./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-parallel-sum-equiv.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4758af9a-abcf-441f-92ab-35b3b15169eb/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4758af9a-abcf-441f-92ab-35b3b15169eb/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4758af9a-abcf-441f-92ab-35b3b15169eb/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4758af9a-abcf-441f-92ab-35b3b15169eb/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-parallel-sum-equiv.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4758af9a-abcf-441f-92ab-35b3b15169eb/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4758af9a-abcf-441f-92ab-35b3b15169eb/bin/uautomizer-verify-qhAvR1uOyd --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 2d41b1dc1d5d7eec1f1fd4e3cbbef0194aa2dded6486a15b383e9bb8fe1468a3 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 14:31:54,760 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 14:31:54,873 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4758af9a-abcf-441f-92ab-35b3b15169eb/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-13 14:31:54,883 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 14:31:54,883 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 14:31:54,935 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 14:31:54,936 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 14:31:54,937 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 14:31:54,937 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 14:31:54,937 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 14:31:54,937 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 14:31:54,938 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 14:31:54,938 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 14:31:54,938 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 14:31:54,938 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 14:31:54,938 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 14:31:54,938 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 14:31:54,939 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 14:31:54,939 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 14:31:54,939 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 14:31:54,939 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 14:31:54,939 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 14:31:54,939 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 14:31:54,939 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 14:31:54,939 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 14:31:54,940 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 14:31:54,940 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 14:31:54,940 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 14:31:54,940 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 14:31:54,940 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 14:31:54,940 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 14:31:54,940 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 14:31:54,941 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 14:31:54,941 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 14:31:54,941 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 14:31:54,941 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 14:31:54,942 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 14:31:54,942 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 14:31:54,942 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 14:31:54,942 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 14:31:54,942 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 14:31:54,942 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 14:31:54,943 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_4758af9a-abcf-441f-92ab-35b3b15169eb/bin/uautomizer-verify-qhAvR1uOyd 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 -> 2d41b1dc1d5d7eec1f1fd4e3cbbef0194aa2dded6486a15b383e9bb8fe1468a3 [2024-11-13 14:31:55,306 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 14:31:55,318 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 14:31:55,321 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 14:31:55,322 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 14:31:55,323 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 14:31:55,325 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4758af9a-abcf-441f-92ab-35b3b15169eb/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/weaver/parallel-parallel-sum-equiv.wvr.c Unable to find full path for "g++" [2024-11-13 14:31:57,610 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 14:31:58,102 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 14:31:58,103 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4758af9a-abcf-441f-92ab-35b3b15169eb/sv-benchmarks/c/weaver/parallel-parallel-sum-equiv.wvr.c [2024-11-13 14:31:58,114 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4758af9a-abcf-441f-92ab-35b3b15169eb/bin/uautomizer-verify-qhAvR1uOyd/data/4fcf92dda/d656e73d4aeb44d0b0f88e3f44d2ac0a/FLAGf083faab2 [2024-11-13 14:31:58,138 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4758af9a-abcf-441f-92ab-35b3b15169eb/bin/uautomizer-verify-qhAvR1uOyd/data/4fcf92dda/d656e73d4aeb44d0b0f88e3f44d2ac0a [2024-11-13 14:31:58,140 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 14:31:58,142 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 14:31:58,144 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 14:31:58,148 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 14:31:58,155 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 14:31:58,156 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:31:58" (1/1) ... [2024-11-13 14:31:58,157 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3760d8f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:31:58, skipping insertion in model container [2024-11-13 14:31:58,157 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:31:58" (1/1) ... [2024-11-13 14:31:58,180 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 14:31:58,425 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_4758af9a-abcf-441f-92ab-35b3b15169eb/sv-benchmarks/c/weaver/parallel-parallel-sum-equiv.wvr.c[3822,3835] [2024-11-13 14:31:58,448 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 14:31:58,463 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 14:31:58,502 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_4758af9a-abcf-441f-92ab-35b3b15169eb/sv-benchmarks/c/weaver/parallel-parallel-sum-equiv.wvr.c[3822,3835] [2024-11-13 14:31:58,508 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 14:31:58,541 INFO L204 MainTranslator]: Completed translation [2024-11-13 14:31:58,541 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:31:58 WrapperNode [2024-11-13 14:31:58,541 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 14:31:58,543 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 14:31:58,543 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 14:31:58,543 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 14:31:58,555 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:31:58" (1/1) ... [2024-11-13 14:31:58,564 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:31:58" (1/1) ... [2024-11-13 14:31:58,612 INFO L138 Inliner]: procedures = 26, calls = 53, calls flagged for inlining = 18, calls inlined = 22, statements flattened = 247 [2024-11-13 14:31:58,612 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 14:31:58,613 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 14:31:58,613 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 14:31:58,613 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 14:31:58,626 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:31:58" (1/1) ... [2024-11-13 14:31:58,627 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:31:58" (1/1) ... [2024-11-13 14:31:58,632 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:31:58" (1/1) ... [2024-11-13 14:31:58,658 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-13 14:31:58,658 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:31:58" (1/1) ... [2024-11-13 14:31:58,659 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:31:58" (1/1) ... [2024-11-13 14:31:58,674 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:31:58" (1/1) ... [2024-11-13 14:31:58,681 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:31:58" (1/1) ... [2024-11-13 14:31:58,684 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:31:58" (1/1) ... [2024-11-13 14:31:58,686 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:31:58" (1/1) ... [2024-11-13 14:31:58,690 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 14:31:58,694 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 14:31:58,694 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 14:31:58,694 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 14:31:58,695 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:31:58" (1/1) ... [2024-11-13 14:31:58,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 14:31:58,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4758af9a-abcf-441f-92ab-35b3b15169eb/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:31:58,729 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4758af9a-abcf-441f-92ab-35b3b15169eb/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 14:31:58,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4758af9a-abcf-441f-92ab-35b3b15169eb/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 14:31:58,772 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 14:31:58,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-13 14:31:58,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-13 14:31:58,773 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-13 14:31:58,773 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-13 14:31:58,774 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-13 14:31:58,774 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-13 14:31:58,774 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-13 14:31:58,774 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-13 14:31:58,774 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-13 14:31:58,774 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-13 14:31:58,774 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-11-13 14:31:58,774 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-11-13 14:31:58,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 14:31:58,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-13 14:31:58,774 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-13 14:31:58,774 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-13 14:31:58,775 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-13 14:31:58,775 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 14:31:58,775 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 14:31:58,777 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-13 14:31:58,918 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 14:31:58,920 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 14:31:59,555 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-13 14:31:59,555 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 14:32:00,034 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 14:32:00,034 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-13 14:32:00,035 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:32:00 BoogieIcfgContainer [2024-11-13 14:32:00,035 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 14:32:00,040 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 14:32:00,040 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 14:32:00,045 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 14:32:00,046 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 02:31:58" (1/3) ... [2024-11-13 14:32:00,046 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e02eb7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:32:00, skipping insertion in model container [2024-11-13 14:32:00,047 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:31:58" (2/3) ... [2024-11-13 14:32:00,047 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e02eb7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:32:00, skipping insertion in model container [2024-11-13 14:32:00,047 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:32:00" (3/3) ... [2024-11-13 14:32:00,050 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-parallel-sum-equiv.wvr.c [2024-11-13 14:32:00,070 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 14:32:00,072 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG parallel-parallel-sum-equiv.wvr.c that has 5 procedures, 48 locations, 1 initial locations, 4 loop locations, and 1 error locations. [2024-11-13 14:32:00,072 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-13 14:32:00,182 INFO L143 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2024-11-13 14:32:00,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 63 places, 59 transitions, 158 flow [2024-11-13 14:32:00,307 INFO L124 PetriNetUnfolderBase]: 9/52 cut-off events. [2024-11-13 14:32:00,310 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-13 14:32:00,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71 conditions, 52 events. 9/52 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 96 event pairs, 0 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 53. Up to 3 conditions per place. [2024-11-13 14:32:00,318 INFO L82 GeneralOperation]: Start removeDead. Operand has 63 places, 59 transitions, 158 flow [2024-11-13 14:32:00,323 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 55 places, 51 transitions, 132 flow [2024-11-13 14:32:00,337 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 14:32:00,361 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;@1a2c5ce3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 14:32:00,362 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-11-13 14:32:00,406 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-13 14:32:00,406 INFO L124 PetriNetUnfolderBase]: 9/50 cut-off events. [2024-11-13 14:32:00,407 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-13 14:32:00,407 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:32:00,410 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:32:00,411 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2024-11-13 14:32:00,418 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:32:00,419 INFO L85 PathProgramCache]: Analyzing trace with hash -1767546111, now seen corresponding path program 1 times [2024-11-13 14:32:00,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:32:00,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771759655] [2024-11-13 14:32:00,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:32:00,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:32:00,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:32:00,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:32:00,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:32:00,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771759655] [2024-11-13 14:32:00,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771759655] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:32:00,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:32:00,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 14:32:00,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576608522] [2024-11-13 14:32:00,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:32:00,766 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-13 14:32:00,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:32:00,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-13 14:32:00,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 14:32:00,806 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 61 [2024-11-13 14:32:00,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 51 transitions, 132 flow. Second operand has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:32:00,810 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:32:00,811 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 61 [2024-11-13 14:32:00,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:32:02,819 INFO L124 PetriNetUnfolderBase]: 8088/10948 cut-off events. [2024-11-13 14:32:02,819 INFO L125 PetriNetUnfolderBase]: For 614/614 co-relation queries the response was YES. [2024-11-13 14:32:02,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22845 conditions, 10948 events. 8088/10948 cut-off events. For 614/614 co-relation queries the response was YES. Maximal size of possible extension queue 387. Compared 51522 event pairs, 6978 based on Foata normal form. 0/9835 useless extension candidates. Maximal degree in co-relation 22783. Up to 10923 conditions per place. [2024-11-13 14:32:02,924 INFO L140 encePairwiseOnDemand]: 58/61 looper letters, 44 selfloop transitions, 0 changer transitions 0/48 dead transitions. [2024-11-13 14:32:02,924 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 48 transitions, 214 flow [2024-11-13 14:32:02,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-13 14:32:02,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-13 14:32:02,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 63 transitions. [2024-11-13 14:32:02,945 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5163934426229508 [2024-11-13 14:32:02,949 INFO L175 Difference]: Start difference. First operand has 55 places, 51 transitions, 132 flow. Second operand 2 states and 63 transitions. [2024-11-13 14:32:02,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 48 transitions, 214 flow [2024-11-13 14:32:02,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 48 transitions, 194 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-11-13 14:32:02,972 INFO L231 Difference]: Finished difference. Result has 48 places, 48 transitions, 106 flow [2024-11-13 14:32:02,977 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=106, PETRI_PLACES=48, PETRI_TRANSITIONS=48} [2024-11-13 14:32:02,981 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, -7 predicate places. [2024-11-13 14:32:02,983 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 48 transitions, 106 flow [2024-11-13 14:32:02,983 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:32:02,984 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:32:02,984 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:32:02,984 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 14:32:02,984 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2024-11-13 14:32:02,985 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:32:02,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1461364641, now seen corresponding path program 1 times [2024-11-13 14:32:02,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:32:02,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594630669] [2024-11-13 14:32:02,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:32:02,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:32:03,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:32:03,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:32:03,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:32:03,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594630669] [2024-11-13 14:32:03,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594630669] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:32:03,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:32:03,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 14:32:03,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874477792] [2024-11-13 14:32:03,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:32:03,386 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 14:32:03,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:32:03,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 14:32:03,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:32:03,387 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 61 [2024-11-13 14:32:03,388 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 48 transitions, 106 flow. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:32:03,389 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:32:03,389 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 61 [2024-11-13 14:32:03,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:32:07,165 INFO L124 PetriNetUnfolderBase]: 19350/26141 cut-off events. [2024-11-13 14:32:07,166 INFO L125 PetriNetUnfolderBase]: For 299/299 co-relation queries the response was YES. [2024-11-13 14:32:07,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52854 conditions, 26141 events. 19350/26141 cut-off events. For 299/299 co-relation queries the response was YES. Maximal size of possible extension queue 871. Compared 141850 event pairs, 6122 based on Foata normal form. 1/23284 useless extension candidates. Maximal degree in co-relation 52851. Up to 11645 conditions per place. [2024-11-13 14:32:07,348 INFO L140 encePairwiseOnDemand]: 55/61 looper letters, 106 selfloop transitions, 7 changer transitions 1/118 dead transitions. [2024-11-13 14:32:07,349 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 118 transitions, 490 flow [2024-11-13 14:32:07,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 14:32:07,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 14:32:07,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 147 transitions. [2024-11-13 14:32:07,354 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6024590163934426 [2024-11-13 14:32:07,354 INFO L175 Difference]: Start difference. First operand has 48 places, 48 transitions, 106 flow. Second operand 4 states and 147 transitions. [2024-11-13 14:32:07,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 118 transitions, 490 flow [2024-11-13 14:32:07,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 118 transitions, 490 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-13 14:32:07,363 INFO L231 Difference]: Finished difference. Result has 53 places, 54 transitions, 151 flow [2024-11-13 14:32:07,364 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=151, PETRI_PLACES=53, PETRI_TRANSITIONS=54} [2024-11-13 14:32:07,366 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, -2 predicate places. [2024-11-13 14:32:07,367 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 54 transitions, 151 flow [2024-11-13 14:32:07,367 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:32:07,367 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:32:07,367 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:32:07,367 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 14:32:07,368 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2024-11-13 14:32:07,370 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:32:07,371 INFO L85 PathProgramCache]: Analyzing trace with hash 603562719, now seen corresponding path program 2 times [2024-11-13 14:32:07,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:32:07,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60937984] [2024-11-13 14:32:07,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:32:07,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:32:07,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:32:07,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:32:07,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:32:07,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60937984] [2024-11-13 14:32:07,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60937984] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:32:07,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:32:07,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 14:32:07,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267340160] [2024-11-13 14:32:07,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:32:07,704 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 14:32:07,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:32:07,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 14:32:07,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:32:07,705 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 61 [2024-11-13 14:32:07,706 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 54 transitions, 151 flow. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:32:07,706 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:32:07,706 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 61 [2024-11-13 14:32:07,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:32:12,051 INFO L124 PetriNetUnfolderBase]: 30683/41318 cut-off events. [2024-11-13 14:32:12,052 INFO L125 PetriNetUnfolderBase]: For 4030/4030 co-relation queries the response was YES. [2024-11-13 14:32:12,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89848 conditions, 41318 events. 30683/41318 cut-off events. For 4030/4030 co-relation queries the response was YES. Maximal size of possible extension queue 1147. Compared 231107 event pairs, 14006 based on Foata normal form. 1/36758 useless extension candidates. Maximal degree in co-relation 89842. Up to 19516 conditions per place. [2024-11-13 14:32:12,251 INFO L140 encePairwiseOnDemand]: 55/61 looper letters, 112 selfloop transitions, 8 changer transitions 1/125 dead transitions. [2024-11-13 14:32:12,251 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 125 transitions, 570 flow [2024-11-13 14:32:12,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 14:32:12,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 14:32:12,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 148 transitions. [2024-11-13 14:32:12,254 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6065573770491803 [2024-11-13 14:32:12,254 INFO L175 Difference]: Start difference. First operand has 53 places, 54 transitions, 151 flow. Second operand 4 states and 148 transitions. [2024-11-13 14:32:12,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 125 transitions, 570 flow [2024-11-13 14:32:12,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 125 transitions, 570 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-13 14:32:12,261 INFO L231 Difference]: Finished difference. Result has 58 places, 59 transitions, 211 flow [2024-11-13 14:32:12,261 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=211, PETRI_PLACES=58, PETRI_TRANSITIONS=59} [2024-11-13 14:32:12,262 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 3 predicate places. [2024-11-13 14:32:12,263 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 59 transitions, 211 flow [2024-11-13 14:32:12,263 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:32:12,263 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:32:12,263 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:32:12,264 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 14:32:12,264 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2024-11-13 14:32:12,265 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:32:12,265 INFO L85 PathProgramCache]: Analyzing trace with hash -2060340894, now seen corresponding path program 1 times [2024-11-13 14:32:12,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:32:12,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246834127] [2024-11-13 14:32:12,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:32:12,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:32:12,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:32:12,653 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:32:12,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:32:12,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246834127] [2024-11-13 14:32:12,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246834127] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:32:12,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:32:12,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 14:32:12,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94386039] [2024-11-13 14:32:12,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:32:12,658 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 14:32:12,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:32:12,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 14:32:12,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:32:12,659 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 61 [2024-11-13 14:32:12,660 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 59 transitions, 211 flow. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:32:12,660 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:32:12,660 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 61 [2024-11-13 14:32:12,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:32:17,459 INFO L124 PetriNetUnfolderBase]: 42068/57206 cut-off events. [2024-11-13 14:32:17,459 INFO L125 PetriNetUnfolderBase]: For 16662/16666 co-relation queries the response was YES. [2024-11-13 14:32:17,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128512 conditions, 57206 events. 42068/57206 cut-off events. For 16662/16666 co-relation queries the response was YES. Maximal size of possible extension queue 1618. Compared 337233 event pairs, 32096 based on Foata normal form. 1244/51696 useless extension candidates. Maximal degree in co-relation 128503. Up to 41253 conditions per place. [2024-11-13 14:32:17,760 INFO L140 encePairwiseOnDemand]: 55/61 looper letters, 102 selfloop transitions, 5 changer transitions 2/113 dead transitions. [2024-11-13 14:32:17,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 113 transitions, 601 flow [2024-11-13 14:32:17,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 14:32:17,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-13 14:32:17,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 136 transitions. [2024-11-13 14:32:17,763 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4459016393442623 [2024-11-13 14:32:17,763 INFO L175 Difference]: Start difference. First operand has 58 places, 59 transitions, 211 flow. Second operand 5 states and 136 transitions. [2024-11-13 14:32:17,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 113 transitions, 601 flow [2024-11-13 14:32:17,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 113 transitions, 597 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-11-13 14:32:17,793 INFO L231 Difference]: Finished difference. Result has 65 places, 63 transitions, 259 flow [2024-11-13 14:32:17,793 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=259, PETRI_PLACES=65, PETRI_TRANSITIONS=63} [2024-11-13 14:32:17,794 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 10 predicate places. [2024-11-13 14:32:17,794 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 63 transitions, 259 flow [2024-11-13 14:32:17,795 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:32:17,795 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:32:17,795 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:32:17,795 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-13 14:32:17,795 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2024-11-13 14:32:17,796 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:32:17,796 INFO L85 PathProgramCache]: Analyzing trace with hash 369829341, now seen corresponding path program 1 times [2024-11-13 14:32:17,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:32:17,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109289282] [2024-11-13 14:32:17,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:32:17,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:32:17,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:32:18,099 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:32:18,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:32:18,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109289282] [2024-11-13 14:32:18,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109289282] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:32:18,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:32:18,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 14:32:18,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069450427] [2024-11-13 14:32:18,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:32:18,101 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 14:32:18,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:32:18,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 14:32:18,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:32:18,102 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 61 [2024-11-13 14:32:18,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 63 transitions, 259 flow. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:32:18,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:32:18,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 61 [2024-11-13 14:32:18,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:32:22,367 INFO L124 PetriNetUnfolderBase]: 37183/50532 cut-off events. [2024-11-13 14:32:22,368 INFO L125 PetriNetUnfolderBase]: For 15405/15405 co-relation queries the response was YES. [2024-11-13 14:32:22,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115709 conditions, 50532 events. 37183/50532 cut-off events. For 15405/15405 co-relation queries the response was YES. Maximal size of possible extension queue 1312. Compared 290927 event pairs, 28958 based on Foata normal form. 382/45021 useless extension candidates. Maximal degree in co-relation 115696. Up to 41253 conditions per place. [2024-11-13 14:32:22,537 INFO L140 encePairwiseOnDemand]: 56/61 looper letters, 54 selfloop transitions, 2 changer transitions 60/120 dead transitions. [2024-11-13 14:32:22,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 120 transitions, 634 flow [2024-11-13 14:32:22,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 14:32:22,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-13 14:32:22,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 145 transitions. [2024-11-13 14:32:22,539 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47540983606557374 [2024-11-13 14:32:22,539 INFO L175 Difference]: Start difference. First operand has 65 places, 63 transitions, 259 flow. Second operand 5 states and 145 transitions. [2024-11-13 14:32:22,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 120 transitions, 634 flow [2024-11-13 14:32:22,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 120 transitions, 630 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-13 14:32:22,579 INFO L231 Difference]: Finished difference. Result has 70 places, 60 transitions, 235 flow [2024-11-13 14:32:22,580 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=235, PETRI_PLACES=70, PETRI_TRANSITIONS=60} [2024-11-13 14:32:22,580 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 15 predicate places. [2024-11-13 14:32:22,580 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 60 transitions, 235 flow [2024-11-13 14:32:22,581 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:32:22,581 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:32:22,581 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:32:22,581 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-13 14:32:22,581 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2024-11-13 14:32:22,582 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:32:22,582 INFO L85 PathProgramCache]: Analyzing trace with hash 835634863, now seen corresponding path program 1 times [2024-11-13 14:32:22,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:32:22,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057263194] [2024-11-13 14:32:22,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:32:22,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:32:22,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:32:22,824 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:32:22,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:32:22,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057263194] [2024-11-13 14:32:22,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057263194] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:32:22,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [641219800] [2024-11-13 14:32:22,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:32:22,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:32:22,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4758af9a-abcf-441f-92ab-35b3b15169eb/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:32:22,831 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4758af9a-abcf-441f-92ab-35b3b15169eb/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:32:22,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4758af9a-abcf-441f-92ab-35b3b15169eb/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 14:32:23,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:32:23,004 INFO L255 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-13 14:32:23,011 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:32:23,170 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:32:23,171 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:32:23,477 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:32:23,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [641219800] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:32:23,478 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:32:23,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-13 14:32:23,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922640507] [2024-11-13 14:32:23,478 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:32:23,479 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-13 14:32:23,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:32:23,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-13 14:32:23,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2024-11-13 14:32:23,480 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 61 [2024-11-13 14:32:23,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 60 transitions, 235 flow. Second operand has 12 states, 12 states have (on average 12.416666666666666) internal successors, (149), 12 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:32:23,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:32:23,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 61 [2024-11-13 14:32:23,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:32:28,698 INFO L124 PetriNetUnfolderBase]: 46892/63464 cut-off events. [2024-11-13 14:32:28,698 INFO L125 PetriNetUnfolderBase]: For 28393/28393 co-relation queries the response was YES. [2024-11-13 14:32:28,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149702 conditions, 63464 events. 46892/63464 cut-off events. For 28393/28393 co-relation queries the response was YES. Maximal size of possible extension queue 1834. Compared 382497 event pairs, 24105 based on Foata normal form. 799/57084 useless extension candidates. Maximal degree in co-relation 149687. Up to 30623 conditions per place. [2024-11-13 14:32:28,946 INFO L140 encePairwiseOnDemand]: 55/61 looper letters, 159 selfloop transitions, 7 changer transitions 1/171 dead transitions. [2024-11-13 14:32:28,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 171 transitions, 955 flow [2024-11-13 14:32:28,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 14:32:28,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-13 14:32:28,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 199 transitions. [2024-11-13 14:32:28,948 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46604215456674475 [2024-11-13 14:32:28,948 INFO L175 Difference]: Start difference. First operand has 70 places, 60 transitions, 235 flow. Second operand 7 states and 199 transitions. [2024-11-13 14:32:28,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 171 transitions, 955 flow [2024-11-13 14:32:29,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 171 transitions, 929 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-11-13 14:32:29,090 INFO L231 Difference]: Finished difference. Result has 71 places, 65 transitions, 284 flow [2024-11-13 14:32:29,090 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=284, PETRI_PLACES=71, PETRI_TRANSITIONS=65} [2024-11-13 14:32:29,091 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 16 predicate places. [2024-11-13 14:32:29,091 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 65 transitions, 284 flow [2024-11-13 14:32:29,091 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.416666666666666) internal successors, (149), 12 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:32:29,091 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:32:29,092 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:32:29,118 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4758af9a-abcf-441f-92ab-35b3b15169eb/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 14:32:29,296 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4758af9a-abcf-441f-92ab-35b3b15169eb/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:32:29,297 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2024-11-13 14:32:29,297 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:32:29,297 INFO L85 PathProgramCache]: Analyzing trace with hash 1353719819, now seen corresponding path program 1 times [2024-11-13 14:32:29,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:32:29,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893989455] [2024-11-13 14:32:29,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:32:29,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:32:29,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:32:29,568 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:32:29,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:32:29,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893989455] [2024-11-13 14:32:29,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893989455] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:32:29,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1375378321] [2024-11-13 14:32:29,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:32:29,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:32:29,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4758af9a-abcf-441f-92ab-35b3b15169eb/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:32:29,571 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4758af9a-abcf-441f-92ab-35b3b15169eb/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:32:29,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4758af9a-abcf-441f-92ab-35b3b15169eb/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 14:32:29,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:32:29,738 INFO L255 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-13 14:32:29,740 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:32:29,858 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:32:29,858 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:32:29,940 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:32:29,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1375378321] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:32:29,940 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:32:29,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-13 14:32:29,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41147552] [2024-11-13 14:32:29,941 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:32:29,941 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-13 14:32:29,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:32:29,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-13 14:32:29,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2024-11-13 14:32:29,942 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 61 [2024-11-13 14:32:29,943 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 65 transitions, 284 flow. Second operand has 12 states, 12 states have (on average 13.583333333333334) internal successors, (163), 12 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:32:29,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:32:29,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 61 [2024-11-13 14:32:29,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:32:34,004 INFO L124 PetriNetUnfolderBase]: 36481/49836 cut-off events. [2024-11-13 14:32:34,004 INFO L125 PetriNetUnfolderBase]: For 23228/23232 co-relation queries the response was YES. [2024-11-13 14:32:34,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118928 conditions, 49836 events. 36481/49836 cut-off events. For 23228/23232 co-relation queries the response was YES. Maximal size of possible extension queue 1391. Compared 291993 event pairs, 17518 based on Foata normal form. 1460/45364 useless extension candidates. Maximal degree in co-relation 118913. Up to 21141 conditions per place. [2024-11-13 14:32:34,184 INFO L140 encePairwiseOnDemand]: 53/61 looper letters, 84 selfloop transitions, 5 changer transitions 47/140 dead transitions. [2024-11-13 14:32:34,184 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 140 transitions, 807 flow [2024-11-13 14:32:34,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 14:32:34,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-13 14:32:34,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 174 transitions. [2024-11-13 14:32:34,186 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40749414519906324 [2024-11-13 14:32:34,186 INFO L175 Difference]: Start difference. First operand has 71 places, 65 transitions, 284 flow. Second operand 7 states and 174 transitions. [2024-11-13 14:32:34,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 140 transitions, 807 flow [2024-11-13 14:32:34,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 140 transitions, 799 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-11-13 14:32:34,206 INFO L231 Difference]: Finished difference. Result has 80 places, 63 transitions, 278 flow [2024-11-13 14:32:34,206 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=278, PETRI_PLACES=80, PETRI_TRANSITIONS=63} [2024-11-13 14:32:34,207 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 25 predicate places. [2024-11-13 14:32:34,207 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 63 transitions, 278 flow [2024-11-13 14:32:34,207 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.583333333333334) internal successors, (163), 12 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:32:34,208 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:32:34,208 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:32:34,224 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4758af9a-abcf-441f-92ab-35b3b15169eb/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-13 14:32:34,410 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4758af9a-abcf-441f-92ab-35b3b15169eb/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-13 14:32:34,411 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2024-11-13 14:32:34,411 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:32:34,411 INFO L85 PathProgramCache]: Analyzing trace with hash 1019135201, now seen corresponding path program 2 times [2024-11-13 14:32:34,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:32:34,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8051824] [2024-11-13 14:32:34,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:32:34,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:32:34,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:32:34,699 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:32:34,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:32:34,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8051824] [2024-11-13 14:32:34,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8051824] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:32:34,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [365811159] [2024-11-13 14:32:34,700 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 14:32:34,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:32:34,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4758af9a-abcf-441f-92ab-35b3b15169eb/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:32:34,706 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4758af9a-abcf-441f-92ab-35b3b15169eb/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:32:34,709 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4758af9a-abcf-441f-92ab-35b3b15169eb/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 14:32:34,858 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 14:32:34,858 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:32:34,862 INFO L255 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-13 14:32:34,864 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:32:35,033 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:32:35,033 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:32:35,158 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:32:35,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [365811159] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:32:35,159 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:32:35,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-13 14:32:35,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955591229] [2024-11-13 14:32:35,159 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:32:35,160 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-13 14:32:35,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:32:35,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-13 14:32:35,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2024-11-13 14:32:35,165 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 61 [2024-11-13 14:32:35,165 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 63 transitions, 278 flow. Second operand has 12 states, 12 states have (on average 14.166666666666666) internal successors, (170), 12 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:32:35,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:32:35,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 61 [2024-11-13 14:32:35,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:32:38,482 INFO L124 PetriNetUnfolderBase]: 23295/31570 cut-off events. [2024-11-13 14:32:38,482 INFO L125 PetriNetUnfolderBase]: For 25161/25165 co-relation queries the response was YES. [2024-11-13 14:32:38,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84389 conditions, 31570 events. 23295/31570 cut-off events. For 25161/25165 co-relation queries the response was YES. Maximal size of possible extension queue 811. Compared 171038 event pairs, 11753 based on Foata normal form. 830/28861 useless extension candidates. Maximal degree in co-relation 84370. Up to 24876 conditions per place. [2024-11-13 14:32:38,608 INFO L140 encePairwiseOnDemand]: 53/61 looper letters, 75 selfloop transitions, 8 changer transitions 0/87 dead transitions. [2024-11-13 14:32:38,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 87 transitions, 534 flow [2024-11-13 14:32:38,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 14:32:38,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-13 14:32:38,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 126 transitions. [2024-11-13 14:32:38,610 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.29508196721311475 [2024-11-13 14:32:38,610 INFO L175 Difference]: Start difference. First operand has 80 places, 63 transitions, 278 flow. Second operand 7 states and 126 transitions. [2024-11-13 14:32:38,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 87 transitions, 534 flow [2024-11-13 14:32:38,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 87 transitions, 488 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-11-13 14:32:38,715 INFO L231 Difference]: Finished difference. Result has 74 places, 65 transitions, 282 flow [2024-11-13 14:32:38,715 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=282, PETRI_PLACES=74, PETRI_TRANSITIONS=65} [2024-11-13 14:32:38,716 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 19 predicate places. [2024-11-13 14:32:38,716 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 65 transitions, 282 flow [2024-11-13 14:32:38,717 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 14.166666666666666) internal successors, (170), 12 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:32:38,717 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:32:38,717 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:32:38,742 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4758af9a-abcf-441f-92ab-35b3b15169eb/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-13 14:32:38,917 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4758af9a-abcf-441f-92ab-35b3b15169eb/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-13 14:32:38,918 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2024-11-13 14:32:38,918 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:32:38,918 INFO L85 PathProgramCache]: Analyzing trace with hash -1370385589, now seen corresponding path program 1 times [2024-11-13 14:32:38,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:32:38,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253228054] [2024-11-13 14:32:38,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:32:38,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:32:38,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:32:39,152 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:32:39,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:32:39,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253228054] [2024-11-13 14:32:39,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253228054] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:32:39,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [490859127] [2024-11-13 14:32:39,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:32:39,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:32:39,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4758af9a-abcf-441f-92ab-35b3b15169eb/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:32:39,156 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4758af9a-abcf-441f-92ab-35b3b15169eb/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:32:39,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4758af9a-abcf-441f-92ab-35b3b15169eb/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 14:32:39,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:32:39,302 INFO L255 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-13 14:32:39,304 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:32:39,433 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:32:39,436 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:32:39,556 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:32:39,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [490859127] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-13 14:32:39,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-13 14:32:39,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 11 [2024-11-13 14:32:39,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234184167] [2024-11-13 14:32:39,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:32:39,557 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 14:32:39,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:32:39,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 14:32:39,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2024-11-13 14:32:39,558 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 61 [2024-11-13 14:32:39,560 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 65 transitions, 282 flow. Second operand has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:32:39,561 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:32:39,561 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 61 [2024-11-13 14:32:39,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:32:41,664 INFO L124 PetriNetUnfolderBase]: 19893/26924 cut-off events. [2024-11-13 14:32:41,665 INFO L125 PetriNetUnfolderBase]: For 18095/18095 co-relation queries the response was YES. [2024-11-13 14:32:41,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69921 conditions, 26924 events. 19893/26924 cut-off events. For 18095/18095 co-relation queries the response was YES. Maximal size of possible extension queue 662. Compared 141833 event pairs, 11581 based on Foata normal form. 589/24360 useless extension candidates. Maximal degree in co-relation 69906. Up to 17846 conditions per place. [2024-11-13 14:32:42,099 INFO L140 encePairwiseOnDemand]: 56/61 looper letters, 94 selfloop transitions, 6 changer transitions 1/105 dead transitions. [2024-11-13 14:32:42,099 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 105 transitions, 639 flow [2024-11-13 14:32:42,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 14:32:42,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-13 14:32:42,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 127 transitions. [2024-11-13 14:32:42,101 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3469945355191257 [2024-11-13 14:32:42,101 INFO L175 Difference]: Start difference. First operand has 74 places, 65 transitions, 282 flow. Second operand 6 states and 127 transitions. [2024-11-13 14:32:42,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 105 transitions, 639 flow [2024-11-13 14:32:42,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 105 transitions, 616 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-11-13 14:32:42,131 INFO L231 Difference]: Finished difference. Result has 76 places, 66 transitions, 287 flow [2024-11-13 14:32:42,131 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=287, PETRI_PLACES=76, PETRI_TRANSITIONS=66} [2024-11-13 14:32:42,131 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 21 predicate places. [2024-11-13 14:32:42,132 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 66 transitions, 287 flow [2024-11-13 14:32:42,132 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:32:42,132 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:32:42,132 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:32:42,148 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4758af9a-abcf-441f-92ab-35b3b15169eb/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-13 14:32:42,332 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4758af9a-abcf-441f-92ab-35b3b15169eb/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-13 14:32:42,333 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2024-11-13 14:32:42,333 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:32:42,333 INFO L85 PathProgramCache]: Analyzing trace with hash -1592802283, now seen corresponding path program 1 times [2024-11-13 14:32:42,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:32:42,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756100690] [2024-11-13 14:32:42,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:32:42,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:32:42,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:32:43,620 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:32:43,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:32:43,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756100690] [2024-11-13 14:32:43,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756100690] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:32:43,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1209031850] [2024-11-13 14:32:43,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:32:43,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:32:43,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4758af9a-abcf-441f-92ab-35b3b15169eb/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:32:43,623 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4758af9a-abcf-441f-92ab-35b3b15169eb/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:32:43,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4758af9a-abcf-441f-92ab-35b3b15169eb/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 14:32:43,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:32:43,782 INFO L255 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-13 14:32:43,785 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:32:43,952 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2024-11-13 14:32:44,005 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-13 14:32:44,005 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:32:44,151 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:32:44,151 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 14 [2024-11-13 14:32:44,232 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-13 14:32:44,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1209031850] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:32:44,232 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:32:44,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 13 [2024-11-13 14:32:44,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090989526] [2024-11-13 14:32:44,233 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:32:44,233 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-13 14:32:44,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:32:44,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-13 14:32:44,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-11-13 14:32:44,235 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 61 [2024-11-13 14:32:44,235 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 66 transitions, 287 flow. Second operand has 13 states, 13 states have (on average 12.153846153846153) internal successors, (158), 13 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:32:44,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:32:44,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 61 [2024-11-13 14:32:44,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:32:50,647 INFO L124 PetriNetUnfolderBase]: 38600/52225 cut-off events. [2024-11-13 14:32:50,648 INFO L125 PetriNetUnfolderBase]: For 35692/35696 co-relation queries the response was YES. [2024-11-13 14:32:50,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135718 conditions, 52225 events. 38600/52225 cut-off events. For 35692/35696 co-relation queries the response was YES. Maximal size of possible extension queue 1245. Compared 297007 event pairs, 8521 based on Foata normal form. 3/45986 useless extension candidates. Maximal degree in co-relation 135702. Up to 20797 conditions per place. [2024-11-13 14:32:50,844 INFO L140 encePairwiseOnDemand]: 50/61 looper letters, 255 selfloop transitions, 34 changer transitions 5/298 dead transitions. [2024-11-13 14:32:50,844 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 298 transitions, 1671 flow [2024-11-13 14:32:50,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-13 14:32:50,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-13 14:32:50,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 369 transitions. [2024-11-13 14:32:50,847 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46532156368221944 [2024-11-13 14:32:50,847 INFO L175 Difference]: Start difference. First operand has 76 places, 66 transitions, 287 flow. Second operand 13 states and 369 transitions. [2024-11-13 14:32:50,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 298 transitions, 1671 flow [2024-11-13 14:32:50,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 298 transitions, 1652 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-13 14:32:50,914 INFO L231 Difference]: Finished difference. Result has 89 places, 93 transitions, 567 flow [2024-11-13 14:32:50,915 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=567, PETRI_PLACES=89, PETRI_TRANSITIONS=93} [2024-11-13 14:32:50,915 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 34 predicate places. [2024-11-13 14:32:50,915 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 93 transitions, 567 flow [2024-11-13 14:32:50,916 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 12.153846153846153) internal successors, (158), 13 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:32:50,916 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:32:50,916 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:32:50,932 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4758af9a-abcf-441f-92ab-35b3b15169eb/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-13 14:32:51,118 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4758af9a-abcf-441f-92ab-35b3b15169eb/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-13 14:32:51,118 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2024-11-13 14:32:51,119 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:32:51,119 INFO L85 PathProgramCache]: Analyzing trace with hash -328054225, now seen corresponding path program 1 times [2024-11-13 14:32:51,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:32:51,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797496709] [2024-11-13 14:32:51,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:32:51,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:32:51,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:32:51,977 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:32:51,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:32:51,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797496709] [2024-11-13 14:32:51,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797496709] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:32:51,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [490524052] [2024-11-13 14:32:51,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:32:51,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:32:51,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4758af9a-abcf-441f-92ab-35b3b15169eb/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:32:51,980 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4758af9a-abcf-441f-92ab-35b3b15169eb/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:32:51,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4758af9a-abcf-441f-92ab-35b3b15169eb/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-13 14:32:52,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:32:52,137 INFO L255 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-13 14:32:52,145 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:32:52,636 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2024-11-13 14:32:52,672 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-13 14:32:52,673 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:32:52,816 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:32:52,816 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 14 [2024-11-13 14:32:52,873 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-13 14:32:52,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [490524052] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:32:52,874 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:32:52,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 19 [2024-11-13 14:32:52,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351420269] [2024-11-13 14:32:52,874 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:32:52,875 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-13 14:32:52,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:32:52,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-13 14:32:52,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2024-11-13 14:32:52,876 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 61 [2024-11-13 14:32:52,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 93 transitions, 567 flow. Second operand has 19 states, 19 states have (on average 11.947368421052632) internal successors, (227), 19 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:32:52,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:32:52,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 61 [2024-11-13 14:32:52,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:33:01,559 INFO L124 PetriNetUnfolderBase]: 55290/74666 cut-off events. [2024-11-13 14:33:01,559 INFO L125 PetriNetUnfolderBase]: For 75230/75236 co-relation queries the response was YES. [2024-11-13 14:33:01,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 206386 conditions, 74666 events. 55290/74666 cut-off events. For 75230/75236 co-relation queries the response was YES. Maximal size of possible extension queue 1806. Compared 443135 event pairs, 18606 based on Foata normal form. 5/65593 useless extension candidates. Maximal degree in co-relation 206365. Up to 45218 conditions per place. [2024-11-13 14:33:01,881 INFO L140 encePairwiseOnDemand]: 49/61 looper letters, 349 selfloop transitions, 59 changer transitions 7/419 dead transitions. [2024-11-13 14:33:01,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 419 transitions, 2570 flow [2024-11-13 14:33:01,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-13 14:33:01,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-13 14:33:01,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 532 transitions. [2024-11-13 14:33:01,884 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41530054644808745 [2024-11-13 14:33:01,885 INFO L175 Difference]: Start difference. First operand has 89 places, 93 transitions, 567 flow. Second operand 21 states and 532 transitions. [2024-11-13 14:33:01,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 419 transitions, 2570 flow [2024-11-13 14:33:02,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 419 transitions, 2538 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-11-13 14:33:02,206 INFO L231 Difference]: Finished difference. Result has 114 places, 133 transitions, 1031 flow [2024-11-13 14:33:02,206 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=535, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1031, PETRI_PLACES=114, PETRI_TRANSITIONS=133} [2024-11-13 14:33:02,207 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 59 predicate places. [2024-11-13 14:33:02,207 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 133 transitions, 1031 flow [2024-11-13 14:33:02,207 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 11.947368421052632) internal successors, (227), 19 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:33:02,208 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:33:02,208 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:33:02,232 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4758af9a-abcf-441f-92ab-35b3b15169eb/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-13 14:33:02,408 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4758af9a-abcf-441f-92ab-35b3b15169eb/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-13 14:33:02,408 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2024-11-13 14:33:02,409 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:33:02,409 INFO L85 PathProgramCache]: Analyzing trace with hash 1706054265, now seen corresponding path program 2 times [2024-11-13 14:33:02,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:33:02,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571195272] [2024-11-13 14:33:02,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:33:02,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:33:02,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:33:03,737 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:33:03,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:33:03,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571195272] [2024-11-13 14:33:03,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571195272] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:33:03,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1459478653] [2024-11-13 14:33:03,738 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 14:33:03,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:33:03,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4758af9a-abcf-441f-92ab-35b3b15169eb/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:33:03,740 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4758af9a-abcf-441f-92ab-35b3b15169eb/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:33:03,744 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4758af9a-abcf-441f-92ab-35b3b15169eb/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-13 14:33:03,890 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 14:33:03,890 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:33:03,897 INFO L255 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-13 14:33:03,901 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:33:04,645 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:33:04,647 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 15 [2024-11-13 14:33:04,930 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:33:04,930 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:33:05,612 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:33:05,613 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 14 [2024-11-13 14:33:05,937 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:33:05,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1459478653] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:33:05,937 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:33:05,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 12] total 29 [2024-11-13 14:33:05,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70530114] [2024-11-13 14:33:05,938 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:33:05,938 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-13 14:33:05,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:33:05,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-13 14:33:05,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=704, Unknown=0, NotChecked=0, Total=812 [2024-11-13 14:33:05,940 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 61 [2024-11-13 14:33:05,941 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 133 transitions, 1031 flow. Second operand has 29 states, 29 states have (on average 11.758620689655173) internal successors, (341), 29 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:33:05,941 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:33:05,941 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 61 [2024-11-13 14:33:05,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand