./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-more-multiply-verify.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-more-multiply-verify.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 d79cb5dae664e13779624ff0ffbc531b419f89e2c7510a92e890992a52ee7c98 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 13:51:29,774 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 13:51:29,844 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 13:51:29,854 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 13:51:29,854 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 13:51:29,874 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 13:51:29,875 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 13:51:29,875 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 13:51:29,876 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 13:51:29,877 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 13:51:29,877 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 13:51:29,878 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 13:51:29,878 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 13:51:29,880 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 13:51:29,880 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 13:51:29,880 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 13:51:29,880 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 13:51:29,881 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 13:51:29,881 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 13:51:29,881 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 13:51:29,881 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 13:51:29,882 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 13:51:29,884 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 13:51:29,884 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 13:51:29,884 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 13:51:29,884 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 13:51:29,885 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 13:51:29,885 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 13:51:29,885 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 13:51:29,885 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 13:51:29,885 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 13:51:29,885 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 13:51:29,886 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 13:51:29,886 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 13:51:29,886 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 13:51:29,886 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 13:51:29,886 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 13:51:29,886 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 13:51:29,886 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 13:51:29,886 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 13:51:29,887 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 13:51:29,887 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 13:51:29,887 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d79cb5dae664e13779624ff0ffbc531b419f89e2c7510a92e890992a52ee7c98 [2024-11-22 13:51:30,071 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 13:51:30,090 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 13:51:30,092 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 13:51:30,093 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 13:51:30,093 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 13:51:30,094 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more-multiply-verify.wvr.c [2024-11-22 13:51:31,366 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 13:51:31,504 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 13:51:31,504 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-multiply-verify.wvr.c [2024-11-22 13:51:31,510 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d56c0f9a4/42f7894da7454e28b04ec2b171680154/FLAG1191be498 [2024-11-22 13:51:31,520 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d56c0f9a4/42f7894da7454e28b04ec2b171680154 [2024-11-22 13:51:31,522 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 13:51:31,523 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 13:51:31,524 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 13:51:31,524 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 13:51:31,531 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 13:51:31,532 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:51:31" (1/1) ... [2024-11-22 13:51:31,532 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61b1b7b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:51:31, skipping insertion in model container [2024-11-22 13:51:31,532 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:51:31" (1/1) ... [2024-11-22 13:51:31,551 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 13:51:31,718 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-multiply-verify.wvr.c[3081,3094] [2024-11-22 13:51:31,729 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 13:51:31,739 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 13:51:31,759 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-multiply-verify.wvr.c[3081,3094] [2024-11-22 13:51:31,761 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 13:51:31,779 INFO L204 MainTranslator]: Completed translation [2024-11-22 13:51:31,779 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:51:31 WrapperNode [2024-11-22 13:51:31,780 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 13:51:31,780 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 13:51:31,781 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 13:51:31,781 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 13:51:31,786 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:51:31" (1/1) ... [2024-11-22 13:51:31,798 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:51:31" (1/1) ... [2024-11-22 13:51:31,815 INFO L138 Inliner]: procedures = 25, calls = 35, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 171 [2024-11-22 13:51:31,816 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 13:51:31,816 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 13:51:31,816 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 13:51:31,816 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 13:51:31,829 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:51:31" (1/1) ... [2024-11-22 13:51:31,830 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:51:31" (1/1) ... [2024-11-22 13:51:31,832 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:51:31" (1/1) ... [2024-11-22 13:51:31,847 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 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]. [2024-11-22 13:51:31,847 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:51:31" (1/1) ... [2024-11-22 13:51:31,847 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:51:31" (1/1) ... [2024-11-22 13:51:31,855 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:51:31" (1/1) ... [2024-11-22 13:51:31,857 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:51:31" (1/1) ... [2024-11-22 13:51:31,859 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:51:31" (1/1) ... [2024-11-22 13:51:31,860 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:51:31" (1/1) ... [2024-11-22 13:51:31,862 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 13:51:31,862 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 13:51:31,862 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 13:51:31,862 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 13:51:31,865 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:51:31" (1/1) ... [2024-11-22 13:51:31,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 13:51:31,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:51:31,892 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-22 13:51:31,895 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-22 13:51:31,934 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 13:51:31,935 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-22 13:51:31,935 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-22 13:51:31,935 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-22 13:51:31,935 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-22 13:51:31,935 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-22 13:51:31,935 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-22 13:51:31,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 13:51:31,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-22 13:51:31,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-22 13:51:31,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-22 13:51:31,937 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-22 13:51:31,937 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-22 13:51:31,937 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-22 13:51:31,937 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 13:51:31,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 13:51:31,938 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-22 13:51:31,938 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-22 13:51:31,940 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-22 13:51:32,039 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 13:51:32,041 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 13:51:32,288 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-22 13:51:32,288 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 13:51:32,521 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 13:51:32,524 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-22 13:51:32,525 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:51:32 BoogieIcfgContainer [2024-11-22 13:51:32,525 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 13:51:32,527 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 13:51:32,527 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 13:51:32,529 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 13:51:32,530 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:51:31" (1/3) ... [2024-11-22 13:51:32,530 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30617420 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:51:32, skipping insertion in model container [2024-11-22 13:51:32,530 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:51:31" (2/3) ... [2024-11-22 13:51:32,531 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30617420 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:51:32, skipping insertion in model container [2024-11-22 13:51:32,531 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:51:32" (3/3) ... [2024-11-22 13:51:32,533 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-multiply-verify.wvr.c [2024-11-22 13:51:32,546 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 13:51:32,547 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-22 13:51:32,547 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-22 13:51:32,606 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-22 13:51:32,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 42 places, 35 transitions, 91 flow [2024-11-22 13:51:32,663 INFO L124 PetriNetUnfolderBase]: 3/32 cut-off events. [2024-11-22 13:51:32,663 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-22 13:51:32,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 32 events. 3/32 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 55 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 26. Up to 2 conditions per place. [2024-11-22 13:51:32,667 INFO L82 GeneralOperation]: Start removeDead. Operand has 42 places, 35 transitions, 91 flow [2024-11-22 13:51:32,669 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 38 places, 31 transitions, 80 flow [2024-11-22 13:51:32,676 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 13:51:32,682 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;@560e187c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 13:51:32,683 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-22 13:51:32,695 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-22 13:51:32,695 INFO L124 PetriNetUnfolderBase]: 3/30 cut-off events. [2024-11-22 13:51:32,695 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-22 13:51:32,696 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:51:32,697 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] [2024-11-22 13:51:32,697 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 13:51:32,701 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:51:32,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1962402328, now seen corresponding path program 1 times [2024-11-22 13:51:32,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:51:32,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421619284] [2024-11-22 13:51:32,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:51:32,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:51:32,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:51:33,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:51:33,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:51:33,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421619284] [2024-11-22 13:51:33,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421619284] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:51:33,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:51:33,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 13:51:33,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037872575] [2024-11-22 13:51:33,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:51:33,040 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 13:51:33,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:51:33,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 13:51:33,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 13:51:33,064 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 35 [2024-11-22 13:51:33,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 31 transitions, 80 flow. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:51:33,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:51:33,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 35 [2024-11-22 13:51:33,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:51:33,200 INFO L124 PetriNetUnfolderBase]: 350/569 cut-off events. [2024-11-22 13:51:33,201 INFO L125 PetriNetUnfolderBase]: For 71/71 co-relation queries the response was YES. [2024-11-22 13:51:33,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1201 conditions, 569 events. 350/569 cut-off events. For 71/71 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2010 event pairs, 118 based on Foata normal form. 15/571 useless extension candidates. Maximal degree in co-relation 1072. Up to 432 conditions per place. [2024-11-22 13:51:33,206 INFO L140 encePairwiseOnDemand]: 31/35 looper letters, 35 selfloop transitions, 3 changer transitions 0/44 dead transitions. [2024-11-22 13:51:33,206 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 44 transitions, 188 flow [2024-11-22 13:51:33,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 13:51:33,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 13:51:33,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 66 transitions. [2024-11-22 13:51:33,214 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6285714285714286 [2024-11-22 13:51:33,215 INFO L175 Difference]: Start difference. First operand has 38 places, 31 transitions, 80 flow. Second operand 3 states and 66 transitions. [2024-11-22 13:51:33,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 44 transitions, 188 flow [2024-11-22 13:51:33,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 44 transitions, 172 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-22 13:51:33,220 INFO L231 Difference]: Finished difference. Result has 35 places, 33 transitions, 87 flow [2024-11-22 13:51:33,221 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=87, PETRI_PLACES=35, PETRI_TRANSITIONS=33} [2024-11-22 13:51:33,224 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, -3 predicate places. [2024-11-22 13:51:33,224 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 33 transitions, 87 flow [2024-11-22 13:51:33,224 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:51:33,224 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:51:33,224 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] [2024-11-22 13:51:33,224 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-22 13:51:33,225 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 13:51:33,225 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:51:33,225 INFO L85 PathProgramCache]: Analyzing trace with hash -1662219836, now seen corresponding path program 2 times [2024-11-22 13:51:33,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:51:33,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112844089] [2024-11-22 13:51:33,225 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:51:33,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:51:33,257 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-22 13:51:33,258 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:51:33,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:51:33,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:51:33,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112844089] [2024-11-22 13:51:33,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112844089] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:51:33,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:51:33,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 13:51:33,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892356143] [2024-11-22 13:51:33,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:51:33,417 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 13:51:33,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:51:33,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 13:51:33,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 13:51:33,419 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 35 [2024-11-22 13:51:33,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 33 transitions, 87 flow. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:51:33,420 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:51:33,420 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 35 [2024-11-22 13:51:33,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:51:33,584 INFO L124 PetriNetUnfolderBase]: 420/707 cut-off events. [2024-11-22 13:51:33,585 INFO L125 PetriNetUnfolderBase]: For 89/89 co-relation queries the response was YES. [2024-11-22 13:51:33,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1541 conditions, 707 events. 420/707 cut-off events. For 89/89 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2726 event pairs, 316 based on Foata normal form. 26/710 useless extension candidates. Maximal degree in co-relation 526. Up to 547 conditions per place. [2024-11-22 13:51:33,592 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 26 selfloop transitions, 2 changer transitions 13/47 dead transitions. [2024-11-22 13:51:33,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 47 transitions, 200 flow [2024-11-22 13:51:33,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 13:51:33,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-22 13:51:33,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 77 transitions. [2024-11-22 13:51:33,596 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.55 [2024-11-22 13:51:33,596 INFO L175 Difference]: Start difference. First operand has 35 places, 33 transitions, 87 flow. Second operand 4 states and 77 transitions. [2024-11-22 13:51:33,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 47 transitions, 200 flow [2024-11-22 13:51:33,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 47 transitions, 197 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-22 13:51:33,597 INFO L231 Difference]: Finished difference. Result has 39 places, 34 transitions, 100 flow [2024-11-22 13:51:33,597 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=100, PETRI_PLACES=39, PETRI_TRANSITIONS=34} [2024-11-22 13:51:33,598 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 1 predicate places. [2024-11-22 13:51:33,599 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 34 transitions, 100 flow [2024-11-22 13:51:33,599 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:51:33,599 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:51:33,599 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] [2024-11-22 13:51:33,599 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 13:51:33,600 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 13:51:33,600 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:51:33,600 INFO L85 PathProgramCache]: Analyzing trace with hash -388477036, now seen corresponding path program 1 times [2024-11-22 13:51:33,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:51:33,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173790975] [2024-11-22 13:51:33,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:51:33,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:51:33,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:51:33,693 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 13:51:33,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:51:33,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173790975] [2024-11-22 13:51:33,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173790975] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:51:33,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:51:33,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 13:51:33,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402600670] [2024-11-22 13:51:33,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:51:33,695 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 13:51:33,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:51:33,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 13:51:33,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-22 13:51:33,695 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 35 [2024-11-22 13:51:33,696 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 34 transitions, 100 flow. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:51:33,696 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:51:33,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 35 [2024-11-22 13:51:33,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:51:33,792 INFO L124 PetriNetUnfolderBase]: 224/390 cut-off events. [2024-11-22 13:51:33,792 INFO L125 PetriNetUnfolderBase]: For 94/97 co-relation queries the response was YES. [2024-11-22 13:51:33,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 880 conditions, 390 events. 224/390 cut-off events. For 94/97 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1296 event pairs, 56 based on Foata normal form. 29/406 useless extension candidates. Maximal degree in co-relation 866. Up to 146 conditions per place. [2024-11-22 13:51:33,798 INFO L140 encePairwiseOnDemand]: 31/35 looper letters, 40 selfloop transitions, 5 changer transitions 0/51 dead transitions. [2024-11-22 13:51:33,798 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 51 transitions, 228 flow [2024-11-22 13:51:33,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 13:51:33,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-22 13:51:33,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 81 transitions. [2024-11-22 13:51:33,799 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5785714285714286 [2024-11-22 13:51:33,799 INFO L175 Difference]: Start difference. First operand has 39 places, 34 transitions, 100 flow. Second operand 4 states and 81 transitions. [2024-11-22 13:51:33,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 51 transitions, 228 flow [2024-11-22 13:51:33,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 51 transitions, 220 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-22 13:51:33,801 INFO L231 Difference]: Finished difference. Result has 40 places, 34 transitions, 108 flow [2024-11-22 13:51:33,801 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=108, PETRI_PLACES=40, PETRI_TRANSITIONS=34} [2024-11-22 13:51:33,801 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 2 predicate places. [2024-11-22 13:51:33,802 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 34 transitions, 108 flow [2024-11-22 13:51:33,802 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:51:33,802 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:51:33,802 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] [2024-11-22 13:51:33,802 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 13:51:33,804 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 13:51:33,805 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:51:33,805 INFO L85 PathProgramCache]: Analyzing trace with hash -2031575406, now seen corresponding path program 2 times [2024-11-22 13:51:33,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:51:33,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177617124] [2024-11-22 13:51:33,805 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:51:33,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:51:33,864 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-22 13:51:33,864 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:51:34,254 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 13:51:34,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:51:34,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177617124] [2024-11-22 13:51:34,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177617124] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:51:34,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:51:34,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-22 13:51:34,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197114287] [2024-11-22 13:51:34,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:51:34,257 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-22 13:51:34,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:51:34,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-22 13:51:34,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-22 13:51:34,268 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35 [2024-11-22 13:51:34,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 34 transitions, 108 flow. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:51:34,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:51:34,268 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35 [2024-11-22 13:51:34,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:51:34,584 INFO L124 PetriNetUnfolderBase]: 548/921 cut-off events. [2024-11-22 13:51:34,586 INFO L125 PetriNetUnfolderBase]: For 427/427 co-relation queries the response was YES. [2024-11-22 13:51:34,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2175 conditions, 921 events. 548/921 cut-off events. For 427/427 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 4129 event pairs, 123 based on Foata normal form. 1/919 useless extension candidates. Maximal degree in co-relation 2156. Up to 341 conditions per place. [2024-11-22 13:51:34,590 INFO L140 encePairwiseOnDemand]: 26/35 looper letters, 62 selfloop transitions, 14 changer transitions 17/97 dead transitions. [2024-11-22 13:51:34,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 97 transitions, 467 flow [2024-11-22 13:51:34,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 13:51:34,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-22 13:51:34,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 149 transitions. [2024-11-22 13:51:34,592 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5321428571428571 [2024-11-22 13:51:34,592 INFO L175 Difference]: Start difference. First operand has 40 places, 34 transitions, 108 flow. Second operand 8 states and 149 transitions. [2024-11-22 13:51:34,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 97 transitions, 467 flow [2024-11-22 13:51:34,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 97 transitions, 447 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-11-22 13:51:34,595 INFO L231 Difference]: Finished difference. Result has 51 places, 45 transitions, 207 flow [2024-11-22 13:51:34,596 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=207, PETRI_PLACES=51, PETRI_TRANSITIONS=45} [2024-11-22 13:51:34,596 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 13 predicate places. [2024-11-22 13:51:34,596 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 45 transitions, 207 flow [2024-11-22 13:51:34,597 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:51:34,597 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:51:34,597 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] [2024-11-22 13:51:34,597 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 13:51:34,597 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 13:51:34,598 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:51:34,598 INFO L85 PathProgramCache]: Analyzing trace with hash 476846050, now seen corresponding path program 3 times [2024-11-22 13:51:34,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:51:34,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727008935] [2024-11-22 13:51:34,598 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 13:51:34,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:51:34,641 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-22 13:51:34,642 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:51:35,012 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 13:51:35,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:51:35,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727008935] [2024-11-22 13:51:35,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727008935] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:51:35,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:51:35,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-22 13:51:35,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998508454] [2024-11-22 13:51:35,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:51:35,014 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-22 13:51:35,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:51:35,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-22 13:51:35,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-22 13:51:35,022 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35 [2024-11-22 13:51:35,022 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 45 transitions, 207 flow. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:51:35,022 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:51:35,022 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35 [2024-11-22 13:51:35,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:51:35,308 INFO L124 PetriNetUnfolderBase]: 742/1250 cut-off events. [2024-11-22 13:51:35,309 INFO L125 PetriNetUnfolderBase]: For 1221/1226 co-relation queries the response was YES. [2024-11-22 13:51:35,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3594 conditions, 1250 events. 742/1250 cut-off events. For 1221/1226 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 6072 event pairs, 185 based on Foata normal form. 6/1254 useless extension candidates. Maximal degree in co-relation 3578. Up to 405 conditions per place. [2024-11-22 13:51:35,316 INFO L140 encePairwiseOnDemand]: 26/35 looper letters, 64 selfloop transitions, 21 changer transitions 17/106 dead transitions. [2024-11-22 13:51:35,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 106 transitions, 627 flow [2024-11-22 13:51:35,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 13:51:35,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-22 13:51:35,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 148 transitions. [2024-11-22 13:51:35,320 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5285714285714286 [2024-11-22 13:51:35,320 INFO L175 Difference]: Start difference. First operand has 51 places, 45 transitions, 207 flow. Second operand 8 states and 148 transitions. [2024-11-22 13:51:35,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 106 transitions, 627 flow [2024-11-22 13:51:35,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 106 transitions, 599 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-11-22 13:51:35,327 INFO L231 Difference]: Finished difference. Result has 58 places, 57 transitions, 355 flow [2024-11-22 13:51:35,327 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=355, PETRI_PLACES=58, PETRI_TRANSITIONS=57} [2024-11-22 13:51:35,329 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 20 predicate places. [2024-11-22 13:51:35,330 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 57 transitions, 355 flow [2024-11-22 13:51:35,330 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:51:35,330 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:51:35,330 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] [2024-11-22 13:51:35,330 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-22 13:51:35,330 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 13:51:35,331 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:51:35,331 INFO L85 PathProgramCache]: Analyzing trace with hash 1801737580, now seen corresponding path program 4 times [2024-11-22 13:51:35,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:51:35,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076655159] [2024-11-22 13:51:35,331 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 13:51:35,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:51:35,347 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 13:51:35,347 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:51:35,504 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:51:35,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:51:35,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076655159] [2024-11-22 13:51:35,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076655159] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:51:35,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1871037826] [2024-11-22 13:51:35,504 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 13:51:35,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:51:35,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:51:35,508 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 13:51:35,509 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 13:51:35,590 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 13:51:35,590 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:51:35,593 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-22 13:51:35,596 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:51:35,678 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:51:35,678 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:51:35,754 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:51:35,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1871037826] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:51:35,754 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:51:35,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-11-22 13:51:35,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807758653] [2024-11-22 13:51:35,755 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:51:35,755 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 13:51:35,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:51:35,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 13:51:35,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-11-22 13:51:35,757 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 35 [2024-11-22 13:51:35,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 57 transitions, 355 flow. Second operand has 10 states, 10 states have (on average 13.5) internal successors, (135), 10 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:51:35,759 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:51:35,759 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 35 [2024-11-22 13:51:35,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:51:35,972 INFO L124 PetriNetUnfolderBase]: 1155/1999 cut-off events. [2024-11-22 13:51:35,972 INFO L125 PetriNetUnfolderBase]: For 2921/2923 co-relation queries the response was YES. [2024-11-22 13:51:35,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6242 conditions, 1999 events. 1155/1999 cut-off events. For 2921/2923 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 11370 event pairs, 786 based on Foata normal form. 11/1971 useless extension candidates. Maximal degree in co-relation 6222. Up to 892 conditions per place. [2024-11-22 13:51:35,983 INFO L140 encePairwiseOnDemand]: 31/35 looper letters, 40 selfloop transitions, 3 changer transitions 35/93 dead transitions. [2024-11-22 13:51:35,983 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 93 transitions, 740 flow [2024-11-22 13:51:35,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 13:51:35,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 13:51:35,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 92 transitions. [2024-11-22 13:51:35,984 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5257142857142857 [2024-11-22 13:51:35,984 INFO L175 Difference]: Start difference. First operand has 58 places, 57 transitions, 355 flow. Second operand 5 states and 92 transitions. [2024-11-22 13:51:35,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 93 transitions, 740 flow [2024-11-22 13:51:35,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 93 transitions, 728 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-11-22 13:51:35,995 INFO L231 Difference]: Finished difference. Result has 60 places, 58 transitions, 361 flow [2024-11-22 13:51:35,995 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=343, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=361, PETRI_PLACES=60, PETRI_TRANSITIONS=58} [2024-11-22 13:51:35,996 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 22 predicate places. [2024-11-22 13:51:35,996 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 58 transitions, 361 flow [2024-11-22 13:51:35,996 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.5) internal successors, (135), 10 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:51:35,996 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:51:35,996 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] [2024-11-22 13:51:36,004 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-22 13:51:36,197 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-22 13:51:36,198 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 13:51:36,198 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:51:36,198 INFO L85 PathProgramCache]: Analyzing trace with hash -280693390, now seen corresponding path program 5 times [2024-11-22 13:51:36,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:51:36,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565874809] [2024-11-22 13:51:36,198 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 13:51:36,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:51:36,232 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:51:36,232 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:51:37,263 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:51:37,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:51:37,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565874809] [2024-11-22 13:51:37,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565874809] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:51:37,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [66190247] [2024-11-22 13:51:37,264 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 13:51:37,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:51:37,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:51:37,266 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 13:51:37,267 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-22 13:51:37,344 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:51:37,345 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:51:37,346 INFO L255 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-22 13:51:37,349 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:51:37,430 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-22 13:51:37,945 INFO L349 Elim1Store]: treesize reduction 34, result has 17.1 percent of original size [2024-11-22 13:51:37,946 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 71 treesize of output 41 [2024-11-22 13:51:37,981 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:51:37,981 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:51:38,894 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 81 treesize of output 73 [2024-11-22 13:51:38,940 INFO L349 Elim1Store]: treesize reduction 8, result has 82.2 percent of original size [2024-11-22 13:51:38,941 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 140 treesize of output 138 [2024-11-22 13:51:40,223 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:51:40,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [66190247] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:51:40,223 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:51:40,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 31 [2024-11-22 13:51:40,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637475239] [2024-11-22 13:51:40,224 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:51:40,225 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-22 13:51:40,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:51:40,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-22 13:51:40,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=842, Unknown=0, NotChecked=0, Total=992 [2024-11-22 13:51:40,264 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35 [2024-11-22 13:51:40,265 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 58 transitions, 361 flow. Second operand has 32 states, 32 states have (on average 9.25) internal successors, (296), 32 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:51:40,265 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:51:40,265 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35 [2024-11-22 13:51:40,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:51:42,668 INFO L124 PetriNetUnfolderBase]: 1783/3028 cut-off events. [2024-11-22 13:51:42,668 INFO L125 PetriNetUnfolderBase]: For 4476/4481 co-relation queries the response was YES. [2024-11-22 13:51:42,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9383 conditions, 3028 events. 1783/3028 cut-off events. For 4476/4481 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 17738 event pairs, 574 based on Foata normal form. 5/3029 useless extension candidates. Maximal degree in co-relation 9352. Up to 1070 conditions per place. [2024-11-22 13:51:42,685 INFO L140 encePairwiseOnDemand]: 23/35 looper letters, 156 selfloop transitions, 39 changer transitions 22/221 dead transitions. [2024-11-22 13:51:42,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 221 transitions, 1487 flow [2024-11-22 13:51:42,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-22 13:51:42,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-22 13:51:42,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 307 transitions. [2024-11-22 13:51:42,687 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4616541353383459 [2024-11-22 13:51:42,687 INFO L175 Difference]: Start difference. First operand has 60 places, 58 transitions, 361 flow. Second operand 19 states and 307 transitions. [2024-11-22 13:51:42,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 221 transitions, 1487 flow [2024-11-22 13:51:42,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 221 transitions, 1465 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-11-22 13:51:42,698 INFO L231 Difference]: Finished difference. Result has 83 places, 95 transitions, 848 flow [2024-11-22 13:51:42,698 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=351, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=848, PETRI_PLACES=83, PETRI_TRANSITIONS=95} [2024-11-22 13:51:42,701 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 45 predicate places. [2024-11-22 13:51:42,702 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 95 transitions, 848 flow [2024-11-22 13:51:42,702 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 9.25) internal successors, (296), 32 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:51:42,702 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:51:42,702 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] [2024-11-22 13:51:42,710 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-22 13:51:42,903 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-22 13:51:42,904 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 13:51:42,904 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:51:42,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1592560558, now seen corresponding path program 6 times [2024-11-22 13:51:42,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:51:42,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143380387] [2024-11-22 13:51:42,905 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 13:51:42,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:51:42,947 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-22 13:51:42,948 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:51:43,233 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-22 13:51:43,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:51:43,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143380387] [2024-11-22 13:51:43,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143380387] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:51:43,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:51:43,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-22 13:51:43,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997511531] [2024-11-22 13:51:43,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:51:43,235 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-22 13:51:43,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:51:43,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-22 13:51:43,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-22 13:51:43,242 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35 [2024-11-22 13:51:43,242 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 95 transitions, 848 flow. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:51:43,242 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:51:43,242 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35 [2024-11-22 13:51:43,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:51:43,658 INFO L124 PetriNetUnfolderBase]: 1902/3259 cut-off events. [2024-11-22 13:51:43,658 INFO L125 PetriNetUnfolderBase]: For 8153/8158 co-relation queries the response was YES. [2024-11-22 13:51:43,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11231 conditions, 3259 events. 1902/3259 cut-off events. For 8153/8158 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 19629 event pairs, 425 based on Foata normal form. 6/3260 useless extension candidates. Maximal degree in co-relation 11194. Up to 1422 conditions per place. [2024-11-22 13:51:43,673 INFO L140 encePairwiseOnDemand]: 26/35 looper letters, 92 selfloop transitions, 37 changer transitions 19/152 dead transitions. [2024-11-22 13:51:43,674 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 152 transitions, 1345 flow [2024-11-22 13:51:43,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 13:51:43,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-22 13:51:43,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 152 transitions. [2024-11-22 13:51:43,675 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5428571428571428 [2024-11-22 13:51:43,675 INFO L175 Difference]: Start difference. First operand has 83 places, 95 transitions, 848 flow. Second operand 8 states and 152 transitions. [2024-11-22 13:51:43,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 152 transitions, 1345 flow [2024-11-22 13:51:43,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 152 transitions, 1279 flow, removed 31 selfloop flow, removed 4 redundant places. [2024-11-22 13:51:43,695 INFO L231 Difference]: Finished difference. Result has 86 places, 97 transitions, 900 flow [2024-11-22 13:51:43,695 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=790, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=900, PETRI_PLACES=86, PETRI_TRANSITIONS=97} [2024-11-22 13:51:43,696 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 48 predicate places. [2024-11-22 13:51:43,696 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 97 transitions, 900 flow [2024-11-22 13:51:43,696 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:51:43,696 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:51:43,696 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] [2024-11-22 13:51:43,696 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-22 13:51:43,696 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 13:51:43,696 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:51:43,696 INFO L85 PathProgramCache]: Analyzing trace with hash -1632198074, now seen corresponding path program 7 times [2024-11-22 13:51:43,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:51:43,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437137350] [2024-11-22 13:51:43,697 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-22 13:51:43,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:51:43,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:51:44,534 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:51:44,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:51:44,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437137350] [2024-11-22 13:51:44,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437137350] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:51:44,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2029525435] [2024-11-22 13:51:44,535 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-22 13:51:44,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:51:44,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:51:44,537 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 13:51:44,537 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-22 13:51:44,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:51:44,602 INFO L255 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-22 13:51:44,604 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:51:44,652 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-22 13:51:44,934 INFO L349 Elim1Store]: treesize reduction 16, result has 15.8 percent of original size [2024-11-22 13:51:44,934 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 65 treesize of output 34 [2024-11-22 13:51:44,963 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:51:44,963 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:51:45,606 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 81 treesize of output 73 [2024-11-22 13:51:45,645 INFO L349 Elim1Store]: treesize reduction 8, result has 82.2 percent of original size [2024-11-22 13:51:45,645 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 140 treesize of output 138 [2024-11-22 13:51:47,122 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:51:47,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2029525435] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:51:47,122 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:51:47,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 28 [2024-11-22 13:51:47,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550229345] [2024-11-22 13:51:47,123 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:51:47,123 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-22 13:51:47,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:51:47,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-22 13:51:47,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=690, Unknown=0, NotChecked=0, Total=812 [2024-11-22 13:51:47,153 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35 [2024-11-22 13:51:47,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 97 transitions, 900 flow. Second operand has 29 states, 29 states have (on average 9.448275862068966) internal successors, (274), 29 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:51:47,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:51:47,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35 [2024-11-22 13:51:47,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:51:49,260 INFO L124 PetriNetUnfolderBase]: 2252/3925 cut-off events. [2024-11-22 13:51:49,261 INFO L125 PetriNetUnfolderBase]: For 12003/12024 co-relation queries the response was YES. [2024-11-22 13:51:49,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13446 conditions, 3925 events. 2252/3925 cut-off events. For 12003/12024 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 24769 event pairs, 788 based on Foata normal form. 22/3945 useless extension candidates. Maximal degree in co-relation 13399. Up to 1201 conditions per place. [2024-11-22 13:51:49,283 INFO L140 encePairwiseOnDemand]: 22/35 looper letters, 163 selfloop transitions, 51 changer transitions 17/235 dead transitions. [2024-11-22 13:51:49,283 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 235 transitions, 1919 flow [2024-11-22 13:51:49,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-22 13:51:49,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-22 13:51:49,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 302 transitions. [2024-11-22 13:51:49,285 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4793650793650794 [2024-11-22 13:51:49,285 INFO L175 Difference]: Start difference. First operand has 86 places, 97 transitions, 900 flow. Second operand 18 states and 302 transitions. [2024-11-22 13:51:49,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 235 transitions, 1919 flow [2024-11-22 13:51:49,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 235 transitions, 1831 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-11-22 13:51:49,308 INFO L231 Difference]: Finished difference. Result has 106 places, 120 transitions, 1251 flow [2024-11-22 13:51:49,308 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=832, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1251, PETRI_PLACES=106, PETRI_TRANSITIONS=120} [2024-11-22 13:51:49,309 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 68 predicate places. [2024-11-22 13:51:49,309 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 120 transitions, 1251 flow [2024-11-22 13:51:49,309 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 9.448275862068966) internal successors, (274), 29 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:51:49,310 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:51:49,310 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] [2024-11-22 13:51:49,319 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-22 13:51:49,513 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:51:49,514 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 13:51:49,514 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:51:49,514 INFO L85 PathProgramCache]: Analyzing trace with hash 845876534, now seen corresponding path program 8 times [2024-11-22 13:51:49,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:51:49,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181462595] [2024-11-22 13:51:49,515 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:51:49,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:51:49,541 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-22 13:51:49,541 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:51:49,752 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-22 13:51:49,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:51:49,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181462595] [2024-11-22 13:51:49,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181462595] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:51:49,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:51:49,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-22 13:51:49,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921383263] [2024-11-22 13:51:49,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:51:49,753 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-22 13:51:49,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:51:49,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-22 13:51:49,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-22 13:51:49,762 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35 [2024-11-22 13:51:49,762 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 120 transitions, 1251 flow. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:51:49,762 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:51:49,762 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35 [2024-11-22 13:51:49,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:51:50,238 INFO L124 PetriNetUnfolderBase]: 2317/4057 cut-off events. [2024-11-22 13:51:50,239 INFO L125 PetriNetUnfolderBase]: For 15651/15701 co-relation queries the response was YES. [2024-11-22 13:51:50,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14775 conditions, 4057 events. 2317/4057 cut-off events. For 15651/15701 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 25764 event pairs, 636 based on Foata normal form. 36/4090 useless extension candidates. Maximal degree in co-relation 14719. Up to 2058 conditions per place. [2024-11-22 13:51:50,265 INFO L140 encePairwiseOnDemand]: 26/35 looper letters, 107 selfloop transitions, 41 changer transitions 19/171 dead transitions. [2024-11-22 13:51:50,265 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 171 transitions, 1800 flow [2024-11-22 13:51:50,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 13:51:50,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-22 13:51:50,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 141 transitions. [2024-11-22 13:51:50,267 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5035714285714286 [2024-11-22 13:51:50,267 INFO L175 Difference]: Start difference. First operand has 106 places, 120 transitions, 1251 flow. Second operand 8 states and 141 transitions. [2024-11-22 13:51:50,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 171 transitions, 1800 flow [2024-11-22 13:51:50,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 171 transitions, 1749 flow, removed 22 selfloop flow, removed 5 redundant places. [2024-11-22 13:51:50,310 INFO L231 Difference]: Finished difference. Result has 110 places, 123 transitions, 1343 flow [2024-11-22 13:51:50,310 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1204, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1343, PETRI_PLACES=110, PETRI_TRANSITIONS=123} [2024-11-22 13:51:50,311 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 72 predicate places. [2024-11-22 13:51:50,311 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 123 transitions, 1343 flow [2024-11-22 13:51:50,311 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:51:50,311 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:51:50,311 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:51:50,311 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-22 13:51:50,311 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 13:51:50,311 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:51:50,311 INFO L85 PathProgramCache]: Analyzing trace with hash -1935944822, now seen corresponding path program 9 times [2024-11-22 13:51:50,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:51:50,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075279251] [2024-11-22 13:51:50,312 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 13:51:50,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:51:50,330 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-22 13:51:50,330 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:51:50,555 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-22 13:51:50,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:51:50,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075279251] [2024-11-22 13:51:50,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075279251] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:51:50,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:51:50,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-22 13:51:50,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058068572] [2024-11-22 13:51:50,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:51:50,556 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-22 13:51:50,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:51:50,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-22 13:51:50,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-22 13:51:50,562 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35 [2024-11-22 13:51:50,562 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 123 transitions, 1343 flow. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:51:50,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:51:50,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35 [2024-11-22 13:51:50,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:51:51,073 INFO L124 PetriNetUnfolderBase]: 2287/4007 cut-off events. [2024-11-22 13:51:51,074 INFO L125 PetriNetUnfolderBase]: For 18513/18534 co-relation queries the response was YES. [2024-11-22 13:51:51,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15047 conditions, 4007 events. 2287/4007 cut-off events. For 18513/18534 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 25530 event pairs, 584 based on Foata normal form. 17/4021 useless extension candidates. Maximal degree in co-relation 14988. Up to 2082 conditions per place. [2024-11-22 13:51:51,109 INFO L140 encePairwiseOnDemand]: 26/35 looper letters, 118 selfloop transitions, 39 changer transitions 17/178 dead transitions. [2024-11-22 13:51:51,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 178 transitions, 1899 flow [2024-11-22 13:51:51,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 13:51:51,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-22 13:51:51,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 147 transitions. [2024-11-22 13:51:51,110 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.525 [2024-11-22 13:51:51,110 INFO L175 Difference]: Start difference. First operand has 110 places, 123 transitions, 1343 flow. Second operand 8 states and 147 transitions. [2024-11-22 13:51:51,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 178 transitions, 1899 flow [2024-11-22 13:51:51,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 178 transitions, 1813 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-11-22 13:51:51,155 INFO L231 Difference]: Finished difference. Result has 114 places, 125 transitions, 1388 flow [2024-11-22 13:51:51,156 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1263, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1388, PETRI_PLACES=114, PETRI_TRANSITIONS=125} [2024-11-22 13:51:51,156 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 76 predicate places. [2024-11-22 13:51:51,156 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 125 transitions, 1388 flow [2024-11-22 13:51:51,157 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:51:51,157 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:51:51,157 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:51:51,157 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-22 13:51:51,157 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 13:51:51,157 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:51:51,158 INFO L85 PathProgramCache]: Analyzing trace with hash 220634210, now seen corresponding path program 10 times [2024-11-22 13:51:51,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:51:51,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71501930] [2024-11-22 13:51:51,158 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 13:51:51,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:51:51,194 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 13:51:51,194 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:51:52,028 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:51:52,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:51:52,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71501930] [2024-11-22 13:51:52,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71501930] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:51:52,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1292095040] [2024-11-22 13:51:52,029 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 13:51:52,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:51:52,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:51:52,032 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 13:51:52,033 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-22 13:51:52,093 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 13:51:52,093 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:51:52,094 INFO L255 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-22 13:51:52,095 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:51:52,249 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-22 13:51:52,249 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:51:52,373 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-22 13:51:52,373 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 58 treesize of output 24 [2024-11-22 13:51:52,425 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-22 13:51:52,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1292095040] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-22 13:51:52,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-22 13:51:52,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [12, 9] total 26 [2024-11-22 13:51:52,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921618398] [2024-11-22 13:51:52,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:51:52,426 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-22 13:51:52,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:51:52,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-22 13:51:52,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=579, Unknown=0, NotChecked=0, Total=650 [2024-11-22 13:51:52,433 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35 [2024-11-22 13:51:52,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 125 transitions, 1388 flow. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:51:52,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:51:52,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35 [2024-11-22 13:51:52,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:51:53,167 INFO L124 PetriNetUnfolderBase]: 2683/4766 cut-off events. [2024-11-22 13:51:53,167 INFO L125 PetriNetUnfolderBase]: For 20576/20610 co-relation queries the response was YES. [2024-11-22 13:51:53,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17315 conditions, 4766 events. 2683/4766 cut-off events. For 20576/20610 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 31125 event pairs, 751 based on Foata normal form. 35/4798 useless extension candidates. Maximal degree in co-relation 17226. Up to 1421 conditions per place. [2024-11-22 13:51:53,189 INFO L140 encePairwiseOnDemand]: 26/35 looper letters, 119 selfloop transitions, 66 changer transitions 23/212 dead transitions. [2024-11-22 13:51:53,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 212 transitions, 2155 flow [2024-11-22 13:51:53,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-22 13:51:53,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-22 13:51:53,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 190 transitions. [2024-11-22 13:51:53,190 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5428571428571428 [2024-11-22 13:51:53,190 INFO L175 Difference]: Start difference. First operand has 114 places, 125 transitions, 1388 flow. Second operand 10 states and 190 transitions. [2024-11-22 13:51:53,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 212 transitions, 2155 flow [2024-11-22 13:51:53,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 212 transitions, 2066 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-11-22 13:51:53,235 INFO L231 Difference]: Finished difference. Result has 121 places, 130 transitions, 1551 flow [2024-11-22 13:51:53,236 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1313, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1551, PETRI_PLACES=121, PETRI_TRANSITIONS=130} [2024-11-22 13:51:53,236 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 83 predicate places. [2024-11-22 13:51:53,237 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 130 transitions, 1551 flow [2024-11-22 13:51:53,237 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:51:53,237 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:51:53,237 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] [2024-11-22 13:51:53,246 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-22 13:51:53,438 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:51:53,438 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 13:51:53,438 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:51:53,438 INFO L85 PathProgramCache]: Analyzing trace with hash -712166943, now seen corresponding path program 1 times [2024-11-22 13:51:53,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:51:53,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769588717] [2024-11-22 13:51:53,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:51:53,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:51:53,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:51:53,509 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-22 13:51:53,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:51:53,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769588717] [2024-11-22 13:51:53,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769588717] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:51:53,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [903599821] [2024-11-22 13:51:53,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:51:53,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:51:53,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:51:53,512 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 13:51:53,513 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-22 13:51:53,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:51:53,570 INFO L255 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-22 13:51:53,571 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:51:53,587 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-22 13:51:53,587 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:51:53,610 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-22 13:51:53,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [903599821] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-22 13:51:53,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-22 13:51:53,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 5] total 7 [2024-11-22 13:51:53,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228269901] [2024-11-22 13:51:53,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:51:53,612 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 13:51:53,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:51:53,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 13:51:53,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-22 13:51:53,615 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35 [2024-11-22 13:51:53,616 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 130 transitions, 1551 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:51:53,616 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:51:53,616 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35 [2024-11-22 13:51:53,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:51:54,037 INFO L124 PetriNetUnfolderBase]: 3308/5659 cut-off events. [2024-11-22 13:51:54,037 INFO L125 PetriNetUnfolderBase]: For 25083/25103 co-relation queries the response was YES. [2024-11-22 13:51:54,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20275 conditions, 5659 events. 3308/5659 cut-off events. For 25083/25103 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 35871 event pairs, 915 based on Foata normal form. 12/5091 useless extension candidates. Maximal degree in co-relation 20183. Up to 3307 conditions per place. [2024-11-22 13:51:54,071 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 132 selfloop transitions, 11 changer transitions 0/179 dead transitions. [2024-11-22 13:51:54,071 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 179 transitions, 2379 flow [2024-11-22 13:51:54,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 13:51:54,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-22 13:51:54,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 83 transitions. [2024-11-22 13:51:54,073 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5928571428571429 [2024-11-22 13:51:54,073 INFO L175 Difference]: Start difference. First operand has 121 places, 130 transitions, 1551 flow. Second operand 4 states and 83 transitions. [2024-11-22 13:51:54,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 179 transitions, 2379 flow [2024-11-22 13:51:54,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 179 transitions, 2226 flow, removed 29 selfloop flow, removed 7 redundant places. [2024-11-22 13:51:54,152 INFO L231 Difference]: Finished difference. Result has 117 places, 136 transitions, 1532 flow [2024-11-22 13:51:54,152 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1416, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1532, PETRI_PLACES=117, PETRI_TRANSITIONS=136} [2024-11-22 13:51:54,153 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 79 predicate places. [2024-11-22 13:51:54,153 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 136 transitions, 1532 flow [2024-11-22 13:51:54,153 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:51:54,153 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:51:54,153 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] [2024-11-22 13:51:54,160 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-22 13:51:54,357 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-22 13:51:54,358 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 13:51:54,358 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:51:54,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1516301293, now seen corresponding path program 2 times [2024-11-22 13:51:54,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:51:54,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497839786] [2024-11-22 13:51:54,358 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:51:54,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:51:54,382 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:51:54,382 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:51:54,414 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-22 13:51:54,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:51:54,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497839786] [2024-11-22 13:51:54,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497839786] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:51:54,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:51:54,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 13:51:54,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239228613] [2024-11-22 13:51:54,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:51:54,416 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 13:51:54,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:51:54,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 13:51:54,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 13:51:54,418 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35 [2024-11-22 13:51:54,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 136 transitions, 1532 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:51:54,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:51:54,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35 [2024-11-22 13:51:54,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:51:54,923 INFO L124 PetriNetUnfolderBase]: 3127/5533 cut-off events. [2024-11-22 13:51:54,924 INFO L125 PetriNetUnfolderBase]: For 23209/23245 co-relation queries the response was YES. [2024-11-22 13:51:54,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20451 conditions, 5533 events. 3127/5533 cut-off events. For 23209/23245 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 36672 event pairs, 1458 based on Foata normal form. 144/5629 useless extension candidates. Maximal degree in co-relation 19518. Up to 2708 conditions per place. [2024-11-22 13:51:54,954 INFO L140 encePairwiseOnDemand]: 31/35 looper letters, 118 selfloop transitions, 16 changer transitions 8/175 dead transitions. [2024-11-22 13:51:54,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 175 transitions, 2133 flow [2024-11-22 13:51:54,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 13:51:54,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-22 13:51:54,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 85 transitions. [2024-11-22 13:51:54,960 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6071428571428571 [2024-11-22 13:51:54,960 INFO L175 Difference]: Start difference. First operand has 117 places, 136 transitions, 1532 flow. Second operand 4 states and 85 transitions. [2024-11-22 13:51:54,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 175 transitions, 2133 flow [2024-11-22 13:51:55,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 175 transitions, 2127 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-22 13:51:55,032 INFO L231 Difference]: Finished difference. Result has 121 places, 133 transitions, 1536 flow [2024-11-22 13:51:55,032 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1491, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1536, PETRI_PLACES=121, PETRI_TRANSITIONS=133} [2024-11-22 13:51:55,033 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 83 predicate places. [2024-11-22 13:51:55,033 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 133 transitions, 1536 flow [2024-11-22 13:51:55,033 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:51:55,033 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:51:55,033 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] [2024-11-22 13:51:55,033 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-22 13:51:55,033 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 13:51:55,034 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:51:55,034 INFO L85 PathProgramCache]: Analyzing trace with hash 1921257202, now seen corresponding path program 1 times [2024-11-22 13:51:55,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:51:55,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885522457] [2024-11-22 13:51:55,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:51:55,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:51:55,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:51:55,095 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-22 13:51:55,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:51:55,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885522457] [2024-11-22 13:51:55,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885522457] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:51:55,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:51:55,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 13:51:55,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641589455] [2024-11-22 13:51:55,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:51:55,097 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 13:51:55,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:51:55,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 13:51:55,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-22 13:51:55,100 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35 [2024-11-22 13:51:55,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 133 transitions, 1536 flow. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:51:55,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:51:55,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35 [2024-11-22 13:51:55,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:51:55,551 INFO L124 PetriNetUnfolderBase]: 2708/4773 cut-off events. [2024-11-22 13:51:55,551 INFO L125 PetriNetUnfolderBase]: For 23986/24014 co-relation queries the response was YES. [2024-11-22 13:51:55,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19126 conditions, 4773 events. 2708/4773 cut-off events. For 23986/24014 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 30472 event pairs, 603 based on Foata normal form. 138/4882 useless extension candidates. Maximal degree in co-relation 18610. Up to 2440 conditions per place. [2024-11-22 13:51:55,577 INFO L140 encePairwiseOnDemand]: 27/35 looper letters, 114 selfloop transitions, 29 changer transitions 14/186 dead transitions. [2024-11-22 13:51:55,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 186 transitions, 2255 flow [2024-11-22 13:51:55,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 13:51:55,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-22 13:51:55,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 132 transitions. [2024-11-22 13:51:55,579 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5387755102040817 [2024-11-22 13:51:55,579 INFO L175 Difference]: Start difference. First operand has 121 places, 133 transitions, 1536 flow. Second operand 7 states and 132 transitions. [2024-11-22 13:51:55,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 186 transitions, 2255 flow [2024-11-22 13:51:55,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 186 transitions, 2153 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-11-22 13:51:55,642 INFO L231 Difference]: Finished difference. Result has 121 places, 122 transitions, 1364 flow [2024-11-22 13:51:55,642 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1280, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1364, PETRI_PLACES=121, PETRI_TRANSITIONS=122} [2024-11-22 13:51:55,643 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 83 predicate places. [2024-11-22 13:51:55,643 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 122 transitions, 1364 flow [2024-11-22 13:51:55,643 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:51:55,643 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:51:55,643 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] [2024-11-22 13:51:55,643 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-22 13:51:55,643 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 13:51:55,643 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:51:55,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1602540650, now seen corresponding path program 2 times [2024-11-22 13:51:55,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:51:55,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274753951] [2024-11-22 13:51:55,644 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:51:55,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:51:55,664 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:51:55,664 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:51:55,701 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-22 13:51:55,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:51:55,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274753951] [2024-11-22 13:51:55,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274753951] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:51:55,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:51:55,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 13:51:55,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528037792] [2024-11-22 13:51:55,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:51:55,702 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 13:51:55,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:51:55,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 13:51:55,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 13:51:55,705 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35 [2024-11-22 13:51:55,705 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 122 transitions, 1364 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:51:55,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:51:55,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35 [2024-11-22 13:51:55,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:51:56,070 INFO L124 PetriNetUnfolderBase]: 2542/4523 cut-off events. [2024-11-22 13:51:56,071 INFO L125 PetriNetUnfolderBase]: For 22378/22426 co-relation queries the response was YES. [2024-11-22 13:51:56,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18100 conditions, 4523 events. 2542/4523 cut-off events. For 22378/22426 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 28899 event pairs, 1028 based on Foata normal form. 146/4592 useless extension candidates. Maximal degree in co-relation 17836. Up to 2126 conditions per place. [2024-11-22 13:51:56,098 INFO L140 encePairwiseOnDemand]: 31/35 looper letters, 110 selfloop transitions, 16 changer transitions 8/161 dead transitions. [2024-11-22 13:51:56,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 161 transitions, 1893 flow [2024-11-22 13:51:56,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 13:51:56,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-22 13:51:56,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 88 transitions. [2024-11-22 13:51:56,099 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6285714285714286 [2024-11-22 13:51:56,099 INFO L175 Difference]: Start difference. First operand has 121 places, 122 transitions, 1364 flow. Second operand 4 states and 88 transitions. [2024-11-22 13:51:56,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 161 transitions, 1893 flow [2024-11-22 13:51:56,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 161 transitions, 1798 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-11-22 13:51:56,143 INFO L231 Difference]: Finished difference. Result has 117 places, 119 transitions, 1279 flow [2024-11-22 13:51:56,143 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1259, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1279, PETRI_PLACES=117, PETRI_TRANSITIONS=119} [2024-11-22 13:51:56,143 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 79 predicate places. [2024-11-22 13:51:56,143 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 119 transitions, 1279 flow [2024-11-22 13:51:56,143 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:51:56,143 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:51:56,143 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] [2024-11-22 13:51:56,143 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-22 13:51:56,144 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 13:51:56,144 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:51:56,144 INFO L85 PathProgramCache]: Analyzing trace with hash -1430829148, now seen corresponding path program 3 times [2024-11-22 13:51:56,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:51:56,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491516093] [2024-11-22 13:51:56,144 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 13:51:56,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:51:56,164 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-22 13:51:56,164 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:51:56,250 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-22 13:51:56,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:51:56,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491516093] [2024-11-22 13:51:56,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491516093] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:51:56,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [545793171] [2024-11-22 13:51:56,251 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 13:51:56,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:51:56,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:51:56,253 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 13:51:56,254 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-22 13:51:56,317 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-22 13:51:56,317 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:51:56,318 INFO L255 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-22 13:51:56,319 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:51:56,338 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-22 13:51:56,338 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:51:56,364 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-22 13:51:56,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [545793171] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:51:56,364 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:51:56,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 10 [2024-11-22 13:51:56,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950032604] [2024-11-22 13:51:56,364 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:51:56,365 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 13:51:56,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:51:56,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 13:51:56,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-11-22 13:51:56,370 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35 [2024-11-22 13:51:56,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 119 transitions, 1279 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:51:56,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:51:56,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35 [2024-11-22 13:51:56,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:51:56,739 INFO L124 PetriNetUnfolderBase]: 2040/3660 cut-off events. [2024-11-22 13:51:56,739 INFO L125 PetriNetUnfolderBase]: For 18645/18701 co-relation queries the response was YES. [2024-11-22 13:51:56,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15416 conditions, 3660 events. 2040/3660 cut-off events. For 18645/18701 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 22633 event pairs, 791 based on Foata normal form. 120/3757 useless extension candidates. Maximal degree in co-relation 14974. Up to 1970 conditions per place. [2024-11-22 13:51:56,757 INFO L140 encePairwiseOnDemand]: 27/35 looper letters, 108 selfloop transitions, 35 changer transitions 10/177 dead transitions. [2024-11-22 13:51:56,757 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 177 transitions, 1944 flow [2024-11-22 13:51:56,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 13:51:56,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-22 13:51:56,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 144 transitions. [2024-11-22 13:51:56,758 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5142857142857142 [2024-11-22 13:51:56,758 INFO L175 Difference]: Start difference. First operand has 117 places, 119 transitions, 1279 flow. Second operand 8 states and 144 transitions. [2024-11-22 13:51:56,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 177 transitions, 1944 flow [2024-11-22 13:51:56,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 177 transitions, 1868 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-11-22 13:51:56,793 INFO L231 Difference]: Finished difference. Result has 120 places, 115 transitions, 1270 flow [2024-11-22 13:51:56,793 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1114, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1270, PETRI_PLACES=120, PETRI_TRANSITIONS=115} [2024-11-22 13:51:56,793 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 82 predicate places. [2024-11-22 13:51:56,793 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 115 transitions, 1270 flow [2024-11-22 13:51:56,793 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:51:56,793 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:51:56,794 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] [2024-11-22 13:51:56,801 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-22 13:51:56,994 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-22 13:51:56,994 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 13:51:56,995 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:51:56,995 INFO L85 PathProgramCache]: Analyzing trace with hash 352788609, now seen corresponding path program 1 times [2024-11-22 13:51:56,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:51:56,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263980858] [2024-11-22 13:51:56,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:51:56,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:51:57,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:51:58,978 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:51:58,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:51:58,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263980858] [2024-11-22 13:51:58,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263980858] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:51:58,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [387414539] [2024-11-22 13:51:58,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:51:58,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:51:58,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:51:58,982 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 13:51:58,983 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-22 13:51:59,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:51:59,056 INFO L255 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-22 13:51:59,057 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:51:59,097 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-22 13:51:59,412 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:51:59,412 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:52:21,154 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 81 treesize of output 73 [2024-11-22 13:52:21,235 INFO L349 Elim1Store]: treesize reduction 8, result has 82.2 percent of original size [2024-11-22 13:52:21,235 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 174 treesize of output 160 [2024-11-22 13:52:23,652 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:52:23,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [387414539] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:52:23,652 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:52:23,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 36 [2024-11-22 13:52:23,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388375762] [2024-11-22 13:52:23,652 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:52:23,652 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-22 13:52:23,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:52:23,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-22 13:52:23,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=1117, Unknown=4, NotChecked=0, Total=1332 [2024-11-22 13:52:23,661 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35 [2024-11-22 13:52:23,661 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 115 transitions, 1270 flow. Second operand has 37 states, 37 states have (on average 9.27027027027027) internal successors, (343), 37 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:52:23,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:52:23,661 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35 [2024-11-22 13:52:23,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:52:29,194 INFO L124 PetriNetUnfolderBase]: 2471/4350 cut-off events. [2024-11-22 13:52:29,194 INFO L125 PetriNetUnfolderBase]: For 24265/24303 co-relation queries the response was YES. [2024-11-22 13:52:29,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19615 conditions, 4350 events. 2471/4350 cut-off events. For 24265/24303 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 26839 event pairs, 800 based on Foata normal form. 14/4347 useless extension candidates. Maximal degree in co-relation 18533. Up to 1382 conditions per place. [2024-11-22 13:52:29,221 INFO L140 encePairwiseOnDemand]: 22/35 looper letters, 199 selfloop transitions, 52 changer transitions 44/309 dead transitions. [2024-11-22 13:52:29,221 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 309 transitions, 2986 flow [2024-11-22 13:52:29,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-22 13:52:29,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-22 13:52:29,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 398 transitions. [2024-11-22 13:52:29,223 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45485714285714285 [2024-11-22 13:52:29,223 INFO L175 Difference]: Start difference. First operand has 120 places, 115 transitions, 1270 flow. Second operand 25 states and 398 transitions. [2024-11-22 13:52:29,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 309 transitions, 2986 flow [2024-11-22 13:52:29,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 309 transitions, 2899 flow, removed 29 selfloop flow, removed 2 redundant places. [2024-11-22 13:52:29,264 INFO L231 Difference]: Finished difference. Result has 147 places, 138 transitions, 1662 flow [2024-11-22 13:52:29,264 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1233, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=1662, PETRI_PLACES=147, PETRI_TRANSITIONS=138} [2024-11-22 13:52:29,265 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 109 predicate places. [2024-11-22 13:52:29,265 INFO L471 AbstractCegarLoop]: Abstraction has has 147 places, 138 transitions, 1662 flow [2024-11-22 13:52:29,265 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 9.27027027027027) internal successors, (343), 37 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:52:29,265 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:52:29,265 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] [2024-11-22 13:52:29,272 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-22 13:52:29,465 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:52:29,466 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 13:52:29,466 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:52:29,466 INFO L85 PathProgramCache]: Analyzing trace with hash 287636799, now seen corresponding path program 2 times [2024-11-22 13:52:29,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:52:29,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063222382] [2024-11-22 13:52:29,466 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:52:29,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:52:29,482 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:52:29,483 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:52:30,384 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:52:30,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:52:30,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063222382] [2024-11-22 13:52:30,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063222382] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:52:30,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [321707899] [2024-11-22 13:52:30,384 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:52:30,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:52:30,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:52:30,386 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 13:52:30,386 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-22 13:52:30,454 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:52:30,454 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:52:30,455 INFO L255 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-22 13:52:30,457 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:52:30,523 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-22 13:52:30,971 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:52:30,971 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:52:32,053 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 78 treesize of output 70 [2024-11-22 13:52:32,104 INFO L349 Elim1Store]: treesize reduction 13, result has 64.9 percent of original size [2024-11-22 13:52:32,104 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 167 treesize of output 138 [2024-11-22 13:52:32,410 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:52:32,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [321707899] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:52:32,410 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:52:32,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 35 [2024-11-22 13:52:32,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706850511] [2024-11-22 13:52:32,410 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:52:32,411 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-22 13:52:32,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:52:32,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-22 13:52:32,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=1069, Unknown=0, NotChecked=0, Total=1260 [2024-11-22 13:52:32,430 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35 [2024-11-22 13:52:32,431 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 138 transitions, 1662 flow. Second operand has 36 states, 36 states have (on average 9.333333333333334) internal successors, (336), 36 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:52:32,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:52:32,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35 [2024-11-22 13:52:32,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:52:40,229 INFO L124 PetriNetUnfolderBase]: 5199/8987 cut-off events. [2024-11-22 13:52:40,229 INFO L125 PetriNetUnfolderBase]: For 62449/62547 co-relation queries the response was YES. [2024-11-22 13:52:40,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44237 conditions, 8987 events. 5199/8987 cut-off events. For 62449/62547 co-relation queries the response was YES. Maximal size of possible extension queue 441. Compared 62953 event pairs, 988 based on Foata normal form. 47/8991 useless extension candidates. Maximal degree in co-relation 44166. Up to 1393 conditions per place. [2024-11-22 13:52:40,283 INFO L140 encePairwiseOnDemand]: 23/35 looper letters, 409 selfloop transitions, 146 changer transitions 51/620 dead transitions. [2024-11-22 13:52:40,283 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 620 transitions, 6475 flow [2024-11-22 13:52:40,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-11-22 13:52:40,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2024-11-22 13:52:40,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 768 transitions. [2024-11-22 13:52:40,285 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4668693009118541 [2024-11-22 13:52:40,285 INFO L175 Difference]: Start difference. First operand has 147 places, 138 transitions, 1662 flow. Second operand 47 states and 768 transitions. [2024-11-22 13:52:40,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 620 transitions, 6475 flow [2024-11-22 13:52:40,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 620 transitions, 6290 flow, removed 65 selfloop flow, removed 13 redundant places. [2024-11-22 13:52:40,438 INFO L231 Difference]: Finished difference. Result has 192 places, 247 transitions, 3565 flow [2024-11-22 13:52:40,438 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1539, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=3565, PETRI_PLACES=192, PETRI_TRANSITIONS=247} [2024-11-22 13:52:40,438 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 154 predicate places. [2024-11-22 13:52:40,438 INFO L471 AbstractCegarLoop]: Abstraction has has 192 places, 247 transitions, 3565 flow [2024-11-22 13:52:40,438 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 9.333333333333334) internal successors, (336), 36 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:52:40,438 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:52:40,439 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] [2024-11-22 13:52:40,445 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-22 13:52:40,639 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:52:40,640 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 13:52:40,641 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:52:40,641 INFO L85 PathProgramCache]: Analyzing trace with hash 1255808305, now seen corresponding path program 3 times [2024-11-22 13:52:40,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:52:40,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505608657] [2024-11-22 13:52:40,641 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 13:52:40,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:52:40,658 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-22 13:52:40,658 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:52:41,800 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:52:41,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:52:41,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505608657] [2024-11-22 13:52:41,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505608657] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:52:41,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1261790185] [2024-11-22 13:52:41,801 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 13:52:41,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:52:41,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:52:41,802 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 13:52:41,803 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-22 13:52:41,885 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-22 13:52:41,885 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:52:41,887 INFO L255 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-22 13:52:41,890 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:52:41,985 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-22 13:52:42,594 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:52:42,594 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:52:43,670 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 78 treesize of output 70 [2024-11-22 13:52:43,718 INFO L349 Elim1Store]: treesize reduction 13, result has 64.9 percent of original size [2024-11-22 13:52:43,718 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 167 treesize of output 138 [2024-11-22 13:52:44,006 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:52:44,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1261790185] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:52:44,007 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:52:44,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 35 [2024-11-22 13:52:44,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987932107] [2024-11-22 13:52:44,007 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:52:44,007 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-22 13:52:44,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:52:44,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-22 13:52:44,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=1066, Unknown=0, NotChecked=0, Total=1260 [2024-11-22 13:52:44,133 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35 [2024-11-22 13:52:44,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 247 transitions, 3565 flow. Second operand has 36 states, 36 states have (on average 9.333333333333334) internal successors, (336), 36 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:52:44,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:52:44,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35 [2024-11-22 13:52:44,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:52:48,804 INFO L124 PetriNetUnfolderBase]: 5672/9919 cut-off events. [2024-11-22 13:52:48,805 INFO L125 PetriNetUnfolderBase]: For 82474/82588 co-relation queries the response was YES. [2024-11-22 13:52:48,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51034 conditions, 9919 events. 5672/9919 cut-off events. For 82474/82588 co-relation queries the response was YES. Maximal size of possible extension queue 482. Compared 71879 event pairs, 1327 based on Foata normal form. 50/9929 useless extension candidates. Maximal degree in co-relation 50940. Up to 1420 conditions per place. [2024-11-22 13:52:48,897 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 377 selfloop transitions, 114 changer transitions 34/539 dead transitions. [2024-11-22 13:52:48,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 539 transitions, 6559 flow [2024-11-22 13:52:48,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-22 13:52:48,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2024-11-22 13:52:48,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 523 transitions. [2024-11-22 13:52:48,899 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48202764976958523 [2024-11-22 13:52:48,899 INFO L175 Difference]: Start difference. First operand has 192 places, 247 transitions, 3565 flow. Second operand 31 states and 523 transitions. [2024-11-22 13:52:48,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 539 transitions, 6559 flow [2024-11-22 13:52:49,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 539 transitions, 5806 flow, removed 329 selfloop flow, removed 16 redundant places. [2024-11-22 13:52:49,428 INFO L231 Difference]: Finished difference. Result has 210 places, 261 transitions, 3391 flow [2024-11-22 13:52:49,428 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=2937, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=3391, PETRI_PLACES=210, PETRI_TRANSITIONS=261} [2024-11-22 13:52:49,428 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 172 predicate places. [2024-11-22 13:52:49,428 INFO L471 AbstractCegarLoop]: Abstraction has has 210 places, 261 transitions, 3391 flow [2024-11-22 13:52:49,429 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 9.333333333333334) internal successors, (336), 36 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:52:49,429 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:52:49,429 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] [2024-11-22 13:52:49,435 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-22 13:52:49,629 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:52:49,629 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 13:52:49,630 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:52:49,630 INFO L85 PathProgramCache]: Analyzing trace with hash -800674897, now seen corresponding path program 4 times [2024-11-22 13:52:49,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:52:49,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691760960] [2024-11-22 13:52:49,630 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 13:52:49,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:52:49,654 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 13:52:49,654 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:52:51,327 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:52:51,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:52:51,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691760960] [2024-11-22 13:52:51,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691760960] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:52:51,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [141334875] [2024-11-22 13:52:51,327 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 13:52:51,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:52:51,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:52:51,329 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 13:52:51,330 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-22 13:52:51,391 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 13:52:51,391 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:52:51,392 INFO L255 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-22 13:52:51,393 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:52:51,467 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-22 13:52:51,999 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:52:51,999 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:52:53,136 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 78 treesize of output 70 [2024-11-22 13:52:53,198 INFO L349 Elim1Store]: treesize reduction 13, result has 64.9 percent of original size [2024-11-22 13:52:53,198 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 167 treesize of output 138 [2024-11-22 13:52:53,484 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:52:53,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [141334875] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:52:53,485 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:52:53,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 37 [2024-11-22 13:52:53,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025251428] [2024-11-22 13:52:53,485 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:52:53,485 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-22 13:52:53,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:52:53,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-22 13:52:53,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=1228, Unknown=0, NotChecked=0, Total=1406 [2024-11-22 13:52:53,518 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35 [2024-11-22 13:52:53,518 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 261 transitions, 3391 flow. Second operand has 38 states, 38 states have (on average 9.210526315789474) internal successors, (350), 38 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:52:53,518 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:52:53,518 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35 [2024-11-22 13:52:53,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand