./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-more-min-array-hom.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c7c6ca5d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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-min-array-hom.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 0224e82797c7b26c7800eaf85be5e5678e7961d21aa4e2312eda2860d261b33a --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-09 02:47:46,061 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 02:47:46,150 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 02:47:46,157 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 02:47:46,157 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 02:47:46,209 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 02:47:46,210 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 02:47:46,211 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 02:47:46,211 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 02:47:46,212 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 02:47:46,212 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 02:47:46,212 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 02:47:46,213 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 02:47:46,215 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 02:47:46,215 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 02:47:46,216 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 02:47:46,216 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 02:47:46,216 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 02:47:46,217 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 02:47:46,217 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 02:47:46,217 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 02:47:46,218 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 02:47:46,218 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 02:47:46,222 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 02:47:46,222 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 02:47:46,222 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 02:47:46,222 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 02:47:46,223 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 02:47:46,223 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 02:47:46,223 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 02:47:46,223 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 02:47:46,224 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 02:47:46,224 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 02:47:46,224 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 02:47:46,224 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 02:47:46,225 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 02:47:46,225 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 02:47:46,225 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 02:47:46,225 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 02:47:46,225 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 02:47:46,226 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 02:47:46,227 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 02:47:46,227 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0224e82797c7b26c7800eaf85be5e5678e7961d21aa4e2312eda2860d261b33a [2024-11-09 02:47:46,467 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 02:47:46,489 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 02:47:46,491 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 02:47:46,492 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 02:47:46,492 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 02:47:46,493 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more-min-array-hom.wvr.c [2024-11-09 02:47:47,908 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 02:47:48,088 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 02:47:48,088 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-min-array-hom.wvr.c [2024-11-09 02:47:48,096 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36ae31a82/d6b67d411e54444d828b0d5a09658554/FLAG89c63727c [2024-11-09 02:47:48,478 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36ae31a82/d6b67d411e54444d828b0d5a09658554 [2024-11-09 02:47:48,482 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 02:47:48,483 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 02:47:48,484 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 02:47:48,484 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 02:47:48,490 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 02:47:48,491 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 02:47:48" (1/1) ... [2024-11-09 02:47:48,492 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12f2321f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:47:48, skipping insertion in model container [2024-11-09 02:47:48,492 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 02:47:48" (1/1) ... [2024-11-09 02:47:48,520 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 02:47:48,752 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-min-array-hom.wvr.c[2625,2638] [2024-11-09 02:47:48,764 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 02:47:48,790 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 02:47:48,823 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-min-array-hom.wvr.c[2625,2638] [2024-11-09 02:47:48,829 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 02:47:48,868 INFO L204 MainTranslator]: Completed translation [2024-11-09 02:47:48,868 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:47:48 WrapperNode [2024-11-09 02:47:48,868 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 02:47:48,870 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 02:47:48,870 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 02:47:48,870 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 02:47:48,884 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:47:48" (1/1) ... [2024-11-09 02:47:48,893 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:47:48" (1/1) ... [2024-11-09 02:47:48,919 INFO L138 Inliner]: procedures = 23, calls = 28, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 87 [2024-11-09 02:47:48,920 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 02:47:48,921 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 02:47:48,921 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 02:47:48,921 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 02:47:48,931 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:47:48" (1/1) ... [2024-11-09 02:47:48,931 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:47:48" (1/1) ... [2024-11-09 02:47:48,935 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:47:48" (1/1) ... [2024-11-09 02:47:48,967 INFO L175 MemorySlicer]: Split 9 memory accesses to 2 slices as follows [2, 7]. 78 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]. [2024-11-09 02:47:48,970 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:47:48" (1/1) ... [2024-11-09 02:47:48,971 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:47:48" (1/1) ... [2024-11-09 02:47:48,976 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:47:48" (1/1) ... [2024-11-09 02:47:48,983 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:47:48" (1/1) ... [2024-11-09 02:47:48,988 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:47:48" (1/1) ... [2024-11-09 02:47:48,993 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:47:48" (1/1) ... [2024-11-09 02:47:48,999 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 02:47:49,000 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 02:47:49,004 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 02:47:49,004 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 02:47:49,005 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:47:48" (1/1) ... [2024-11-09 02:47:49,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 02:47:49,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:47:49,046 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) [2024-11-09 02:47:49,053 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 [2024-11-09 02:47:49,096 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 02:47:49,096 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-09 02:47:49,097 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-09 02:47:49,097 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-09 02:47:49,097 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-09 02:47:49,097 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-09 02:47:49,098 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-09 02:47:49,098 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 02:47:49,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 02:47:49,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 02:47:49,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 02:47:49,099 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-09 02:47:49,100 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-09 02:47:49,100 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 02:47:49,100 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 02:47:49,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 02:47:49,101 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 02:47:49,101 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 02:47:49,103 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-09 02:47:49,208 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 02:47:49,211 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 02:47:49,516 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 02:47:49,518 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 02:47:49,708 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 02:47:49,709 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-09 02:47:49,709 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 02:47:49 BoogieIcfgContainer [2024-11-09 02:47:49,709 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 02:47:49,712 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 02:47:49,712 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 02:47:49,715 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 02:47:49,715 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 02:47:48" (1/3) ... [2024-11-09 02:47:49,716 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37c11b47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 02:47:49, skipping insertion in model container [2024-11-09 02:47:49,716 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:47:48" (2/3) ... [2024-11-09 02:47:49,716 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37c11b47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 02:47:49, skipping insertion in model container [2024-11-09 02:47:49,717 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 02:47:49" (3/3) ... [2024-11-09 02:47:49,720 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-min-array-hom.wvr.c [2024-11-09 02:47:49,744 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 02:47:49,744 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 02:47:49,744 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 02:47:49,809 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-09 02:47:49,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 33 transitions, 87 flow [2024-11-09 02:47:49,885 INFO L124 PetriNetUnfolderBase]: 4/30 cut-off events. [2024-11-09 02:47:49,887 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-09 02:47:49,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43 conditions, 30 events. 4/30 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 43 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 24. Up to 2 conditions per place. [2024-11-09 02:47:49,892 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 33 transitions, 87 flow [2024-11-09 02:47:49,895 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 35 places, 29 transitions, 76 flow [2024-11-09 02:47:49,906 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 02:47:49,915 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;@3c6c0934, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 02:47:49,916 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-09 02:47:49,933 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 02:47:49,933 INFO L124 PetriNetUnfolderBase]: 4/28 cut-off events. [2024-11-09 02:47:49,933 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-09 02:47:49,934 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:47:49,934 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:47:49,935 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)] === [2024-11-09 02:47:49,940 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:47:49,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1958378008, now seen corresponding path program 1 times [2024-11-09 02:47:49,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:47:49,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870450229] [2024-11-09 02:47:49,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:47:49,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:47:50,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:47:50,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:47:50,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:47:50,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870450229] [2024-11-09 02:47:50,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870450229] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:47:50,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:47:50,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 02:47:50,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764114644] [2024-11-09 02:47:50,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:47:50,414 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 02:47:50,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:47:50,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 02:47:50,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 02:47:50,452 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-11-09 02:47:50,454 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 29 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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) [2024-11-09 02:47:50,454 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:47:50,454 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-11-09 02:47:50,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:47:50,705 INFO L124 PetriNetUnfolderBase]: 617/956 cut-off events. [2024-11-09 02:47:50,706 INFO L125 PetriNetUnfolderBase]: For 87/87 co-relation queries the response was YES. [2024-11-09 02:47:50,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1951 conditions, 956 events. 617/956 cut-off events. For 87/87 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3838 event pairs, 126 based on Foata normal form. 1/952 useless extension candidates. Maximal degree in co-relation 1717. Up to 677 conditions per place. [2024-11-09 02:47:50,721 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 37 selfloop transitions, 4 changer transitions 1/46 dead transitions. [2024-11-09 02:47:50,722 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 46 transitions, 209 flow [2024-11-09 02:47:50,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 02:47:50,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 02:47:50,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 64 transitions. [2024-11-09 02:47:50,735 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6464646464646465 [2024-11-09 02:47:50,737 INFO L175 Difference]: Start difference. First operand has 35 places, 29 transitions, 76 flow. Second operand 3 states and 64 transitions. [2024-11-09 02:47:50,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 46 transitions, 209 flow [2024-11-09 02:47:50,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 46 transitions, 187 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-09 02:47:50,748 INFO L231 Difference]: Finished difference. Result has 32 places, 32 transitions, 90 flow [2024-11-09 02:47:50,750 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=32, PETRI_TRANSITIONS=32} [2024-11-09 02:47:50,754 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, -3 predicate places. [2024-11-09 02:47:50,756 INFO L471 AbstractCegarLoop]: Abstraction has has 32 places, 32 transitions, 90 flow [2024-11-09 02:47:50,757 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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) [2024-11-09 02:47:50,757 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:47:50,757 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] [2024-11-09 02:47:50,757 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 02:47:50,758 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)] === [2024-11-09 02:47:50,759 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:47:50,759 INFO L85 PathProgramCache]: Analyzing trace with hash -2056652879, now seen corresponding path program 1 times [2024-11-09 02:47:50,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:47:50,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294713096] [2024-11-09 02:47:50,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:47:50,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:47:50,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:47:50,969 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:47:50,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:47:50,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294713096] [2024-11-09 02:47:50,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294713096] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:47:50,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:47:50,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 02:47:50,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368453359] [2024-11-09 02:47:50,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:47:50,973 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 02:47:50,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:47:50,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 02:47:50,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 02:47:50,982 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-11-09 02:47:50,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 32 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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) [2024-11-09 02:47:50,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:47:50,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-11-09 02:47:50,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:47:51,142 INFO L124 PetriNetUnfolderBase]: 617/965 cut-off events. [2024-11-09 02:47:51,143 INFO L125 PetriNetUnfolderBase]: For 198/198 co-relation queries the response was YES. [2024-11-09 02:47:51,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2170 conditions, 965 events. 617/965 cut-off events. For 198/198 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 4063 event pairs, 407 based on Foata normal form. 0/957 useless extension candidates. Maximal degree in co-relation 812. Up to 895 conditions per place. [2024-11-09 02:47:51,153 INFO L140 encePairwiseOnDemand]: 30/33 looper letters, 27 selfloop transitions, 2 changer transitions 0/33 dead transitions. [2024-11-09 02:47:51,154 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 33 transitions, 150 flow [2024-11-09 02:47:51,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 02:47:51,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 02:47:51,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 48 transitions. [2024-11-09 02:47:51,156 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48484848484848486 [2024-11-09 02:47:51,156 INFO L175 Difference]: Start difference. First operand has 32 places, 32 transitions, 90 flow. Second operand 3 states and 48 transitions. [2024-11-09 02:47:51,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 33 transitions, 150 flow [2024-11-09 02:47:51,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 33 transitions, 146 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 02:47:51,159 INFO L231 Difference]: Finished difference. Result has 34 places, 33 transitions, 98 flow [2024-11-09 02:47:51,159 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=34, PETRI_TRANSITIONS=33} [2024-11-09 02:47:51,161 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, -1 predicate places. [2024-11-09 02:47:51,161 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 33 transitions, 98 flow [2024-11-09 02:47:51,164 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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) [2024-11-09 02:47:51,164 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:47:51,164 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] [2024-11-09 02:47:51,164 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 02:47:51,164 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)] === [2024-11-09 02:47:51,165 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:47:51,165 INFO L85 PathProgramCache]: Analyzing trace with hash -448016717, now seen corresponding path program 1 times [2024-11-09 02:47:51,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:47:51,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949758582] [2024-11-09 02:47:51,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:47:51,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:47:51,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:47:51,278 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 02:47:51,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:47:51,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949758582] [2024-11-09 02:47:51,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949758582] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:47:51,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:47:51,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 02:47:51,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155110231] [2024-11-09 02:47:51,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:47:51,280 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 02:47:51,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:47:51,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 02:47:51,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 02:47:51,292 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-11-09 02:47:51,293 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 33 transitions, 98 flow. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:47:51,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:47:51,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-11-09 02:47:51,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:47:51,472 INFO L124 PetriNetUnfolderBase]: 790/1159 cut-off events. [2024-11-09 02:47:51,472 INFO L125 PetriNetUnfolderBase]: For 186/186 co-relation queries the response was YES. [2024-11-09 02:47:51,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2573 conditions, 1159 events. 790/1159 cut-off events. For 186/186 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 4529 event pairs, 246 based on Foata normal form. 0/1114 useless extension candidates. Maximal degree in co-relation 2560. Up to 576 conditions per place. [2024-11-09 02:47:51,483 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 40 selfloop transitions, 4 changer transitions 0/47 dead transitions. [2024-11-09 02:47:51,483 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 47 transitions, 224 flow [2024-11-09 02:47:51,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 02:47:51,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 02:47:51,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 63 transitions. [2024-11-09 02:47:51,486 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4772727272727273 [2024-11-09 02:47:51,486 INFO L175 Difference]: Start difference. First operand has 34 places, 33 transitions, 98 flow. Second operand 4 states and 63 transitions. [2024-11-09 02:47:51,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 47 transitions, 224 flow [2024-11-09 02:47:51,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 47 transitions, 218 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-09 02:47:51,490 INFO L231 Difference]: Finished difference. Result has 38 places, 34 transitions, 113 flow [2024-11-09 02:47:51,490 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=113, PETRI_PLACES=38, PETRI_TRANSITIONS=34} [2024-11-09 02:47:51,491 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 3 predicate places. [2024-11-09 02:47:51,492 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 34 transitions, 113 flow [2024-11-09 02:47:51,492 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:47:51,492 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:47:51,492 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] [2024-11-09 02:47:51,493 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 02:47:51,493 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)] === [2024-11-09 02:47:51,494 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:47:51,494 INFO L85 PathProgramCache]: Analyzing trace with hash -164649811, now seen corresponding path program 1 times [2024-11-09 02:47:51,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:47:51,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575862190] [2024-11-09 02:47:51,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:47:51,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:47:51,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:47:51,635 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:47:51,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:47:51,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575862190] [2024-11-09 02:47:51,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575862190] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:47:51,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [237377374] [2024-11-09 02:47:51,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:47:51,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:47:51,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:47:51,640 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) [2024-11-09 02:47:51,642 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 02:47:51,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:47:51,748 INFO L255 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 02:47:51,753 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:47:51,829 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:47:51,830 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:47:51,878 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:47:51,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [237377374] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 02:47:51,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 02:47:51,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2024-11-09 02:47:51,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822888754] [2024-11-09 02:47:51,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:47:51,883 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 02:47:51,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:47:51,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 02:47:51,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-09 02:47:51,893 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-11-09 02:47:51,894 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 34 transitions, 113 flow. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 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) [2024-11-09 02:47:51,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:47:51,894 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-11-09 02:47:51,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:47:52,074 INFO L124 PetriNetUnfolderBase]: 850/1295 cut-off events. [2024-11-09 02:47:52,075 INFO L125 PetriNetUnfolderBase]: For 486/486 co-relation queries the response was YES. [2024-11-09 02:47:52,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3227 conditions, 1295 events. 850/1295 cut-off events. For 486/486 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 5466 event pairs, 256 based on Foata normal form. 0/1243 useless extension candidates. Maximal degree in co-relation 3207. Up to 670 conditions per place. [2024-11-09 02:47:52,087 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 41 selfloop transitions, 5 changer transitions 0/50 dead transitions. [2024-11-09 02:47:52,087 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 50 transitions, 257 flow [2024-11-09 02:47:52,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 02:47:52,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 02:47:52,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 72 transitions. [2024-11-09 02:47:52,089 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43636363636363634 [2024-11-09 02:47:52,089 INFO L175 Difference]: Start difference. First operand has 38 places, 34 transitions, 113 flow. Second operand 5 states and 72 transitions. [2024-11-09 02:47:52,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 50 transitions, 257 flow [2024-11-09 02:47:52,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 50 transitions, 251 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 02:47:52,093 INFO L231 Difference]: Finished difference. Result has 42 places, 35 transitions, 132 flow [2024-11-09 02:47:52,093 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=132, PETRI_PLACES=42, PETRI_TRANSITIONS=35} [2024-11-09 02:47:52,094 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 7 predicate places. [2024-11-09 02:47:52,094 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 35 transitions, 132 flow [2024-11-09 02:47:52,094 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 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) [2024-11-09 02:47:52,095 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:47:52,095 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:47:52,114 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 02:47:52,299 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:47:52,300 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)] === [2024-11-09 02:47:52,301 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:47:52,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1682656032, now seen corresponding path program 1 times [2024-11-09 02:47:52,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:47:52,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112189186] [2024-11-09 02:47:52,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:47:52,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:47:52,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:47:53,041 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:47:53,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:47:53,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112189186] [2024-11-09 02:47:53,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112189186] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:47:53,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1779316910] [2024-11-09 02:47:53,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:47:53,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:47:53,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:47:53,045 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) [2024-11-09 02:47:53,047 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 02:47:53,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:47:53,131 INFO L255 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-09 02:47:53,136 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:47:53,214 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 [2024-11-09 02:47:53,510 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 59 treesize of output 35 [2024-11-09 02:47:53,613 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:47:53,613 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:47:56,137 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 282 treesize of output 254 [2024-11-09 02:47:56,214 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 02:47:56,215 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 372 treesize of output 376 [2024-11-09 02:48:15,753 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 226 treesize of output 208 [2024-11-09 02:48:15,810 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 02:48:15,811 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 261 treesize of output 291 [2024-11-09 02:48:18,243 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:48:18,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1779316910] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:48:18,243 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:48:18,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 23 [2024-11-09 02:48:18,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872820820] [2024-11-09 02:48:18,244 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:48:18,244 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-09 02:48:18,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:48:18,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-09 02:48:18,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=449, Unknown=0, NotChecked=0, Total=552 [2024-11-09 02:48:18,432 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-11-09 02:48:18,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 35 transitions, 132 flow. Second operand has 24 states, 24 states have (on average 8.708333333333334) internal successors, (209), 24 states have internal predecessors, (209), 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) [2024-11-09 02:48:18,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:48:18,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-11-09 02:48:18,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:48:20,584 INFO L124 PetriNetUnfolderBase]: 1841/2767 cut-off events. [2024-11-09 02:48:20,584 INFO L125 PetriNetUnfolderBase]: For 1740/1740 co-relation queries the response was YES. [2024-11-09 02:48:20,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7675 conditions, 2767 events. 1841/2767 cut-off events. For 1740/1740 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 12710 event pairs, 98 based on Foata normal form. 1/2767 useless extension candidates. Maximal degree in co-relation 5619. Up to 1375 conditions per place. [2024-11-09 02:48:20,603 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 137 selfloop transitions, 57 changer transitions 1/199 dead transitions. [2024-11-09 02:48:20,603 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 199 transitions, 1067 flow [2024-11-09 02:48:20,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-09 02:48:20,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-09 02:48:20,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 321 transitions. [2024-11-09 02:48:20,608 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46320346320346323 [2024-11-09 02:48:20,609 INFO L175 Difference]: Start difference. First operand has 42 places, 35 transitions, 132 flow. Second operand 21 states and 321 transitions. [2024-11-09 02:48:20,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 199 transitions, 1067 flow [2024-11-09 02:48:20,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 199 transitions, 1050 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-09 02:48:20,620 INFO L231 Difference]: Finished difference. Result has 64 places, 91 transitions, 543 flow [2024-11-09 02:48:20,620 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=543, PETRI_PLACES=64, PETRI_TRANSITIONS=91} [2024-11-09 02:48:20,621 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 29 predicate places. [2024-11-09 02:48:20,621 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 91 transitions, 543 flow [2024-11-09 02:48:20,621 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 8.708333333333334) internal successors, (209), 24 states have internal predecessors, (209), 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) [2024-11-09 02:48:20,621 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:48:20,622 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:48:20,639 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 02:48:20,825 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:48:20,826 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)] === [2024-11-09 02:48:20,826 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:48:20,826 INFO L85 PathProgramCache]: Analyzing trace with hash 1004642878, now seen corresponding path program 2 times [2024-11-09 02:48:20,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:48:20,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6376740] [2024-11-09 02:48:20,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:48:20,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:48:20,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:48:21,444 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:48:21,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:48:21,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6376740] [2024-11-09 02:48:21,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6376740] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:48:21,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [906003765] [2024-11-09 02:48:21,448 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 02:48:21,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:48:21,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:48:21,450 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) [2024-11-09 02:48:21,451 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 02:48:21,523 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 02:48:21,523 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:48:21,525 INFO L255 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-09 02:48:21,528 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:48:21,552 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 [2024-11-09 02:48:21,748 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 58 treesize of output 34 [2024-11-09 02:48:21,808 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:48:21,808 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:48:23,315 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 282 treesize of output 254 [2024-11-09 02:48:23,364 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 02:48:23,365 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 372 treesize of output 376 [2024-11-09 02:48:51,161 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 226 treesize of output 208 [2024-11-09 02:48:51,211 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 02:48:51,211 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 261 treesize of output 291 [2024-11-09 02:48:56,712 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:48:56,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [906003765] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:48:56,713 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:48:56,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 18 [2024-11-09 02:48:56,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574451861] [2024-11-09 02:48:56,713 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:48:56,714 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-09 02:48:56,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:48:56,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-09 02:48:56,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2024-11-09 02:48:56,807 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-11-09 02:48:56,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 91 transitions, 543 flow. Second operand has 19 states, 19 states have (on average 9.736842105263158) internal successors, (185), 19 states have internal predecessors, (185), 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) [2024-11-09 02:48:56,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:48:56,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-11-09 02:48:56,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:48:58,024 INFO L124 PetriNetUnfolderBase]: 1538/2453 cut-off events. [2024-11-09 02:48:58,025 INFO L125 PetriNetUnfolderBase]: For 3246/3251 co-relation queries the response was YES. [2024-11-09 02:48:58,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8007 conditions, 2453 events. 1538/2453 cut-off events. For 3246/3251 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 12295 event pairs, 122 based on Foata normal form. 5/2457 useless extension candidates. Maximal degree in co-relation 7445. Up to 1629 conditions per place. [2024-11-09 02:48:58,048 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 125 selfloop transitions, 49 changer transitions 1/181 dead transitions. [2024-11-09 02:48:58,048 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 181 transitions, 1211 flow [2024-11-09 02:48:58,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-09 02:48:58,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-09 02:48:58,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 242 transitions. [2024-11-09 02:48:58,050 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4888888888888889 [2024-11-09 02:48:58,050 INFO L175 Difference]: Start difference. First operand has 64 places, 91 transitions, 543 flow. Second operand 15 states and 242 transitions. [2024-11-09 02:48:58,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 181 transitions, 1211 flow [2024-11-09 02:48:58,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 181 transitions, 1093 flow, removed 44 selfloop flow, removed 3 redundant places. [2024-11-09 02:48:58,068 INFO L231 Difference]: Finished difference. Result has 76 places, 111 transitions, 679 flow [2024-11-09 02:48:58,069 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=453, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=679, PETRI_PLACES=76, PETRI_TRANSITIONS=111} [2024-11-09 02:48:58,071 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 41 predicate places. [2024-11-09 02:48:58,072 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 111 transitions, 679 flow [2024-11-09 02:48:58,072 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 9.736842105263158) internal successors, (185), 19 states have internal predecessors, (185), 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) [2024-11-09 02:48:58,072 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:48:58,073 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:48:58,091 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-09 02:48:58,276 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:48:58,277 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)] === [2024-11-09 02:48:58,277 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:48:58,277 INFO L85 PathProgramCache]: Analyzing trace with hash -1382937676, now seen corresponding path program 3 times [2024-11-09 02:48:58,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:48:58,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043717363] [2024-11-09 02:48:58,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:48:58,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:48:58,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:48:58,778 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:48:58,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:48:58,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043717363] [2024-11-09 02:48:58,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043717363] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:48:58,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [833544375] [2024-11-09 02:48:58,779 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 02:48:58,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:48:58,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:48:58,781 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) [2024-11-09 02:48:58,781 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 02:48:58,852 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-09 02:48:58,852 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:48:58,853 INFO L255 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-09 02:48:58,855 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:48:58,875 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 [2024-11-09 02:48:59,090 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 58 treesize of output 34 [2024-11-09 02:48:59,140 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:48:59,140 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:49:00,592 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 106 treesize of output 96 [2024-11-09 02:49:00,602 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 02:49:00,602 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 125 treesize of output 119 [2024-11-09 02:49:00,834 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 183 treesize of output 167 [2024-11-09 02:49:00,849 INFO L349 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2024-11-09 02:49:00,849 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 215 treesize of output 1 [2024-11-09 02:49:00,853 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 217 treesize of output 195 [2024-11-09 02:49:00,863 INFO L349 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2024-11-09 02:49:00,863 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 296 treesize of output 1 [2024-11-09 02:49:00,932 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:49:00,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [833544375] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:49:00,932 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:49:00,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 22 [2024-11-09 02:49:00,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079084955] [2024-11-09 02:49:00,932 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:49:00,933 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-09 02:49:00,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:49:00,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-09 02:49:00,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=412, Unknown=0, NotChecked=0, Total=506 [2024-11-09 02:49:01,095 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-11-09 02:49:01,095 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 111 transitions, 679 flow. Second operand has 23 states, 23 states have (on average 8.826086956521738) internal successors, (203), 23 states have internal predecessors, (203), 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) [2024-11-09 02:49:01,095 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:49:01,095 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-11-09 02:49:01,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:49:02,954 INFO L124 PetriNetUnfolderBase]: 2837/4308 cut-off events. [2024-11-09 02:49:02,954 INFO L125 PetriNetUnfolderBase]: For 4924/4933 co-relation queries the response was YES. [2024-11-09 02:49:02,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13787 conditions, 4308 events. 2837/4308 cut-off events. For 4924/4933 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 22319 event pairs, 138 based on Foata normal form. 10/4317 useless extension candidates. Maximal degree in co-relation 12450. Up to 2499 conditions per place. [2024-11-09 02:49:02,977 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 162 selfloop transitions, 89 changer transitions 2/257 dead transitions. [2024-11-09 02:49:02,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 257 transitions, 1757 flow [2024-11-09 02:49:02,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-09 02:49:02,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-09 02:49:02,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 292 transitions. [2024-11-09 02:49:02,979 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46570972886762363 [2024-11-09 02:49:02,979 INFO L175 Difference]: Start difference. First operand has 76 places, 111 transitions, 679 flow. Second operand 19 states and 292 transitions. [2024-11-09 02:49:02,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 257 transitions, 1757 flow [2024-11-09 02:49:02,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 257 transitions, 1720 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-11-09 02:49:02,995 INFO L231 Difference]: Finished difference. Result has 96 places, 156 transitions, 1222 flow [2024-11-09 02:49:02,996 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=645, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1222, PETRI_PLACES=96, PETRI_TRANSITIONS=156} [2024-11-09 02:49:02,996 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 61 predicate places. [2024-11-09 02:49:02,996 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 156 transitions, 1222 flow [2024-11-09 02:49:02,997 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 8.826086956521738) internal successors, (203), 23 states have internal predecessors, (203), 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) [2024-11-09 02:49:02,997 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:49:02,997 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:49:03,013 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 02:49:03,197 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:49:03,197 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)] === [2024-11-09 02:49:03,198 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:49:03,198 INFO L85 PathProgramCache]: Analyzing trace with hash -224932964, now seen corresponding path program 4 times [2024-11-09 02:49:03,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:49:03,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100256739] [2024-11-09 02:49:03,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:49:03,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:49:03,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:49:03,679 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:49:03,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:49:03,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100256739] [2024-11-09 02:49:03,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100256739] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:49:03,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1072329826] [2024-11-09 02:49:03,680 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 02:49:03,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:49:03,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:49:03,683 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) [2024-11-09 02:49:03,685 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 02:49:03,746 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 02:49:03,746 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:49:03,747 INFO L255 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-09 02:49:03,749 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:49:03,767 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 [2024-11-09 02:49:03,973 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 58 treesize of output 34 [2024-11-09 02:49:04,023 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:49:04,023 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:49:05,390 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 183 treesize of output 167 [2024-11-09 02:49:05,417 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 02:49:05,418 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 215 treesize of output 219 [2024-11-09 02:49:09,756 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 217 treesize of output 195 [2024-11-09 02:49:09,793 INFO L349 Elim1Store]: treesize reduction 20, result has 59.2 percent of original size [2024-11-09 02:49:09,794 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 296 treesize of output 258 [2024-11-09 02:49:09,951 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 106 treesize of output 96 [2024-11-09 02:49:09,965 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-09 02:49:09,966 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 125 treesize of output 115 [2024-11-09 02:49:10,190 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:49:10,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1072329826] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:49:10,190 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:49:10,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 21 [2024-11-09 02:49:10,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299579645] [2024-11-09 02:49:10,191 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:49:10,191 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-09 02:49:10,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:49:10,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-09 02:49:10,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=373, Unknown=0, NotChecked=0, Total=462 [2024-11-09 02:49:10,321 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-11-09 02:49:10,322 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 156 transitions, 1222 flow. Second operand has 22 states, 22 states have (on average 8.954545454545455) internal successors, (197), 22 states have internal predecessors, (197), 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) [2024-11-09 02:49:10,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:49:10,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-11-09 02:49:10,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:49:12,419 INFO L124 PetriNetUnfolderBase]: 3261/4930 cut-off events. [2024-11-09 02:49:12,419 INFO L125 PetriNetUnfolderBase]: For 8646/8655 co-relation queries the response was YES. [2024-11-09 02:49:12,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17788 conditions, 4930 events. 3261/4930 cut-off events. For 8646/8655 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 25884 event pairs, 206 based on Foata normal form. 10/4939 useless extension candidates. Maximal degree in co-relation 16264. Up to 1864 conditions per place. [2024-11-09 02:49:12,446 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 140 selfloop transitions, 140 changer transitions 1/285 dead transitions. [2024-11-09 02:49:12,446 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 285 transitions, 2273 flow [2024-11-09 02:49:12,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-09 02:49:12,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-09 02:49:12,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 320 transitions. [2024-11-09 02:49:12,448 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46176046176046176 [2024-11-09 02:49:12,448 INFO L175 Difference]: Start difference. First operand has 96 places, 156 transitions, 1222 flow. Second operand 21 states and 320 transitions. [2024-11-09 02:49:12,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 285 transitions, 2273 flow [2024-11-09 02:49:12,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 285 transitions, 2224 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-11-09 02:49:12,476 INFO L231 Difference]: Finished difference. Result has 113 places, 180 transitions, 1697 flow [2024-11-09 02:49:12,477 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1173, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1697, PETRI_PLACES=113, PETRI_TRANSITIONS=180} [2024-11-09 02:49:12,477 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 78 predicate places. [2024-11-09 02:49:12,477 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 180 transitions, 1697 flow [2024-11-09 02:49:12,478 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 8.954545454545455) internal successors, (197), 22 states have internal predecessors, (197), 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) [2024-11-09 02:49:12,478 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:49:12,478 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:49:12,491 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-09 02:49:12,678 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:49:12,679 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)] === [2024-11-09 02:49:12,680 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:49:12,680 INFO L85 PathProgramCache]: Analyzing trace with hash -1284775082, now seen corresponding path program 5 times [2024-11-09 02:49:12,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:49:12,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368073593] [2024-11-09 02:49:12,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:49:12,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:49:12,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:49:13,088 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:49:13,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:49:13,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368073593] [2024-11-09 02:49:13,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368073593] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:49:13,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [209339790] [2024-11-09 02:49:13,088 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 02:49:13,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:49:13,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:49:13,090 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) [2024-11-09 02:49:13,093 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 02:49:13,163 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 02:49:13,163 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:49:13,170 INFO L255 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-09 02:49:13,172 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:49:13,214 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 [2024-11-09 02:49:13,446 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 59 treesize of output 35