./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/parallel-lamport.wvr.c --full-output --traceabstraction.positions.where.we.compute.the.hoare.annotation All --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 448d4d75 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/parallel-lamport.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 dda4e60b50ccb96ce521fa11aa956967863397082d82b1fb589f74967fe28a7c --traceabstraction.positions.where.we.compute.the.hoare.annotation All --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.owicki-witnesses-448d4d7-m [2024-02-20 11:58:53,064 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-20 11:58:53,141 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-20 11:58:53,146 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-20 11:58:53,147 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-20 11:58:53,176 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-20 11:58:53,177 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-20 11:58:53,178 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-20 11:58:53,178 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-20 11:58:53,182 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-20 11:58:53,182 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-20 11:58:53,183 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-20 11:58:53,184 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-20 11:58:53,185 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-20 11:58:53,185 INFO L153 SettingsManager]: * Use SBE=true [2024-02-20 11:58:53,186 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-20 11:58:53,186 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-20 11:58:53,186 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-20 11:58:53,186 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-20 11:58:53,186 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-20 11:58:53,187 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-20 11:58:53,187 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-20 11:58:53,187 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-20 11:58:53,188 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-20 11:58:53,188 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-20 11:58:53,188 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-20 11:58:53,188 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-20 11:58:53,189 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-20 11:58:53,189 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-20 11:58:53,190 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-20 11:58:53,190 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-20 11:58:53,191 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-20 11:58:53,191 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-20 11:58:53,191 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-20 11:58:53,191 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-20 11:58:53,191 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-20 11:58:53,192 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-20 11:58:53,192 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-20 11:58:53,192 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-20 11:58:53,192 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-20 11:58:53,192 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-20 11:58:53,193 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-20 11:58:53,193 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-20 11:58:53,193 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dda4e60b50ccb96ce521fa11aa956967863397082d82b1fb589f74967fe28a7c Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All [2024-02-20 11:58:53,461 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-20 11:58:53,486 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-20 11:58:53,489 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-20 11:58:53,490 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-20 11:58:53,490 INFO L274 PluginConnector]: CDTParser initialized [2024-02-20 11:58:53,492 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-lamport.wvr.c [2024-02-20 11:58:54,602 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-20 11:58:54,787 INFO L384 CDTParser]: Found 1 translation units. [2024-02-20 11:58:54,788 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-lamport.wvr.c [2024-02-20 11:58:54,797 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f8fa8e58b/441cd677612541d1a61b2da1ed6f0fde/FLAG7528e823a [2024-02-20 11:58:54,811 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f8fa8e58b/441cd677612541d1a61b2da1ed6f0fde [2024-02-20 11:58:54,813 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-20 11:58:54,814 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-02-20 11:58:54,815 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-20 11:58:54,815 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-20 11:58:54,820 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-20 11:58:54,820 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 11:58:54" (1/1) ... [2024-02-20 11:58:54,821 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73a76275 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:58:54, skipping insertion in model container [2024-02-20 11:58:54,822 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 11:58:54" (1/1) ... [2024-02-20 11:58:54,845 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-02-20 11:58:55,047 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-lamport.wvr.c[4210,4223] [2024-02-20 11:58:55,062 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-20 11:58:55,071 INFO L202 MainTranslator]: Completed pre-run [2024-02-20 11:58:55,092 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-lamport.wvr.c[4210,4223] [2024-02-20 11:58:55,096 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-20 11:58:55,119 INFO L206 MainTranslator]: Completed translation [2024-02-20 11:58:55,120 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:58:55 WrapperNode [2024-02-20 11:58:55,120 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-20 11:58:55,121 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-20 11:58:55,121 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-20 11:58:55,121 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-20 11:58:55,134 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:58:55" (1/1) ... [2024-02-20 11:58:55,155 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:58:55" (1/1) ... [2024-02-20 11:58:55,192 INFO L138 Inliner]: procedures = 25, calls = 89, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 243 [2024-02-20 11:58:55,192 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-20 11:58:55,193 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-20 11:58:55,193 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-20 11:58:55,193 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-20 11:58:55,204 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:58:55" (1/1) ... [2024-02-20 11:58:55,205 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:58:55" (1/1) ... [2024-02-20 11:58:55,215 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:58:55" (1/1) ... [2024-02-20 11:58:55,240 INFO L175 MemorySlicer]: Split 13 memory accesses to 5 slices as follows [2, 5, 2, 2, 2]. 38 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 4 writes are split as follows [0, 1, 1, 1, 1]. [2024-02-20 11:58:55,241 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:58:55" (1/1) ... [2024-02-20 11:58:55,241 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:58:55" (1/1) ... [2024-02-20 11:58:55,253 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:58:55" (1/1) ... [2024-02-20 11:58:55,256 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:58:55" (1/1) ... [2024-02-20 11:58:55,258 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:58:55" (1/1) ... [2024-02-20 11:58:55,259 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:58:55" (1/1) ... [2024-02-20 11:58:55,262 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-20 11:58:55,263 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-20 11:58:55,263 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-20 11:58:55,264 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-20 11:58:55,264 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:58:55" (1/1) ... [2024-02-20 11:58:55,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-20 11:58:55,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:58:55,295 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) [2024-02-20 11:58:55,308 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 [2024-02-20 11:58:55,349 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-20 11:58:55,349 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-20 11:58:55,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-20 11:58:55,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-20 11:58:55,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-20 11:58:55,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-02-20 11:58:55,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-02-20 11:58:55,352 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-02-20 11:58:55,352 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-02-20 11:58:55,353 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-02-20 11:58:55,353 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-02-20 11:58:55,353 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-02-20 11:58:55,353 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-02-20 11:58:55,353 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-02-20 11:58:55,353 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-02-20 11:58:55,354 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-02-20 11:58:55,354 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-02-20 11:58:55,354 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-02-20 11:58:55,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-20 11:58:55,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-20 11:58:55,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-20 11:58:55,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-02-20 11:58:55,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-02-20 11:58:55,356 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-02-20 11:58:55,357 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-02-20 11:58:55,357 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-02-20 11:58:55,357 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-20 11:58:55,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-20 11:58:55,358 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-20 11:58:55,360 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-02-20 11:58:55,494 INFO L244 CfgBuilder]: Building ICFG [2024-02-20 11:58:55,495 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-20 11:58:55,771 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-20 11:58:55,771 INFO L293 CfgBuilder]: Performing block encoding [2024-02-20 11:58:56,094 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-20 11:58:56,095 INFO L320 CfgBuilder]: Removed 1 assume(true) statements. [2024-02-20 11:58:56,095 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 11:58:56 BoogieIcfgContainer [2024-02-20 11:58:56,096 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-20 11:58:56,098 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-20 11:58:56,098 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-20 11:58:56,101 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-20 11:58:56,101 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.02 11:58:54" (1/3) ... [2024-02-20 11:58:56,103 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1970cf13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 11:58:56, skipping insertion in model container [2024-02-20 11:58:56,103 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:58:55" (2/3) ... [2024-02-20 11:58:56,104 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1970cf13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 11:58:56, skipping insertion in model container [2024-02-20 11:58:56,105 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 11:58:56" (3/3) ... [2024-02-20 11:58:56,106 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-lamport.wvr.c [2024-02-20 11:58:56,123 INFO L221 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-20 11:58:56,123 INFO L180 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-02-20 11:58:56,124 INFO L635 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-20 11:58:56,171 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-02-20 11:58:56,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 55 places, 46 transitions, 113 flow [2024-02-20 11:58:56,254 INFO L124 PetriNetUnfolderBase]: 1/43 cut-off events. [2024-02-20 11:58:56,254 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-02-20 11:58:56,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56 conditions, 43 events. 1/43 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 54 event pairs, 0 based on Foata normal form. 0/41 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2024-02-20 11:58:56,257 INFO L82 GeneralOperation]: Start removeDead. Operand has 55 places, 46 transitions, 113 flow [2024-02-20 11:58:56,260 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 51 places, 42 transitions, 102 flow [2024-02-20 11:58:56,276 INFO L368 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-20 11:58:56,281 INFO L369 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, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@1dd02f5a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-20 11:58:56,281 INFO L370 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-02-20 11:58:56,296 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-20 11:58:56,296 INFO L124 PetriNetUnfolderBase]: 1/41 cut-off events. [2024-02-20 11:58:56,296 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-02-20 11:58:56,297 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:58:56,297 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:58:56,298 INFO L432 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)] === [2024-02-20 11:58:56,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:58:56,302 INFO L85 PathProgramCache]: Analyzing trace with hash 950239521, now seen corresponding path program 1 times [2024-02-20 11:58:56,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:58:56,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628420647] [2024-02-20 11:58:56,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:58:56,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:58:56,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:58:56,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:58:56,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:58:56,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628420647] [2024-02-20 11:58:56,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628420647] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 11:58:56,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-20 11:58:56,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-20 11:58:56,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199636302] [2024-02-20 11:58:56,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:58:56,820 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-20 11:58:56,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:58:56,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-20 11:58:56,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-20 11:58:56,846 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 46 [2024-02-20 11:58:56,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 42 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:58:56,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:58:56,848 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 46 [2024-02-20 11:58:56,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:58:57,180 INFO L124 PetriNetUnfolderBase]: 946/1666 cut-off events. [2024-02-20 11:58:57,180 INFO L125 PetriNetUnfolderBase]: For 92/92 co-relation queries the response was YES. [2024-02-20 11:58:57,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3258 conditions, 1666 events. 946/1666 cut-off events. For 92/92 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 9299 event pairs, 945 based on Foata normal form. 0/1638 useless extension candidates. Maximal degree in co-relation 2848. Up to 1465 conditions per place. [2024-02-20 11:58:57,198 INFO L140 encePairwiseOnDemand]: 43/46 looper letters, 28 selfloop transitions, 2 changer transitions 0/43 dead transitions. [2024-02-20 11:58:57,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 43 transitions, 164 flow [2024-02-20 11:58:57,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-20 11:58:57,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-20 11:58:57,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 79 transitions. [2024-02-20 11:58:57,210 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.572463768115942 [2024-02-20 11:58:57,216 INFO L308 CegarLoopForPetriNet]: 51 programPoint places, 2 predicate places. [2024-02-20 11:58:57,217 INFO L507 AbstractCegarLoop]: Abstraction has has 53 places, 43 transitions, 164 flow [2024-02-20 11:58:57,217 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:58:57,217 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:58:57,217 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:58:57,218 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-20 11:58:57,218 INFO L432 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)] === [2024-02-20 11:58:57,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:58:57,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1880756034, now seen corresponding path program 1 times [2024-02-20 11:58:57,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:58:57,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95165845] [2024-02-20 11:58:57,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:58:57,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:58:57,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:58:57,524 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-20 11:58:57,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:58:57,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95165845] [2024-02-20 11:58:57,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95165845] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 11:58:57,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-20 11:58:57,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-20 11:58:57,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753245026] [2024-02-20 11:58:57,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:58:57,528 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-20 11:58:57,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:58:57,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-20 11:58:57,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-02-20 11:58:57,543 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-02-20 11:58:57,544 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 43 transitions, 164 flow. Second operand has 7 states, 7 states have (on average 15.0) internal successors, (105), 7 states have internal predecessors, (105), 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) [2024-02-20 11:58:57,544 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:58:57,544 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-02-20 11:58:57,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:58:58,337 INFO L124 PetriNetUnfolderBase]: 3950/6487 cut-off events. [2024-02-20 11:58:58,337 INFO L125 PetriNetUnfolderBase]: For 1913/1913 co-relation queries the response was YES. [2024-02-20 11:58:58,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17813 conditions, 6487 events. 3950/6487 cut-off events. For 1913/1913 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 39738 event pairs, 737 based on Foata normal form. 60/6544 useless extension candidates. Maximal degree in co-relation 17538. Up to 4925 conditions per place. [2024-02-20 11:58:58,380 INFO L140 encePairwiseOnDemand]: 38/46 looper letters, 133 selfloop transitions, 16 changer transitions 0/156 dead transitions. [2024-02-20 11:58:58,380 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 156 transitions, 924 flow [2024-02-20 11:58:58,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-20 11:58:58,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-20 11:58:58,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 239 transitions. [2024-02-20 11:58:58,387 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5772946859903382 [2024-02-20 11:58:58,388 INFO L308 CegarLoopForPetriNet]: 51 programPoint places, 10 predicate places. [2024-02-20 11:58:58,388 INFO L507 AbstractCegarLoop]: Abstraction has has 61 places, 156 transitions, 924 flow [2024-02-20 11:58:58,389 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 7 states have internal predecessors, (105), 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) [2024-02-20 11:58:58,389 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:58:58,389 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:58:58,390 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-20 11:58:58,390 INFO L432 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)] === [2024-02-20 11:58:58,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:58:58,393 INFO L85 PathProgramCache]: Analyzing trace with hash -725783078, now seen corresponding path program 2 times [2024-02-20 11:58:58,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:58:58,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300782972] [2024-02-20 11:58:58,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:58:58,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:58:58,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:58:59,083 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:58:59,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:58:59,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300782972] [2024-02-20 11:58:59,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300782972] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:58:59,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2123706192] [2024-02-20 11:58:59,084 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-20 11:58:59,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:58:59,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:58:59,086 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) [2024-02-20 11:58:59,113 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-02-20 11:58:59,209 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-02-20 11:58:59,209 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:58:59,212 INFO L262 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 16 conjunts are in the unsatisfiable core [2024-02-20 11:58:59,216 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:58:59,546 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-20 11:58:59,547 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2024-02-20 11:58:59,564 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-20 11:58:59,564 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-02-20 11:58:59,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2123706192] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 11:58:59,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-02-20 11:58:59,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2024-02-20 11:58:59,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814231] [2024-02-20 11:58:59,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:58:59,565 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-20 11:58:59,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:58:59,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-20 11:58:59,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2024-02-20 11:58:59,590 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 46 [2024-02-20 11:58:59,591 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 156 transitions, 924 flow. Second operand has 8 states, 8 states have (on average 17.875) internal successors, (143), 8 states have internal predecessors, (143), 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) [2024-02-20 11:58:59,591 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:58:59,591 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 46 [2024-02-20 11:58:59,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:59:01,064 INFO L124 PetriNetUnfolderBase]: 6999/10933 cut-off events. [2024-02-20 11:59:01,065 INFO L125 PetriNetUnfolderBase]: For 9311/9343 co-relation queries the response was YES. [2024-02-20 11:59:01,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39296 conditions, 10933 events. 6999/10933 cut-off events. For 9311/9343 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 65558 event pairs, 567 based on Foata normal form. 2/10864 useless extension candidates. Maximal degree in co-relation 38665. Up to 8555 conditions per place. [2024-02-20 11:59:01,148 INFO L140 encePairwiseOnDemand]: 38/46 looper letters, 347 selfloop transitions, 65 changer transitions 65/504 dead transitions. [2024-02-20 11:59:01,149 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 504 transitions, 4052 flow [2024-02-20 11:59:01,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-20 11:59:01,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-20 11:59:01,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 264 transitions. [2024-02-20 11:59:01,152 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5739130434782609 [2024-02-20 11:59:01,153 INFO L308 CegarLoopForPetriNet]: 51 programPoint places, 19 predicate places. [2024-02-20 11:59:01,153 INFO L507 AbstractCegarLoop]: Abstraction has has 70 places, 504 transitions, 4052 flow [2024-02-20 11:59:01,156 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.875) internal successors, (143), 8 states have internal predecessors, (143), 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) [2024-02-20 11:59:01,156 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:59:01,157 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:59:01,176 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-02-20 11:59:01,372 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:59:01,373 INFO L432 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)] === [2024-02-20 11:59:01,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:59:01,373 INFO L85 PathProgramCache]: Analyzing trace with hash 1063423450, now seen corresponding path program 3 times [2024-02-20 11:59:01,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:59:01,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108608930] [2024-02-20 11:59:01,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:59:01,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:59:01,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:59:01,865 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:59:01,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:59:01,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108608930] [2024-02-20 11:59:01,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108608930] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:59:01,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [142354635] [2024-02-20 11:59:01,866 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-02-20 11:59:01,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:59:01,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:59:01,867 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) [2024-02-20 11:59:01,869 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-02-20 11:59:01,983 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-02-20 11:59:01,984 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:59:01,985 INFO L262 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 14 conjunts are in the unsatisfiable core [2024-02-20 11:59:01,987 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:59:02,170 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-20 11:59:02,171 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2024-02-20 11:59:02,183 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-20 11:59:02,184 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-02-20 11:59:02,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [142354635] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 11:59:02,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-02-20 11:59:02,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2024-02-20 11:59:02,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669178506] [2024-02-20 11:59:02,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:59:02,185 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-20 11:59:02,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:59:02,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-20 11:59:02,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2024-02-20 11:59:02,197 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 46 [2024-02-20 11:59:02,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 504 transitions, 4052 flow. Second operand has 8 states, 8 states have (on average 17.875) internal successors, (143), 8 states have internal predecessors, (143), 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) [2024-02-20 11:59:02,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:59:02,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 46 [2024-02-20 11:59:02,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:59:04,031 INFO L124 PetriNetUnfolderBase]: 8227/12978 cut-off events. [2024-02-20 11:59:04,032 INFO L125 PetriNetUnfolderBase]: For 18889/19099 co-relation queries the response was YES. [2024-02-20 11:59:04,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57555 conditions, 12978 events. 8227/12978 cut-off events. For 18889/19099 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 81097 event pairs, 465 based on Foata normal form. 2/12901 useless extension candidates. Maximal degree in co-relation 56532. Up to 10226 conditions per place. [2024-02-20 11:59:04,111 INFO L140 encePairwiseOnDemand]: 38/46 looper letters, 494 selfloop transitions, 61 changer transitions 131/713 dead transitions. [2024-02-20 11:59:04,111 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 713 transitions, 7152 flow [2024-02-20 11:59:04,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-20 11:59:04,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-20 11:59:04,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 259 transitions. [2024-02-20 11:59:04,113 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5630434782608695 [2024-02-20 11:59:04,115 INFO L308 CegarLoopForPetriNet]: 51 programPoint places, 28 predicate places. [2024-02-20 11:59:04,116 INFO L507 AbstractCegarLoop]: Abstraction has has 79 places, 713 transitions, 7152 flow [2024-02-20 11:59:04,116 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.875) internal successors, (143), 8 states have internal predecessors, (143), 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) [2024-02-20 11:59:04,116 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:59:04,116 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:59:04,131 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-02-20 11:59:04,330 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-02-20 11:59:04,331 INFO L432 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)] === [2024-02-20 11:59:04,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:59:04,331 INFO L85 PathProgramCache]: Analyzing trace with hash -79843980, now seen corresponding path program 4 times [2024-02-20 11:59:04,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:59:04,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315591842] [2024-02-20 11:59:04,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:59:04,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:59:04,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:59:04,848 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:59:04,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:59:04,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315591842] [2024-02-20 11:59:04,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315591842] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:59:04,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [881701277] [2024-02-20 11:59:04,849 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-02-20 11:59:04,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:59:04,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:59:04,854 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) [2024-02-20 11:59:04,870 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-02-20 11:59:04,940 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-02-20 11:59:04,940 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:59:04,941 INFO L262 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 14 conjunts are in the unsatisfiable core [2024-02-20 11:59:04,943 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:59:05,108 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-20 11:59:05,108 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2024-02-20 11:59:05,120 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-20 11:59:05,120 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-02-20 11:59:05,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [881701277] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 11:59:05,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-02-20 11:59:05,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2024-02-20 11:59:05,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465722160] [2024-02-20 11:59:05,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:59:05,122 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-20 11:59:05,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:59:05,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-20 11:59:05,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2024-02-20 11:59:05,127 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 46 [2024-02-20 11:59:05,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 713 transitions, 7152 flow. Second operand has 8 states, 8 states have (on average 17.875) internal successors, (143), 8 states have internal predecessors, (143), 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) [2024-02-20 11:59:05,128 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:59:05,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 46 [2024-02-20 11:59:05,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:59:07,333 INFO L124 PetriNetUnfolderBase]: 9452/15020 cut-off events. [2024-02-20 11:59:07,333 INFO L125 PetriNetUnfolderBase]: For 34053/34437 co-relation queries the response was YES. [2024-02-20 11:59:07,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79202 conditions, 15020 events. 9452/15020 cut-off events. For 34053/34437 co-relation queries the response was YES. Maximal size of possible extension queue 426. Compared 97462 event pairs, 553 based on Foata normal form. 2/14942 useless extension candidates. Maximal degree in co-relation 77695. Up to 11892 conditions per place. [2024-02-20 11:59:07,439 INFO L140 encePairwiseOnDemand]: 38/46 looper letters, 587 selfloop transitions, 74 changer transitions 197/885 dead transitions. [2024-02-20 11:59:07,440 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 885 transitions, 10652 flow [2024-02-20 11:59:07,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-02-20 11:59:07,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-02-20 11:59:07,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 295 transitions. [2024-02-20 11:59:07,442 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5830039525691699 [2024-02-20 11:59:07,444 INFO L308 CegarLoopForPetriNet]: 51 programPoint places, 38 predicate places. [2024-02-20 11:59:07,446 INFO L507 AbstractCegarLoop]: Abstraction has has 89 places, 885 transitions, 10652 flow [2024-02-20 11:59:07,447 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.875) internal successors, (143), 8 states have internal predecessors, (143), 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) [2024-02-20 11:59:07,447 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:59:07,447 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:59:07,465 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-02-20 11:59:07,662 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:59:07,663 INFO L432 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)] === [2024-02-20 11:59:07,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:59:07,663 INFO L85 PathProgramCache]: Analyzing trace with hash -45473838, now seen corresponding path program 5 times [2024-02-20 11:59:07,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:59:07,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801782560] [2024-02-20 11:59:07,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:59:07,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:59:07,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:59:08,105 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:59:08,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:59:08,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801782560] [2024-02-20 11:59:08,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801782560] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:59:08,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1114686835] [2024-02-20 11:59:08,106 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-02-20 11:59:08,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:59:08,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:59:08,108 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) [2024-02-20 11:59:08,123 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-02-20 11:59:08,210 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-20 11:59:08,210 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:59:08,212 INFO L262 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 24 conjunts are in the unsatisfiable core [2024-02-20 11:59:08,214 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:59:08,825 INFO L173 IndexEqualityManager]: detected equality via solver [2024-02-20 11:59:08,827 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-20 11:59:08,828 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 15 [2024-02-20 11:59:08,881 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:59:08,882 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:59:09,086 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-20 11:59:09,086 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 26 [2024-02-20 11:59:09,309 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:59:09,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1114686835] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 11:59:09,309 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 11:59:09,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 27 [2024-02-20 11:59:09,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719364252] [2024-02-20 11:59:09,310 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 11:59:09,311 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-02-20 11:59:09,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:59:09,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-02-20 11:59:09,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=621, Unknown=0, NotChecked=0, Total=756 [2024-02-20 11:59:09,323 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 46 [2024-02-20 11:59:09,324 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 885 transitions, 10652 flow. Second operand has 28 states, 28 states have (on average 17.035714285714285) internal successors, (477), 28 states have internal predecessors, (477), 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) [2024-02-20 11:59:09,324 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:59:09,324 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 46 [2024-02-20 11:59:09,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:59:18,401 INFO L124 PetriNetUnfolderBase]: 35678/57062 cut-off events. [2024-02-20 11:59:18,401 INFO L125 PetriNetUnfolderBase]: For 195444/196232 co-relation queries the response was YES. [2024-02-20 11:59:18,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 351562 conditions, 57062 events. 35678/57062 cut-off events. For 195444/196232 co-relation queries the response was YES. Maximal size of possible extension queue 2135. Compared 461272 event pairs, 1452 based on Foata normal form. 52/57024 useless extension candidates. Maximal degree in co-relation 254332. Up to 46248 conditions per place. [2024-02-20 11:59:18,955 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 1954 selfloop transitions, 421 changer transitions 2596/4998 dead transitions. [2024-02-20 11:59:18,956 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 4998 transitions, 71211 flow [2024-02-20 11:59:18,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-02-20 11:59:18,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2024-02-20 11:59:18,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 858 transitions. [2024-02-20 11:59:18,959 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5828804347826086 [2024-02-20 11:59:18,961 INFO L308 CegarLoopForPetriNet]: 51 programPoint places, 69 predicate places. [2024-02-20 11:59:18,961 INFO L507 AbstractCegarLoop]: Abstraction has has 120 places, 4998 transitions, 71211 flow [2024-02-20 11:59:18,963 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 17.035714285714285) internal successors, (477), 28 states have internal predecessors, (477), 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) [2024-02-20 11:59:18,963 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:59:18,963 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:59:18,982 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-02-20 11:59:19,178 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:59:19,179 INFO L432 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)] === [2024-02-20 11:59:19,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:59:19,179 INFO L85 PathProgramCache]: Analyzing trace with hash -1713149066, now seen corresponding path program 6 times [2024-02-20 11:59:19,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:59:19,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780564117] [2024-02-20 11:59:19,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:59:19,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:59:19,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:59:19,631 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:59:19,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:59:19,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780564117] [2024-02-20 11:59:19,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780564117] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:59:19,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1876629506] [2024-02-20 11:59:19,633 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-02-20 11:59:19,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:59:19,633 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:59:19,634 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) [2024-02-20 11:59:19,649 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-02-20 11:59:19,750 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-02-20 11:59:19,750 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:59:19,752 INFO L262 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 14 conjunts are in the unsatisfiable core [2024-02-20 11:59:19,754 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:59:19,925 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-20 11:59:19,926 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2024-02-20 11:59:19,936 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-20 11:59:19,936 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-02-20 11:59:19,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1876629506] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 11:59:19,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-02-20 11:59:19,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2024-02-20 11:59:19,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930309780] [2024-02-20 11:59:19,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:59:19,937 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-20 11:59:19,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:59:19,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-20 11:59:19,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2024-02-20 11:59:19,945 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 46 [2024-02-20 11:59:19,945 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 4998 transitions, 71211 flow. Second operand has 8 states, 8 states have (on average 17.875) internal successors, (143), 8 states have internal predecessors, (143), 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) [2024-02-20 11:59:19,945 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:59:19,945 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 46 [2024-02-20 11:59:19,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:59:48,193 INFO L124 PetriNetUnfolderBase]: 39601/63536 cut-off events. [2024-02-20 11:59:48,193 INFO L125 PetriNetUnfolderBase]: For 310454/311426 co-relation queries the response was YES. [2024-02-20 11:59:48,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 444723 conditions, 63536 events. 39601/63536 cut-off events. For 310454/311426 co-relation queries the response was YES. Maximal size of possible extension queue 2488. Compared 524941 event pairs, 1516 based on Foata normal form. 8/63454 useless extension candidates. Maximal degree in co-relation 322115. Up to 51622 conditions per place. [2024-02-20 11:59:48,621 INFO L140 encePairwiseOnDemand]: 38/46 looper letters, 2467 selfloop transitions, 264 changer transitions 3284/6042 dead transitions. [2024-02-20 11:59:48,621 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 6042 transitions, 98247 flow [2024-02-20 11:59:48,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-02-20 11:59:48,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-02-20 11:59:48,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 316 transitions. [2024-02-20 11:59:48,623 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.572463768115942 [2024-02-20 11:59:48,623 INFO L308 CegarLoopForPetriNet]: 51 programPoint places, 80 predicate places. [2024-02-20 11:59:48,623 INFO L507 AbstractCegarLoop]: Abstraction has has 131 places, 6042 transitions, 98247 flow [2024-02-20 11:59:48,624 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.875) internal successors, (143), 8 states have internal predecessors, (143), 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) [2024-02-20 11:59:48,624 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:59:48,624 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:59:48,636 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-02-20 11:59:48,828 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:59:48,829 INFO L432 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)] === [2024-02-20 11:59:48,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:59:48,829 INFO L85 PathProgramCache]: Analyzing trace with hash -1601994600, now seen corresponding path program 7 times [2024-02-20 11:59:48,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:59:48,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842622599] [2024-02-20 11:59:48,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:59:48,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:59:48,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:59:49,293 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:59:49,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:59:49,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842622599] [2024-02-20 11:59:49,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842622599] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:59:49,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1251721093] [2024-02-20 11:59:49,294 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-02-20 11:59:49,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:59:49,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:59:49,295 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) [2024-02-20 11:59:49,297 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-02-20 11:59:49,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:59:49,417 INFO L262 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 28 conjunts are in the unsatisfiable core [2024-02-20 11:59:49,423 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:59:49,454 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-02-20 11:59:49,897 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:59:49,897 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:59:50,852 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 96 treesize of output 88 [2024-02-20 11:59:50,880 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-20 11:59:50,880 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 112 treesize of output 112 [2024-02-20 11:59:51,321 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:59:51,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1251721093] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 11:59:51,322 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 11:59:51,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 28 [2024-02-20 11:59:51,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842352208] [2024-02-20 11:59:51,322 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 11:59:51,323 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-02-20 11:59:51,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:59:51,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-02-20 11:59:51,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=703, Unknown=0, NotChecked=0, Total=812 [2024-02-20 11:59:51,447 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 46 [2024-02-20 11:59:51,448 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 6042 transitions, 98247 flow. Second operand has 29 states, 29 states have (on average 16.93103448275862) internal successors, (491), 29 states have internal predecessors, (491), 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) [2024-02-20 11:59:51,448 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:59:51,448 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 46 [2024-02-20 11:59:51,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand