./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/parallel-parallel-sum-1.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-parallel-sum-1.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 54b834084fe1393c06cef2b14fb31f788537bd44a8744d5b4241cffc72e1d744 --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 12:03:48,639 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-20 12:03:48,702 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-20 12:03:48,706 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-20 12:03:48,707 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-20 12:03:48,730 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-20 12:03:48,731 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-20 12:03:48,731 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-20 12:03:48,732 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-20 12:03:48,735 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-20 12:03:48,735 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-20 12:03:48,736 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-20 12:03:48,736 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-20 12:03:48,737 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-20 12:03:48,738 INFO L153 SettingsManager]: * Use SBE=true [2024-02-20 12:03:48,738 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-20 12:03:48,738 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-20 12:03:48,738 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-20 12:03:48,738 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-20 12:03:48,739 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-20 12:03:48,739 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-20 12:03:48,739 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-20 12:03:48,739 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-20 12:03:48,740 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-20 12:03:48,740 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-20 12:03:48,740 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-20 12:03:48,740 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-20 12:03:48,740 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-20 12:03:48,741 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-20 12:03:48,741 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-20 12:03:48,742 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-20 12:03:48,742 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-20 12:03:48,742 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-20 12:03:48,742 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-20 12:03:48,742 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-20 12:03:48,743 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-20 12:03:48,743 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-20 12:03:48,743 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-20 12:03:48,743 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-20 12:03:48,743 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-20 12:03:48,744 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-20 12:03:48,744 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-20 12:03:48,744 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-20 12:03:48,744 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 54b834084fe1393c06cef2b14fb31f788537bd44a8744d5b4241cffc72e1d744 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All [2024-02-20 12:03:48,958 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-20 12:03:48,981 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-20 12:03:48,983 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-20 12:03:48,983 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-20 12:03:48,985 INFO L274 PluginConnector]: CDTParser initialized [2024-02-20 12:03:48,986 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-parallel-sum-1.wvr.c [2024-02-20 12:03:50,019 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-20 12:03:50,185 INFO L384 CDTParser]: Found 1 translation units. [2024-02-20 12:03:50,186 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-parallel-sum-1.wvr.c [2024-02-20 12:03:50,191 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64dae374b/5fda51697b824d859fea524b0d328aa8/FLAGd82f0a4bf [2024-02-20 12:03:50,203 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64dae374b/5fda51697b824d859fea524b0d328aa8 [2024-02-20 12:03:50,205 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-20 12:03:50,206 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-02-20 12:03:50,208 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-20 12:03:50,208 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-20 12:03:50,215 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-20 12:03:50,216 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 12:03:50" (1/1) ... [2024-02-20 12:03:50,217 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b6b2c6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:03:50, skipping insertion in model container [2024-02-20 12:03:50,217 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 12:03:50" (1/1) ... [2024-02-20 12:03:50,236 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-02-20 12:03:50,425 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-parallel-sum-1.wvr.c[3642,3655] [2024-02-20 12:03:50,441 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-20 12:03:50,448 INFO L202 MainTranslator]: Completed pre-run [2024-02-20 12:03:50,489 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-parallel-sum-1.wvr.c[3642,3655] [2024-02-20 12:03:50,493 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-20 12:03:50,510 INFO L206 MainTranslator]: Completed translation [2024-02-20 12:03:50,510 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:03:50 WrapperNode [2024-02-20 12:03:50,510 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-20 12:03:50,511 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-20 12:03:50,511 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-20 12:03:50,512 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-20 12:03:50,517 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:03:50" (1/1) ... [2024-02-20 12:03:50,523 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:03:50" (1/1) ... [2024-02-20 12:03:50,549 INFO L138 Inliner]: procedures = 27, calls = 68, calls flagged for inlining = 18, calls inlined = 24, statements flattened = 311 [2024-02-20 12:03:50,549 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-20 12:03:50,550 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-20 12:03:50,550 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-20 12:03:50,550 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-20 12:03:50,558 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:03:50" (1/1) ... [2024-02-20 12:03:50,558 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:03:50" (1/1) ... [2024-02-20 12:03:50,573 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:03:50" (1/1) ... [2024-02-20 12:03:50,592 INFO L175 MemorySlicer]: Split 15 memory accesses to 6 slices as follows [2, 2, 5, 2, 2, 2]. 33 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0, 0]. The 5 writes are split as follows [0, 1, 1, 1, 1, 1]. [2024-02-20 12:03:50,604 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:03:50" (1/1) ... [2024-02-20 12:03:50,605 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:03:50" (1/1) ... [2024-02-20 12:03:50,611 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:03:50" (1/1) ... [2024-02-20 12:03:50,622 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:03:50" (1/1) ... [2024-02-20 12:03:50,624 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:03:50" (1/1) ... [2024-02-20 12:03:50,625 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:03:50" (1/1) ... [2024-02-20 12:03:50,627 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-20 12:03:50,635 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-20 12:03:50,636 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-20 12:03:50,636 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-20 12:03:50,636 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:03:50" (1/1) ... [2024-02-20 12:03:50,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-20 12:03:50,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:03:50,665 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 12:03:50,693 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 12:03:50,720 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-20 12:03:50,720 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-20 12:03:50,720 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-20 12:03:50,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-20 12:03:50,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-20 12:03:50,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-02-20 12:03:50,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-02-20 12:03:50,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-02-20 12:03:50,723 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-02-20 12:03:50,723 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-02-20 12:03:50,723 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-02-20 12:03:50,723 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-02-20 12:03:50,723 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-02-20 12:03:50,723 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-02-20 12:03:50,724 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-02-20 12:03:50,724 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-02-20 12:03:50,732 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-02-20 12:03:50,732 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-02-20 12:03:50,732 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-02-20 12:03:50,732 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-02-20 12:03:50,733 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-02-20 12:03:50,733 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-02-20 12:03:50,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-20 12:03:50,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-20 12:03:50,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-20 12:03:50,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-02-20 12:03:50,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-02-20 12:03:50,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-02-20 12:03:50,735 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-02-20 12:03:50,735 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-02-20 12:03:50,735 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-02-20 12:03:50,735 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-20 12:03:50,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-20 12:03:50,736 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-20 12:03:50,737 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 12:03:50,832 INFO L244 CfgBuilder]: Building ICFG [2024-02-20 12:03:50,834 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-20 12:03:51,130 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-20 12:03:51,131 INFO L293 CfgBuilder]: Performing block encoding [2024-02-20 12:03:51,489 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-20 12:03:51,489 INFO L320 CfgBuilder]: Removed 5 assume(true) statements. [2024-02-20 12:03:51,490 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 12:03:51 BoogieIcfgContainer [2024-02-20 12:03:51,490 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-20 12:03:51,492 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-20 12:03:51,492 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-20 12:03:51,495 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-20 12:03:51,495 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.02 12:03:50" (1/3) ... [2024-02-20 12:03:51,496 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27e07a51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 12:03:51, skipping insertion in model container [2024-02-20 12:03:51,496 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:03:50" (2/3) ... [2024-02-20 12:03:51,496 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27e07a51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 12:03:51, skipping insertion in model container [2024-02-20 12:03:51,496 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 12:03:51" (3/3) ... [2024-02-20 12:03:51,497 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-parallel-sum-1.wvr.c [2024-02-20 12:03:51,511 INFO L221 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-20 12:03:51,512 INFO L180 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-02-20 12:03:51,512 INFO L635 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-20 12:03:51,577 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-02-20 12:03:51,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 57 places, 53 transitions, 134 flow [2024-02-20 12:03:51,650 INFO L124 PetriNetUnfolderBase]: 9/49 cut-off events. [2024-02-20 12:03:51,650 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-02-20 12:03:51,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66 conditions, 49 events. 9/49 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 68 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2024-02-20 12:03:51,654 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 53 transitions, 134 flow [2024-02-20 12:03:51,658 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 52 places, 48 transitions, 120 flow [2024-02-20 12:03:51,669 INFO L368 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-20 12:03:51,675 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;@7e93ffaf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-20 12:03:51,675 INFO L370 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-02-20 12:03:51,685 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-20 12:03:51,686 INFO L124 PetriNetUnfolderBase]: 9/47 cut-off events. [2024-02-20 12:03:51,686 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-02-20 12:03:51,686 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:03:51,687 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] [2024-02-20 12:03:51,687 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 2 more)] === [2024-02-20 12:03:51,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:03:51,693 INFO L85 PathProgramCache]: Analyzing trace with hash 1123663423, now seen corresponding path program 1 times [2024-02-20 12:03:51,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:03:51,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339319813] [2024-02-20 12:03:51,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:03:51,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:03:51,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:03:52,026 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 12:03:52,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:03:52,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339319813] [2024-02-20 12:03:52,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339319813] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 12:03:52,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-20 12:03:52,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-20 12:03:52,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146323000] [2024-02-20 12:03:52,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 12:03:52,037 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-02-20 12:03:52,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:03:52,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-02-20 12:03:52,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-02-20 12:03:52,064 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 53 [2024-02-20 12:03:52,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 48 transitions, 120 flow. Second operand has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 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 12:03:52,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:03:52,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 53 [2024-02-20 12:03:52,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:03:52,782 INFO L124 PetriNetUnfolderBase]: 6097/8066 cut-off events. [2024-02-20 12:03:52,782 INFO L125 PetriNetUnfolderBase]: For 414/414 co-relation queries the response was YES. [2024-02-20 12:03:52,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16511 conditions, 8066 events. 6097/8066 cut-off events. For 414/414 co-relation queries the response was YES. Maximal size of possible extension queue 482. Compared 39487 event pairs, 4752 based on Foata normal form. 1344/8046 useless extension candidates. Maximal degree in co-relation 13994. Up to 7972 conditions per place. [2024-02-20 12:03:52,823 INFO L140 encePairwiseOnDemand]: 49/53 looper letters, 39 selfloop transitions, 0 changer transitions 0/44 dead transitions. [2024-02-20 12:03:52,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 44 transitions, 190 flow [2024-02-20 12:03:52,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-02-20 12:03:52,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-02-20 12:03:52,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 61 transitions. [2024-02-20 12:03:52,832 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5754716981132075 [2024-02-20 12:03:52,836 INFO L308 CegarLoopForPetriNet]: 52 programPoint places, 1 predicate places. [2024-02-20 12:03:52,836 INFO L507 AbstractCegarLoop]: Abstraction has has 53 places, 44 transitions, 190 flow [2024-02-20 12:03:52,837 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 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 12:03:52,837 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:03:52,837 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] [2024-02-20 12:03:52,837 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-20 12:03:52,838 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 2 more)] === [2024-02-20 12:03:52,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:03:52,838 INFO L85 PathProgramCache]: Analyzing trace with hash 137506793, now seen corresponding path program 1 times [2024-02-20 12:03:52,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:03:52,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353671664] [2024-02-20 12:03:52,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:03:52,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:03:52,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:03:52,962 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 12:03:52,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:03:52,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353671664] [2024-02-20 12:03:52,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353671664] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 12:03:52,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-20 12:03:52,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-20 12:03:52,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399751136] [2024-02-20 12:03:52,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 12:03:52,967 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-20 12:03:52,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:03:52,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-20 12:03:52,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-20 12:03:52,969 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 53 [2024-02-20 12:03:52,969 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 44 transitions, 190 flow. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:03:52,969 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:03:52,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 53 [2024-02-20 12:03:52,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:03:54,265 INFO L124 PetriNetUnfolderBase]: 12192/16344 cut-off events. [2024-02-20 12:03:54,265 INFO L125 PetriNetUnfolderBase]: For 1140/1260 co-relation queries the response was YES. [2024-02-20 12:03:54,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49159 conditions, 16344 events. 12192/16344 cut-off events. For 1140/1260 co-relation queries the response was YES. Maximal size of possible extension queue 793. Compared 91140 event pairs, 4752 based on Foata normal form. 1/13629 useless extension candidates. Maximal degree in co-relation 41796. Up to 15938 conditions per place. [2024-02-20 12:03:54,372 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 67 selfloop transitions, 5 changer transitions 1/78 dead transitions. [2024-02-20 12:03:54,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 78 transitions, 493 flow [2024-02-20 12:03:54,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-20 12:03:54,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-20 12:03:54,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 101 transitions. [2024-02-20 12:03:54,375 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6352201257861635 [2024-02-20 12:03:54,377 INFO L308 CegarLoopForPetriNet]: 52 programPoint places, 3 predicate places. [2024-02-20 12:03:54,377 INFO L507 AbstractCegarLoop]: Abstraction has has 55 places, 78 transitions, 493 flow [2024-02-20 12:03:54,379 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:03:54,379 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:03:54,380 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:03:54,380 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-20 12:03:54,381 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 2 more)] === [2024-02-20 12:03:54,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:03:54,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1893625027, now seen corresponding path program 1 times [2024-02-20 12:03:54,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:03:54,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190023596] [2024-02-20 12:03:54,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:03:54,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:03:54,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:03:54,577 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:03:54,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:03:54,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190023596] [2024-02-20 12:03:54,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190023596] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 12:03:54,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-20 12:03:54,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-20 12:03:54,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763617968] [2024-02-20 12:03:54,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 12:03:54,580 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-20 12:03:54,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:03:54,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-20 12:03:54,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-20 12:03:54,582 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 53 [2024-02-20 12:03:54,582 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 78 transitions, 493 flow. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 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 12:03:54,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:03:54,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 53 [2024-02-20 12:03:54,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:03:56,620 INFO L124 PetriNetUnfolderBase]: 19167/26109 cut-off events. [2024-02-20 12:03:56,620 INFO L125 PetriNetUnfolderBase]: For 3627/3783 co-relation queries the response was YES. [2024-02-20 12:03:56,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103863 conditions, 26109 events. 19167/26109 cut-off events. For 3627/3783 co-relation queries the response was YES. Maximal size of possible extension queue 1291. Compared 159674 event pairs, 7813 based on Foata normal form. 1079/22495 useless extension candidates. Maximal degree in co-relation 55386. Up to 25397 conditions per place. [2024-02-20 12:03:56,759 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 71 selfloop transitions, 2 changer transitions 59/137 dead transitions. [2024-02-20 12:03:56,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 137 transitions, 1150 flow [2024-02-20 12:03:56,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-20 12:03:56,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-20 12:03:56,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 111 transitions. [2024-02-20 12:03:56,764 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5235849056603774 [2024-02-20 12:03:56,765 INFO L308 CegarLoopForPetriNet]: 52 programPoint places, 6 predicate places. [2024-02-20 12:03:56,765 INFO L507 AbstractCegarLoop]: Abstraction has has 58 places, 137 transitions, 1150 flow [2024-02-20 12:03:56,766 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 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 12:03:56,766 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:03:56,766 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:03:56,766 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-02-20 12:03:56,766 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 2 more)] === [2024-02-20 12:03:56,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:03:56,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1253101347, now seen corresponding path program 1 times [2024-02-20 12:03:56,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:03:56,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850239709] [2024-02-20 12:03:56,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:03:56,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:03:56,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:03:56,907 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:03:56,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:03:56,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850239709] [2024-02-20 12:03:56,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850239709] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:03:56,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [522788652] [2024-02-20 12:03:56,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:03:56,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:03:56,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:03:56,910 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 12:03:56,927 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 12:03:57,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:03:57,191 INFO L262 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 7 conjunts are in the unsatisfiable core [2024-02-20 12:03:57,195 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:03:57,265 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:03:57,265 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:03:57,302 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:03:57,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [522788652] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:03:57,303 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:03:57,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-02-20 12:03:57,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779149843] [2024-02-20 12:03:57,303 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:03:57,304 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-20 12:03:57,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:03:57,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-20 12:03:57,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-02-20 12:03:57,305 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 53 [2024-02-20 12:03:57,306 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 137 transitions, 1150 flow. Second operand has 10 states, 10 states have (on average 13.2) internal successors, (132), 10 states have internal predecessors, (132), 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 12:03:57,306 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:03:57,306 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 53 [2024-02-20 12:03:57,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:04:00,407 INFO L124 PetriNetUnfolderBase]: 26142/35876 cut-off events. [2024-02-20 12:04:00,407 INFO L125 PetriNetUnfolderBase]: For 8434/8650 co-relation queries the response was YES. [2024-02-20 12:04:00,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177491 conditions, 35876 events. 26142/35876 cut-off events. For 8434/8650 co-relation queries the response was YES. Maximal size of possible extension queue 1747. Compared 232325 event pairs, 10874 based on Foata normal form. 1078/30275 useless extension candidates. Maximal degree in co-relation 68976. Up to 34857 conditions per place. [2024-02-20 12:04:00,641 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 123 selfloop transitions, 5 changer transitions 64/197 dead transitions. [2024-02-20 12:04:00,642 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 197 transitions, 2053 flow [2024-02-20 12:04:00,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-20 12:04:00,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-20 12:04:00,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 131 transitions. [2024-02-20 12:04:00,643 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4119496855345912 [2024-02-20 12:04:00,644 INFO L308 CegarLoopForPetriNet]: 52 programPoint places, 11 predicate places. [2024-02-20 12:04:00,644 INFO L507 AbstractCegarLoop]: Abstraction has has 63 places, 197 transitions, 2053 flow [2024-02-20 12:04:00,644 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.2) internal successors, (132), 10 states have internal predecessors, (132), 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 12:04:00,644 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:04:00,645 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:04:00,660 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 12:04:00,849 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:04:00,849 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 2 more)] === [2024-02-20 12:04:00,850 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:04:00,850 INFO L85 PathProgramCache]: Analyzing trace with hash -1237762623, now seen corresponding path program 1 times [2024-02-20 12:04:00,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:04:00,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865409476] [2024-02-20 12:04:00,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:04:00,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:04:00,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:04:01,031 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:04:01,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:04:01,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865409476] [2024-02-20 12:04:01,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865409476] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:04:01,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [757990546] [2024-02-20 12:04:01,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:04:01,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:04:01,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:04:01,035 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 12:04:01,036 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 12:04:01,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:04:01,140 INFO L262 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 3 conjunts are in the unsatisfiable core [2024-02-20 12:04:01,142 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:04:01,295 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-20 12:04:01,296 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:04:01,355 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-20 12:04:01,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [757990546] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:04:01,356 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:04:01,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-02-20 12:04:01,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216140525] [2024-02-20 12:04:01,357 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:04:01,360 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-20 12:04:01,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:04:01,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-20 12:04:01,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-02-20 12:04:01,362 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 53 [2024-02-20 12:04:01,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 197 transitions, 2053 flow. Second operand has 9 states, 9 states have (on average 18.77777777777778) internal successors, (169), 9 states have internal predecessors, (169), 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 12:04:01,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:04:01,363 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 53 [2024-02-20 12:04:01,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:04:05,323 INFO L124 PetriNetUnfolderBase]: 35462/48124 cut-off events. [2024-02-20 12:04:05,324 INFO L125 PetriNetUnfolderBase]: For 16915/17707 co-relation queries the response was YES. [2024-02-20 12:04:05,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 284955 conditions, 48124 events. 35462/48124 cut-off events. For 16915/17707 co-relation queries the response was YES. Maximal size of possible extension queue 1721. Compared 304985 event pairs, 5939 based on Foata normal form. 743/40180 useless extension candidates. Maximal degree in co-relation 211368. Up to 46800 conditions per place. [2024-02-20 12:04:05,635 INFO L140 encePairwiseOnDemand]: 45/53 looper letters, 257 selfloop transitions, 34 changer transitions 76/372 dead transitions. [2024-02-20 12:04:05,635 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 372 transitions, 4615 flow [2024-02-20 12:04:05,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-02-20 12:04:05,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-02-20 12:04:05,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 325 transitions. [2024-02-20 12:04:05,637 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5574614065180102 [2024-02-20 12:04:05,639 INFO L308 CegarLoopForPetriNet]: 52 programPoint places, 21 predicate places. [2024-02-20 12:04:05,639 INFO L507 AbstractCegarLoop]: Abstraction has has 73 places, 372 transitions, 4615 flow [2024-02-20 12:04:05,639 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 18.77777777777778) internal successors, (169), 9 states have internal predecessors, (169), 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 12:04:05,639 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:04:05,640 INFO L234 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:04:05,650 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-02-20 12:04:05,851 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:04:05,851 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 2 more)] === [2024-02-20 12:04:05,852 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:04:05,852 INFO L85 PathProgramCache]: Analyzing trace with hash -1593537101, now seen corresponding path program 2 times [2024-02-20 12:04:05,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:04:05,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140034882] [2024-02-20 12:04:05,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:04:05,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:04:05,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:04:05,992 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-20 12:04:05,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:04:05,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140034882] [2024-02-20 12:04:05,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140034882] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 12:04:05,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-20 12:04:05,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-20 12:04:05,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449013389] [2024-02-20 12:04:05,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 12:04:05,996 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-20 12:04:05,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:04:05,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-20 12:04:05,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-02-20 12:04:05,999 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 53 [2024-02-20 12:04:05,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 372 transitions, 4615 flow. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 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 12:04:05,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:04:05,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 53 [2024-02-20 12:04:05,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:04:13,633 INFO L124 PetriNetUnfolderBase]: 53487/72532 cut-off events. [2024-02-20 12:04:13,633 INFO L125 PetriNetUnfolderBase]: For 38636/39106 co-relation queries the response was YES. [2024-02-20 12:04:13,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 498251 conditions, 72532 events. 53487/72532 cut-off events. For 38636/39106 co-relation queries the response was YES. Maximal size of possible extension queue 2542. Compared 477416 event pairs, 6029 based on Foata normal form. 50/59974 useless extension candidates. Maximal degree in co-relation 387501. Up to 70278 conditions per place. [2024-02-20 12:04:14,360 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 400 selfloop transitions, 33 changer transitions 78/516 dead transitions. [2024-02-20 12:04:14,361 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 516 transitions, 7422 flow [2024-02-20 12:04:14,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-20 12:04:14,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-20 12:04:14,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 185 transitions. [2024-02-20 12:04:14,362 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6981132075471698 [2024-02-20 12:04:14,364 INFO L308 CegarLoopForPetriNet]: 52 programPoint places, 25 predicate places. [2024-02-20 12:04:14,364 INFO L507 AbstractCegarLoop]: Abstraction has has 77 places, 516 transitions, 7422 flow [2024-02-20 12:04:14,365 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 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 12:04:14,365 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:04:14,365 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:04:14,365 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-02-20 12:04:14,365 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 2 more)] === [2024-02-20 12:04:14,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:04:14,366 INFO L85 PathProgramCache]: Analyzing trace with hash 40996989, now seen corresponding path program 1 times [2024-02-20 12:04:14,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:04:14,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615439821] [2024-02-20 12:04:14,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:04:14,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:04:14,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:04:15,249 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-20 12:04:15,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:04:15,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615439821] [2024-02-20 12:04:15,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615439821] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:04:15,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [674114434] [2024-02-20 12:04:15,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:04:15,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:04:15,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:04:15,265 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 12:04:15,297 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 12:04:15,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:04:15,403 INFO L262 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 29 conjunts are in the unsatisfiable core [2024-02-20 12:04:15,405 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:04:15,741 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2024-02-20 12:04:15,821 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:04:15,821 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:04:16,096 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-20 12:04:16,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [674114434] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:04:16,097 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:04:16,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 7] total 21 [2024-02-20 12:04:16,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856286861] [2024-02-20 12:04:16,097 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:04:16,098 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-02-20 12:04:16,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:04:16,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-02-20 12:04:16,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=335, Unknown=0, NotChecked=0, Total=420 [2024-02-20 12:04:16,099 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 53 [2024-02-20 12:04:16,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 516 transitions, 7422 flow. Second operand has 21 states, 21 states have (on average 13.761904761904763) internal successors, (289), 21 states have internal predecessors, (289), 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 12:04:16,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:04:16,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 53 [2024-02-20 12:04:16,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:04:36,516 INFO L124 PetriNetUnfolderBase]: 102693/139180 cut-off events. [2024-02-20 12:04:36,516 INFO L125 PetriNetUnfolderBase]: For 108004/108502 co-relation queries the response was YES. [2024-02-20 12:04:36,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1088112 conditions, 139180 events. 102693/139180 cut-off events. For 108004/108502 co-relation queries the response was YES. Maximal size of possible extension queue 5026. Compared 983484 event pairs, 7769 based on Foata normal form. 55/115282 useless extension candidates. Maximal degree in co-relation 877578. Up to 134478 conditions per place. [2024-02-20 12:04:38,391 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 1096 selfloop transitions, 311 changer transitions 101/1513 dead transitions. [2024-02-20 12:04:38,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 1513 transitions, 24789 flow [2024-02-20 12:04:38,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-02-20 12:04:38,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2024-02-20 12:04:38,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 873 transitions. [2024-02-20 12:04:38,394 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5490566037735849 [2024-02-20 12:04:38,395 INFO L308 CegarLoopForPetriNet]: 52 programPoint places, 54 predicate places. [2024-02-20 12:04:38,395 INFO L507 AbstractCegarLoop]: Abstraction has has 106 places, 1513 transitions, 24789 flow [2024-02-20 12:04:38,395 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 13.761904761904763) internal successors, (289), 21 states have internal predecessors, (289), 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 12:04:38,395 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:04:38,396 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:04:38,408 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-02-20 12:04:38,607 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:04:38,607 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 2 more)] === [2024-02-20 12:04:38,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:04:38,608 INFO L85 PathProgramCache]: Analyzing trace with hash -773812207, now seen corresponding path program 2 times [2024-02-20 12:04:38,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:04:38,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585911886] [2024-02-20 12:04:38,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:04:38,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:04:38,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:04:39,234 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:04:39,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:04:39,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585911886] [2024-02-20 12:04:39,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585911886] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:04:39,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [415970395] [2024-02-20 12:04:39,235 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-20 12:04:39,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:04:39,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:04:39,254 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 12:04:39,268 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 12:04:39,373 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-20 12:04:39,373 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:04:39,375 INFO L262 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 28 conjunts are in the unsatisfiable core [2024-02-20 12:04:39,388 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:04:39,575 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 15 treesize of output 7 [2024-02-20 12:04:39,665 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-20 12:04:39,666 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:04:39,826 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-02-20 12:04:39,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [415970395] provided 1 perfect and 1 imperfect interpolant sequences [2024-02-20 12:04:39,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-02-20 12:04:39,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9, 8] total 19 [2024-02-20 12:04:39,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585082573] [2024-02-20 12:04:39,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 12:04:39,826 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-20 12:04:39,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:04:39,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-20 12:04:39,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2024-02-20 12:04:39,827 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 53 [2024-02-20 12:04:39,827 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 1513 transitions, 24789 flow. Second operand has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 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 12:04:39,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:04:39,828 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 53 [2024-02-20 12:04:39,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand