./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 273a578a 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-273a578-m [2024-02-19 14:44:52,424 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-19 14:44:52,497 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-19 14:44:52,508 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-19 14:44:52,508 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-19 14:44:52,540 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-19 14:44:52,540 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-19 14:44:52,540 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-19 14:44:52,541 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-19 14:44:52,544 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-19 14:44:52,545 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-19 14:44:52,545 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-19 14:44:52,545 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-19 14:44:52,546 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-19 14:44:52,546 INFO L153 SettingsManager]: * Use SBE=true [2024-02-19 14:44:52,547 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-19 14:44:52,547 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-19 14:44:52,547 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-19 14:44:52,547 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-19 14:44:52,548 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-19 14:44:52,548 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-19 14:44:52,548 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-19 14:44:52,549 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-19 14:44:52,549 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-19 14:44:52,549 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-19 14:44:52,549 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-19 14:44:52,549 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-19 14:44:52,550 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-19 14:44:52,550 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-19 14:44:52,550 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-19 14:44:52,551 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-19 14:44:52,551 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-19 14:44:52,552 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-19 14:44:52,552 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-19 14:44:52,552 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-19 14:44:52,552 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-19 14:44:52,553 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-19 14:44:52,553 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-19 14:44:52,553 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-19 14:44:52,553 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-19 14:44:52,553 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-19 14:44:52,554 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-19 14:44:52,554 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-19 14:44:52,554 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 54b834084fe1393c06cef2b14fb31f788537bd44a8744d5b4241cffc72e1d744 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All [2024-02-19 14:44:52,831 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-19 14:44:52,853 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-19 14:44:52,855 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-19 14:44:52,856 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-19 14:44:52,857 INFO L274 PluginConnector]: CDTParser initialized [2024-02-19 14:44:52,858 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-parallel-sum-1.wvr.c [2024-02-19 14:44:53,945 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-19 14:44:54,103 INFO L384 CDTParser]: Found 1 translation units. [2024-02-19 14:44:54,103 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-parallel-sum-1.wvr.c [2024-02-19 14:44:54,114 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cdd4685cf/8840b10661814e17bdc5b3e138f20da6/FLAGb7853c382 [2024-02-19 14:44:54,125 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cdd4685cf/8840b10661814e17bdc5b3e138f20da6 [2024-02-19 14:44:54,127 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-19 14:44:54,128 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-02-19 14:44:54,129 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-19 14:44:54,131 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-19 14:44:54,134 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-19 14:44:54,134 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 02:44:54" (1/1) ... [2024-02-19 14:44:54,135 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b267d73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:44:54, skipping insertion in model container [2024-02-19 14:44:54,135 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 02:44:54" (1/1) ... [2024-02-19 14:44:54,156 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-02-19 14:44:54,320 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] [2024-02-19 14:44:54,334 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-19 14:44:54,343 INFO L202 MainTranslator]: Completed pre-run [2024-02-19 14:44:54,380 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] [2024-02-19 14:44:54,383 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-19 14:44:54,404 INFO L206 MainTranslator]: Completed translation [2024-02-19 14:44:54,405 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:44:54 WrapperNode [2024-02-19 14:44:54,405 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-19 14:44:54,406 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-19 14:44:54,406 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-19 14:44:54,406 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-19 14:44:54,411 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:44:54" (1/1) ... [2024-02-19 14:44:54,433 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:44:54" (1/1) ... [2024-02-19 14:44:54,469 INFO L138 Inliner]: procedures = 27, calls = 68, calls flagged for inlining = 18, calls inlined = 24, statements flattened = 311 [2024-02-19 14:44:54,469 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-19 14:44:54,470 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-19 14:44:54,470 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-19 14:44:54,470 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-19 14:44:54,478 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:44:54" (1/1) ... [2024-02-19 14:44:54,478 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:44:54" (1/1) ... [2024-02-19 14:44:54,491 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:44:54" (1/1) ... [2024-02-19 14:44:54,509 INFO L175 MemorySlicer]: Split 15 memory accesses to 6 slices as follows [2, 2, 2, 2, 5, 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]. [2024-02-19 14:44:54,514 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:44:54" (1/1) ... [2024-02-19 14:44:54,515 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:44:54" (1/1) ... [2024-02-19 14:44:54,523 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:44:54" (1/1) ... [2024-02-19 14:44:54,528 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:44:54" (1/1) ... [2024-02-19 14:44:54,532 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:44:54" (1/1) ... [2024-02-19 14:44:54,534 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:44:54" (1/1) ... [2024-02-19 14:44:54,537 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-19 14:44:54,539 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-19 14:44:54,539 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-19 14:44:54,540 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-19 14:44:54,540 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:44:54" (1/1) ... [2024-02-19 14:44:54,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-19 14:44:54,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:44:54,561 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) [2024-02-19 14:44:54,572 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 [2024-02-19 14:44:54,598 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-19 14:44:54,598 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-19 14:44:54,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-19 14:44:54,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-19 14:44:54,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-19 14:44:54,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-02-19 14:44:54,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-02-19 14:44:54,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-02-19 14:44:54,599 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-02-19 14:44:54,599 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-02-19 14:44:54,599 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-02-19 14:44:54,599 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-02-19 14:44:54,600 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-02-19 14:44:54,600 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-02-19 14:44:54,600 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-02-19 14:44:54,600 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-02-19 14:44:54,600 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-02-19 14:44:54,600 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-02-19 14:44:54,601 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-02-19 14:44:54,601 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-02-19 14:44:54,601 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-02-19 14:44:54,601 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-02-19 14:44:54,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-19 14:44:54,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-19 14:44:54,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-19 14:44:54,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-02-19 14:44:54,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-02-19 14:44:54,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-02-19 14:44:54,602 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-02-19 14:44:54,602 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-02-19 14:44:54,602 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-02-19 14:44:54,602 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-19 14:44:54,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-19 14:44:54,603 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-19 14:44:54,604 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-02-19 14:44:54,700 INFO L244 CfgBuilder]: Building ICFG [2024-02-19 14:44:54,702 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-19 14:44:55,007 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-19 14:44:55,007 INFO L293 CfgBuilder]: Performing block encoding [2024-02-19 14:44:55,306 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-19 14:44:55,306 INFO L320 CfgBuilder]: Removed 5 assume(true) statements. [2024-02-19 14:44:55,306 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 02:44:55 BoogieIcfgContainer [2024-02-19 14:44:55,307 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-19 14:44:55,308 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-19 14:44:55,308 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-19 14:44:55,310 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-19 14:44:55,311 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.02 02:44:54" (1/3) ... [2024-02-19 14:44:55,311 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a00ccd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 02:44:55, skipping insertion in model container [2024-02-19 14:44:55,312 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:44:54" (2/3) ... [2024-02-19 14:44:55,313 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a00ccd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 02:44:55, skipping insertion in model container [2024-02-19 14:44:55,313 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 02:44:55" (3/3) ... [2024-02-19 14:44:55,314 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-parallel-sum-1.wvr.c [2024-02-19 14:44:55,327 INFO L221 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-19 14:44:55,328 INFO L180 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-02-19 14:44:55,328 INFO L631 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-19 14:44:55,389 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-02-19 14:44:55,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 57 places, 53 transitions, 134 flow [2024-02-19 14:44:55,455 INFO L124 PetriNetUnfolderBase]: 9/49 cut-off events. [2024-02-19 14:44:55,456 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-02-19 14:44:55,464 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. [2024-02-19 14:44:55,464 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 53 transitions, 134 flow [2024-02-19 14:44:55,467 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 52 places, 48 transitions, 120 flow [2024-02-19 14:44:55,473 INFO L368 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-19 14:44:55,477 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;@46de47be, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-19 14:44:55,477 INFO L370 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-02-19 14:44:55,488 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-19 14:44:55,488 INFO L124 PetriNetUnfolderBase]: 9/47 cut-off events. [2024-02-19 14:44:55,488 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-02-19 14:44:55,489 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:44:55,489 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] [2024-02-19 14:44:55,489 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)] === [2024-02-19 14:44:55,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:44:55,494 INFO L85 PathProgramCache]: Analyzing trace with hash 1123663423, now seen corresponding path program 1 times [2024-02-19 14:44:55,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:44:55,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184067688] [2024-02-19 14:44:55,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:44:55,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:44:55,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:44:55,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:44:55,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:44:55,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184067688] [2024-02-19 14:44:55,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184067688] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:44:55,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 14:44:55,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-19 14:44:55,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581098955] [2024-02-19 14:44:55,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:44:55,728 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-02-19 14:44:55,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:44:55,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-02-19 14:44:55,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-02-19 14:44:55,756 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 53 [2024-02-19 14:44:55,758 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) [2024-02-19 14:44:55,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:44:55,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 53 [2024-02-19 14:44:55,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:44:56,576 INFO L124 PetriNetUnfolderBase]: 6097/8066 cut-off events. [2024-02-19 14:44:56,577 INFO L125 PetriNetUnfolderBase]: For 414/414 co-relation queries the response was YES. [2024-02-19 14:44:56,588 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. [2024-02-19 14:44:56,621 INFO L140 encePairwiseOnDemand]: 49/53 looper letters, 39 selfloop transitions, 0 changer transitions 0/44 dead transitions. [2024-02-19 14:44:56,622 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 44 transitions, 190 flow [2024-02-19 14:44:56,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-02-19 14:44:56,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-02-19 14:44:56,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 61 transitions. [2024-02-19 14:44:56,631 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5754716981132075 [2024-02-19 14:44:56,634 INFO L308 CegarLoopForPetriNet]: 52 programPoint places, 1 predicate places. [2024-02-19 14:44:56,634 INFO L507 AbstractCegarLoop]: Abstraction has has 53 places, 44 transitions, 190 flow [2024-02-19 14:44:56,634 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) [2024-02-19 14:44:56,635 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:44:56,635 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] [2024-02-19 14:44:56,635 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-19 14:44:56,635 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)] === [2024-02-19 14:44:56,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:44:56,636 INFO L85 PathProgramCache]: Analyzing trace with hash 137506793, now seen corresponding path program 1 times [2024-02-19 14:44:56,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:44:56,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954272404] [2024-02-19 14:44:56,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:44:56,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:44:56,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:44:56,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:44:56,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:44:56,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954272404] [2024-02-19 14:44:56,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954272404] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:44:56,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 14:44:56,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-19 14:44:56,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67984090] [2024-02-19 14:44:56,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:44:56,808 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-19 14:44:56,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:44:56,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-19 14:44:56,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-19 14:44:56,810 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 53 [2024-02-19 14:44:56,810 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) [2024-02-19 14:44:56,811 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:44:56,811 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 53 [2024-02-19 14:44:56,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:44:58,027 INFO L124 PetriNetUnfolderBase]: 12192/16344 cut-off events. [2024-02-19 14:44:58,028 INFO L125 PetriNetUnfolderBase]: For 1140/1260 co-relation queries the response was YES. [2024-02-19 14:44:58,044 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. [2024-02-19 14:44:58,131 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 67 selfloop transitions, 5 changer transitions 1/78 dead transitions. [2024-02-19 14:44:58,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 78 transitions, 493 flow [2024-02-19 14:44:58,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-19 14:44:58,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-19 14:44:58,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 101 transitions. [2024-02-19 14:44:58,133 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6352201257861635 [2024-02-19 14:44:58,133 INFO L308 CegarLoopForPetriNet]: 52 programPoint places, 3 predicate places. [2024-02-19 14:44:58,134 INFO L507 AbstractCegarLoop]: Abstraction has has 55 places, 78 transitions, 493 flow [2024-02-19 14:44:58,134 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) [2024-02-19 14:44:58,134 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:44:58,134 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] [2024-02-19 14:44:58,135 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-19 14:44:58,135 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)] === [2024-02-19 14:44:58,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:44:58,135 INFO L85 PathProgramCache]: Analyzing trace with hash -1893625027, now seen corresponding path program 1 times [2024-02-19 14:44:58,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:44:58,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184829599] [2024-02-19 14:44:58,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:44:58,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:44:58,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:44:58,289 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:44:58,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:44:58,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184829599] [2024-02-19 14:44:58,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184829599] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:44:58,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 14:44:58,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-19 14:44:58,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034463811] [2024-02-19 14:44:58,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:44:58,292 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-19 14:44:58,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:44:58,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-19 14:44:58,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-19 14:44:58,295 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 53 [2024-02-19 14:44:58,296 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) [2024-02-19 14:44:58,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:44:58,296 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 53 [2024-02-19 14:44:58,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:45:00,304 INFO L124 PetriNetUnfolderBase]: 19167/26109 cut-off events. [2024-02-19 14:45:00,304 INFO L125 PetriNetUnfolderBase]: For 3627/3783 co-relation queries the response was YES. [2024-02-19 14:45:00,341 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. [2024-02-19 14:45:00,426 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 71 selfloop transitions, 2 changer transitions 59/137 dead transitions. [2024-02-19 14:45:00,426 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 137 transitions, 1150 flow [2024-02-19 14:45:00,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-19 14:45:00,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-19 14:45:00,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 111 transitions. [2024-02-19 14:45:00,430 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5235849056603774 [2024-02-19 14:45:00,431 INFO L308 CegarLoopForPetriNet]: 52 programPoint places, 6 predicate places. [2024-02-19 14:45:00,431 INFO L507 AbstractCegarLoop]: Abstraction has has 58 places, 137 transitions, 1150 flow [2024-02-19 14:45:00,432 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) [2024-02-19 14:45:00,432 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:45:00,432 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] [2024-02-19 14:45:00,432 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-02-19 14:45:00,432 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)] === [2024-02-19 14:45:00,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:45:00,433 INFO L85 PathProgramCache]: Analyzing trace with hash 1253101347, now seen corresponding path program 1 times [2024-02-19 14:45:00,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:45:00,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341199322] [2024-02-19 14:45:00,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:45:00,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:45:00,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:45:00,568 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:45:00,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:45:00,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341199322] [2024-02-19 14:45:00,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341199322] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:45:00,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2054405996] [2024-02-19 14:45:00,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:45:00,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:45:00,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:45:00,574 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) [2024-02-19 14:45:00,575 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-02-19 14:45:00,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:45:00,699 INFO L262 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 7 conjunts are in the unsatisfiable core [2024-02-19 14:45:00,703 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:45:00,797 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:45:00,797 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:45:00,845 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:45:00,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2054405996] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 14:45:00,846 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 14:45:00,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-02-19 14:45:00,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954814936] [2024-02-19 14:45:00,847 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 14:45:00,847 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-19 14:45:00,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:45:00,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-19 14:45:00,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-02-19 14:45:00,848 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 53 [2024-02-19 14:45:00,848 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) [2024-02-19 14:45:00,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:45:00,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 53 [2024-02-19 14:45:00,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:45:03,516 INFO L124 PetriNetUnfolderBase]: 26142/35876 cut-off events. [2024-02-19 14:45:03,516 INFO L125 PetriNetUnfolderBase]: For 8434/8650 co-relation queries the response was YES. [2024-02-19 14:45:03,553 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. [2024-02-19 14:45:03,677 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 123 selfloop transitions, 5 changer transitions 64/197 dead transitions. [2024-02-19 14:45:03,677 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 197 transitions, 2053 flow [2024-02-19 14:45:03,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-19 14:45:03,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-19 14:45:03,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 131 transitions. [2024-02-19 14:45:03,680 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4119496855345912 [2024-02-19 14:45:03,681 INFO L308 CegarLoopForPetriNet]: 52 programPoint places, 11 predicate places. [2024-02-19 14:45:03,682 INFO L507 AbstractCegarLoop]: Abstraction has has 63 places, 197 transitions, 2053 flow [2024-02-19 14:45:03,682 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) [2024-02-19 14:45:03,682 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:45:03,682 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] [2024-02-19 14:45:03,697 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-02-19 14:45:03,897 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 [2024-02-19 14:45:03,898 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)] === [2024-02-19 14:45:03,899 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:45:03,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1237762623, now seen corresponding path program 1 times [2024-02-19 14:45:03,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:45:03,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904872365] [2024-02-19 14:45:03,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:45:03,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:45:03,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:45:04,037 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:45:04,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:45:04,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904872365] [2024-02-19 14:45:04,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904872365] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:45:04,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1563967782] [2024-02-19 14:45:04,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:45:04,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:45:04,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:45:04,039 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) [2024-02-19 14:45:04,066 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-02-19 14:45:04,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:45:04,138 INFO L262 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 3 conjunts are in the unsatisfiable core [2024-02-19 14:45:04,140 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:45:04,283 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-19 14:45:04,283 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:45:04,330 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-19 14:45:04,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1563967782] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 14:45:04,331 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 14:45:04,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-02-19 14:45:04,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507039314] [2024-02-19 14:45:04,331 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 14:45:04,333 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-19 14:45:04,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:45:04,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-19 14:45:04,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-02-19 14:45:04,336 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 53 [2024-02-19 14:45:04,337 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) [2024-02-19 14:45:04,337 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:45:04,337 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 53 [2024-02-19 14:45:04,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:45:08,540 INFO L124 PetriNetUnfolderBase]: 35462/48124 cut-off events. [2024-02-19 14:45:08,540 INFO L125 PetriNetUnfolderBase]: For 16915/17707 co-relation queries the response was YES. [2024-02-19 14:45:08,610 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. [2024-02-19 14:45:08,849 INFO L140 encePairwiseOnDemand]: 45/53 looper letters, 257 selfloop transitions, 34 changer transitions 76/372 dead transitions. [2024-02-19 14:45:08,850 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 372 transitions, 4615 flow [2024-02-19 14:45:08,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-02-19 14:45:08,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-02-19 14:45:08,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 325 transitions. [2024-02-19 14:45:08,851 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5574614065180102 [2024-02-19 14:45:08,854 INFO L308 CegarLoopForPetriNet]: 52 programPoint places, 21 predicate places. [2024-02-19 14:45:08,854 INFO L507 AbstractCegarLoop]: Abstraction has has 73 places, 372 transitions, 4615 flow [2024-02-19 14:45:08,854 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) [2024-02-19 14:45:08,854 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:45:08,854 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] [2024-02-19 14:45:08,881 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-02-19 14:45:09,078 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 [2024-02-19 14:45:09,079 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)] === [2024-02-19 14:45:09,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:45:09,080 INFO L85 PathProgramCache]: Analyzing trace with hash -1593537101, now seen corresponding path program 2 times [2024-02-19 14:45:09,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:45:09,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568981636] [2024-02-19 14:45:09,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:45:09,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:45:09,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:45:09,223 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-19 14:45:09,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:45:09,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568981636] [2024-02-19 14:45:09,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568981636] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:45:09,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 14:45:09,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-19 14:45:09,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255489402] [2024-02-19 14:45:09,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:45:09,229 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-19 14:45:09,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:45:09,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-19 14:45:09,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-02-19 14:45:09,231 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 53 [2024-02-19 14:45:09,232 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) [2024-02-19 14:45:09,232 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:45:09,232 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 53 [2024-02-19 14:45:09,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:45:16,131 INFO L124 PetriNetUnfolderBase]: 53487/72532 cut-off events. [2024-02-19 14:45:16,131 INFO L125 PetriNetUnfolderBase]: For 38636/39106 co-relation queries the response was YES. [2024-02-19 14:45:16,241 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. [2024-02-19 14:45:16,649 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 400 selfloop transitions, 33 changer transitions 78/516 dead transitions. [2024-02-19 14:45:16,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 516 transitions, 7422 flow [2024-02-19 14:45:16,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-19 14:45:16,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-19 14:45:16,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 185 transitions. [2024-02-19 14:45:16,650 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6981132075471698 [2024-02-19 14:45:16,651 INFO L308 CegarLoopForPetriNet]: 52 programPoint places, 25 predicate places. [2024-02-19 14:45:16,651 INFO L507 AbstractCegarLoop]: Abstraction has has 77 places, 516 transitions, 7422 flow [2024-02-19 14:45:16,651 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) [2024-02-19 14:45:16,651 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:45:16,651 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] [2024-02-19 14:45:16,651 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-02-19 14:45:16,652 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)] === [2024-02-19 14:45:16,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:45:16,652 INFO L85 PathProgramCache]: Analyzing trace with hash 40996989, now seen corresponding path program 1 times [2024-02-19 14:45:16,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:45:16,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805206708] [2024-02-19 14:45:16,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:45:16,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:45:16,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:45:17,427 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:45:17,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:45:17,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805206708] [2024-02-19 14:45:17,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805206708] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:45:17,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [136739466] [2024-02-19 14:45:17,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:45:17,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:45:17,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:45:17,433 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) [2024-02-19 14:45:17,447 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-02-19 14:45:17,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:45:17,543 INFO L262 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 29 conjunts are in the unsatisfiable core [2024-02-19 14:45:17,545 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:45:17,996 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 [2024-02-19 14:45:18,071 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:45:18,071 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:45:18,326 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-19 14:45:18,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [136739466] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 14:45:18,327 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 14:45:18,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 7] total 23 [2024-02-19 14:45:18,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350608448] [2024-02-19 14:45:18,327 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 14:45:18,328 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-02-19 14:45:18,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:45:18,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-02-19 14:45:18,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=416, Unknown=0, NotChecked=0, Total=506 [2024-02-19 14:45:18,330 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 53 [2024-02-19 14:45:18,331 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 516 transitions, 7422 flow. Second operand has 23 states, 23 states have (on average 13.391304347826088) internal successors, (308), 23 states have internal predecessors, (308), 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) [2024-02-19 14:45:18,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:45:18,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 53 [2024-02-19 14:45:18,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:45:35,143 INFO L124 PetriNetUnfolderBase]: 102693/139180 cut-off events. [2024-02-19 14:45:35,144 INFO L125 PetriNetUnfolderBase]: For 108004/108502 co-relation queries the response was YES. [2024-02-19 14:45:35,368 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. [2024-02-19 14:45:36,565 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 1096 selfloop transitions, 311 changer transitions 101/1513 dead transitions. [2024-02-19 14:45:36,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 1513 transitions, 24789 flow [2024-02-19 14:45:36,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-02-19 14:45:36,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2024-02-19 14:45:36,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 873 transitions. [2024-02-19 14:45:36,573 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5490566037735849 [2024-02-19 14:45:36,573 INFO L308 CegarLoopForPetriNet]: 52 programPoint places, 54 predicate places. [2024-02-19 14:45:36,573 INFO L507 AbstractCegarLoop]: Abstraction has has 106 places, 1513 transitions, 24789 flow [2024-02-19 14:45:36,574 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 13.391304347826088) internal successors, (308), 23 states have internal predecessors, (308), 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) [2024-02-19 14:45:36,574 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:45:36,574 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] [2024-02-19 14:45:36,586 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-02-19 14:45:36,785 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 [2024-02-19 14:45:36,788 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)] === [2024-02-19 14:45:36,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:45:36,788 INFO L85 PathProgramCache]: Analyzing trace with hash -773812207, now seen corresponding path program 2 times [2024-02-19 14:45:36,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:45:36,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465205504] [2024-02-19 14:45:36,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:45:36,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:45:36,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:45:37,174 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-19 14:45:37,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:45:37,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465205504] [2024-02-19 14:45:37,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465205504] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:45:37,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2114326611] [2024-02-19 14:45:37,175 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-19 14:45:37,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:45:37,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:45:37,177 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) [2024-02-19 14:45:37,178 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-02-19 14:45:37,296 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-19 14:45:37,296 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 14:45:37,297 INFO L262 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 28 conjunts are in the unsatisfiable core [2024-02-19 14:45:37,300 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:45:37,452 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 [2024-02-19 14:45:37,541 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-19 14:45:37,541 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:45:37,668 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-02-19 14:45:37,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2114326611] provided 1 perfect and 1 imperfect interpolant sequences [2024-02-19 14:45:37,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-02-19 14:45:37,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 8] total 18 [2024-02-19 14:45:37,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031673864] [2024-02-19 14:45:37,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:45:37,669 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-19 14:45:37,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:45:37,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-19 14:45:37,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2024-02-19 14:45:37,670 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 53 [2024-02-19 14:45:37,671 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) [2024-02-19 14:45:37,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:45:37,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 53 [2024-02-19 14:45:37,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand