./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/popl20-bad-commit-1.wvr-bad.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/popl20-bad-commit-1.wvr-bad.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 83c7202603a0719c5812e4d7043f4665de4d954c89c656bd6312ac9e8fdcb494 --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 14:46:26,295 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-19 14:46:26,349 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-19 14:46:26,352 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-19 14:46:26,353 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-19 14:46:26,378 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-19 14:46:26,379 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-19 14:46:26,379 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-19 14:46:26,380 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-19 14:46:26,383 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-19 14:46:26,383 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-19 14:46:26,384 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-19 14:46:26,384 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-19 14:46:26,385 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-19 14:46:26,385 INFO L153 SettingsManager]: * Use SBE=true [2024-02-19 14:46:26,386 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-19 14:46:26,386 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-19 14:46:26,386 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-19 14:46:26,386 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-19 14:46:26,387 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-19 14:46:26,387 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-19 14:46:26,387 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-19 14:46:26,388 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-19 14:46:26,388 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-19 14:46:26,388 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-19 14:46:26,388 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-19 14:46:26,388 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-19 14:46:26,389 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-19 14:46:26,389 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-19 14:46:26,389 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-19 14:46:26,390 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-19 14:46:26,390 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-19 14:46:26,391 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-19 14:46:26,391 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-19 14:46:26,391 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-19 14:46:26,391 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-19 14:46:26,392 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-19 14:46:26,392 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-19 14:46:26,392 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-19 14:46:26,392 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-19 14:46:26,393 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-19 14:46:26,393 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-19 14:46:26,393 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-19 14:46:26,393 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 83c7202603a0719c5812e4d7043f4665de4d954c89c656bd6312ac9e8fdcb494 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All [2024-02-19 14:46:26,656 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-19 14:46:26,685 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-19 14:46:26,687 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-19 14:46:26,689 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-19 14:46:26,689 INFO L274 PluginConnector]: CDTParser initialized [2024-02-19 14:46:26,690 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-bad-commit-1.wvr-bad.c [2024-02-19 14:46:27,745 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-19 14:46:27,919 INFO L384 CDTParser]: Found 1 translation units. [2024-02-19 14:46:27,920 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-commit-1.wvr-bad.c [2024-02-19 14:46:27,930 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4856d6f9e/6dfe90bdb5f040989510b199564cf9a6/FLAG81304378b [2024-02-19 14:46:27,944 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4856d6f9e/6dfe90bdb5f040989510b199564cf9a6 [2024-02-19 14:46:27,946 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-19 14:46:27,948 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-02-19 14:46:27,950 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-19 14:46:27,950 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-19 14:46:27,954 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-19 14:46:27,956 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 02:46:27" (1/1) ... [2024-02-19 14:46:27,957 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40df1d8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:46:27, skipping insertion in model container [2024-02-19 14:46:27,957 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 02:46:27" (1/1) ... [2024-02-19 14:46:27,984 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-02-19 14:46:28,169 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/popl20-bad-commit-1.wvr-bad.c[5161,5174] [2024-02-19 14:46:28,179 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-19 14:46:28,190 INFO L202 MainTranslator]: Completed pre-run [2024-02-19 14:46:28,223 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/popl20-bad-commit-1.wvr-bad.c[5161,5174] [2024-02-19 14:46:28,233 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-19 14:46:28,248 INFO L206 MainTranslator]: Completed translation [2024-02-19 14:46:28,248 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:46:28 WrapperNode [2024-02-19 14:46:28,248 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-19 14:46:28,250 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-19 14:46:28,250 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-19 14:46:28,250 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-19 14:46:28,255 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:46:28" (1/1) ... [2024-02-19 14:46:28,273 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:46:28" (1/1) ... [2024-02-19 14:46:28,306 INFO L138 Inliner]: procedures = 25, calls = 68, calls flagged for inlining = 20, calls inlined = 24, statements flattened = 352 [2024-02-19 14:46:28,309 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-19 14:46:28,309 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-19 14:46:28,309 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-19 14:46:28,309 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-19 14:46:28,317 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:46:28" (1/1) ... [2024-02-19 14:46:28,318 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:46:28" (1/1) ... [2024-02-19 14:46:28,332 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:46:28" (1/1) ... [2024-02-19 14:46:28,353 INFO L175 MemorySlicer]: Split 19 memory accesses to 5 slices as follows [2, 2, 2, 11, 2]. 58 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 6 writes are split as follows [0, 1, 1, 3, 1]. [2024-02-19 14:46:28,360 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:46:28" (1/1) ... [2024-02-19 14:46:28,360 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:46:28" (1/1) ... [2024-02-19 14:46:28,367 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:46:28" (1/1) ... [2024-02-19 14:46:28,379 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:46:28" (1/1) ... [2024-02-19 14:46:28,383 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:46:28" (1/1) ... [2024-02-19 14:46:28,396 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:46:28" (1/1) ... [2024-02-19 14:46:28,404 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-19 14:46:28,404 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-19 14:46:28,404 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-19 14:46:28,404 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-19 14:46:28,405 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:46:28" (1/1) ... [2024-02-19 14:46:28,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-19 14:46:28,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:46:28,429 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 14:46:28,432 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 14:46:28,482 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-19 14:46:28,483 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-19 14:46:28,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-19 14:46:28,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-19 14:46:28,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-19 14:46:28,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-02-19 14:46:28,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-02-19 14:46:28,483 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-02-19 14:46:28,484 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-02-19 14:46:28,484 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-02-19 14:46:28,484 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-02-19 14:46:28,484 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-02-19 14:46:28,484 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-02-19 14:46:28,484 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-02-19 14:46:28,484 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-02-19 14:46:28,484 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-02-19 14:46:28,485 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-02-19 14:46:28,485 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-02-19 14:46:28,485 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-19 14:46:28,485 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-19 14:46:28,485 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-19 14:46:28,485 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-02-19 14:46:28,485 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-02-19 14:46:28,485 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-02-19 14:46:28,486 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-02-19 14:46:28,486 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-02-19 14:46:28,486 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-19 14:46:28,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-19 14:46:28,486 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-19 14:46:28,487 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 14:46:28,588 INFO L244 CfgBuilder]: Building ICFG [2024-02-19 14:46:28,590 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-19 14:46:28,969 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-19 14:46:28,977 INFO L293 CfgBuilder]: Performing block encoding [2024-02-19 14:46:29,300 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-19 14:46:29,300 INFO L320 CfgBuilder]: Removed 6 assume(true) statements. [2024-02-19 14:46:29,301 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 02:46:29 BoogieIcfgContainer [2024-02-19 14:46:29,301 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-19 14:46:29,303 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-19 14:46:29,303 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-19 14:46:29,305 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-19 14:46:29,305 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.02 02:46:27" (1/3) ... [2024-02-19 14:46:29,306 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7137d223 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 02:46:29, skipping insertion in model container [2024-02-19 14:46:29,306 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:46:28" (2/3) ... [2024-02-19 14:46:29,308 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7137d223 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 02:46:29, skipping insertion in model container [2024-02-19 14:46:29,308 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 02:46:29" (3/3) ... [2024-02-19 14:46:29,309 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-commit-1.wvr-bad.c [2024-02-19 14:46:29,324 INFO L221 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-19 14:46:29,324 INFO L180 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-02-19 14:46:29,324 INFO L631 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-19 14:46:29,362 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-02-19 14:46:29,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 56 places, 63 transitions, 147 flow [2024-02-19 14:46:29,431 INFO L124 PetriNetUnfolderBase]: 17/60 cut-off events. [2024-02-19 14:46:29,431 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-02-19 14:46:29,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73 conditions, 60 events. 17/60 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 121 event pairs, 0 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 48. Up to 6 conditions per place. [2024-02-19 14:46:29,435 INFO L82 GeneralOperation]: Start removeDead. Operand has 56 places, 63 transitions, 147 flow [2024-02-19 14:46:29,439 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 52 places, 59 transitions, 136 flow [2024-02-19 14:46:29,452 INFO L368 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-19 14:46:29,458 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;@586f68fd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-19 14:46:29,458 INFO L370 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-02-19 14:46:29,478 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-19 14:46:29,479 INFO L124 PetriNetUnfolderBase]: 17/58 cut-off events. [2024-02-19 14:46:29,479 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-02-19 14:46:29,479 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:46:29,480 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] [2024-02-19 14:46:29,480 INFO L432 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 14:46:29,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:46:29,486 INFO L85 PathProgramCache]: Analyzing trace with hash -2126763236, now seen corresponding path program 1 times [2024-02-19 14:46:29,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:46:29,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230154120] [2024-02-19 14:46:29,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:46:29,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:46:29,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:46:29,739 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 14:46:29,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:46:29,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230154120] [2024-02-19 14:46:29,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230154120] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:46:29,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 14:46:29,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-19 14:46:29,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771573025] [2024-02-19 14:46:29,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:46:29,747 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-02-19 14:46:29,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:46:29,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-02-19 14:46:29,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-02-19 14:46:29,803 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 63 [2024-02-19 14:46:29,805 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 59 transitions, 136 flow. Second operand has 2 states, 2 states have (on average 34.0) internal successors, (68), 2 states have internal predecessors, (68), 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 14:46:29,805 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:46:29,805 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 63 [2024-02-19 14:46:29,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:46:30,045 INFO L124 PetriNetUnfolderBase]: 700/983 cut-off events. [2024-02-19 14:46:30,045 INFO L125 PetriNetUnfolderBase]: For 34/34 co-relation queries the response was YES. [2024-02-19 14:46:30,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1949 conditions, 983 events. 700/983 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3630 event pairs, 333 based on Foata normal form. 132/866 useless extension candidates. Maximal degree in co-relation 1640. Up to 899 conditions per place. [2024-02-19 14:46:30,053 INFO L140 encePairwiseOnDemand]: 60/63 looper letters, 36 selfloop transitions, 0 changer transitions 0/56 dead transitions. [2024-02-19 14:46:30,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 56 transitions, 202 flow [2024-02-19 14:46:30,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-02-19 14:46:30,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-02-19 14:46:30,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 85 transitions. [2024-02-19 14:46:30,064 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6746031746031746 [2024-02-19 14:46:30,067 INFO L308 CegarLoopForPetriNet]: 52 programPoint places, 1 predicate places. [2024-02-19 14:46:30,068 INFO L507 AbstractCegarLoop]: Abstraction has has 53 places, 56 transitions, 202 flow [2024-02-19 14:46:30,068 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 34.0) internal successors, (68), 2 states have internal predecessors, (68), 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 14:46:30,068 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:46:30,068 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] [2024-02-19 14:46:30,068 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-19 14:46:30,069 INFO L432 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 14:46:30,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:46:30,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1548690263, now seen corresponding path program 1 times [2024-02-19 14:46:30,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:46:30,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515784533] [2024-02-19 14:46:30,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:46:30,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:46:30,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:46:30,226 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 14:46:30,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:46:30,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515784533] [2024-02-19 14:46:30,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515784533] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:46:30,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 14:46:30,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-19 14:46:30,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516915395] [2024-02-19 14:46:30,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:46:30,228 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-19 14:46:30,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:46:30,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-19 14:46:30,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-19 14:46:30,229 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 63 [2024-02-19 14:46:30,229 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 56 transitions, 202 flow. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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 14:46:30,229 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:46:30,229 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 63 [2024-02-19 14:46:30,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:46:30,495 INFO L124 PetriNetUnfolderBase]: 1422/2250 cut-off events. [2024-02-19 14:46:30,495 INFO L125 PetriNetUnfolderBase]: For 407/663 co-relation queries the response was YES. [2024-02-19 14:46:30,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5954 conditions, 2250 events. 1422/2250 cut-off events. For 407/663 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 11605 event pairs, 333 based on Foata normal form. 1/1714 useless extension candidates. Maximal degree in co-relation 5090. Up to 1788 conditions per place. [2024-02-19 14:46:30,509 INFO L140 encePairwiseOnDemand]: 57/63 looper letters, 57 selfloop transitions, 5 changer transitions 1/83 dead transitions. [2024-02-19 14:46:30,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 83 transitions, 451 flow [2024-02-19 14:46:30,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-19 14:46:30,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-19 14:46:30,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 133 transitions. [2024-02-19 14:46:30,511 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7037037037037037 [2024-02-19 14:46:30,512 INFO L308 CegarLoopForPetriNet]: 52 programPoint places, 3 predicate places. [2024-02-19 14:46:30,512 INFO L507 AbstractCegarLoop]: Abstraction has has 55 places, 83 transitions, 451 flow [2024-02-19 14:46:30,512 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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 14:46:30,512 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:46:30,512 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] [2024-02-19 14:46:30,512 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-19 14:46:30,512 INFO L432 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 14:46:30,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:46:30,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1932773042, now seen corresponding path program 1 times [2024-02-19 14:46:30,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:46:30,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687480977] [2024-02-19 14:46:30,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:46:30,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:46:30,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:46:30,574 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 14:46:30,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:46:30,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687480977] [2024-02-19 14:46:30,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687480977] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:46:30,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 14:46:30,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-19 14:46:30,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850100327] [2024-02-19 14:46:30,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:46:30,575 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-19 14:46:30,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:46:30,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-19 14:46:30,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-19 14:46:30,576 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 63 [2024-02-19 14:46:30,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 83 transitions, 451 flow. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 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 14:46:30,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:46:30,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 63 [2024-02-19 14:46:30,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:46:30,909 INFO L124 PetriNetUnfolderBase]: 2672/4272 cut-off events. [2024-02-19 14:46:30,909 INFO L125 PetriNetUnfolderBase]: For 2095/2639 co-relation queries the response was YES. [2024-02-19 14:46:30,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14509 conditions, 4272 events. 2672/4272 cut-off events. For 2095/2639 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 24980 event pairs, 333 based on Foata normal form. 160/3453 useless extension candidates. Maximal degree in co-relation 12188. Up to 3337 conditions per place. [2024-02-19 14:46:30,987 INFO L140 encePairwiseOnDemand]: 58/63 looper letters, 101 selfloop transitions, 5 changer transitions 2/128 dead transitions. [2024-02-19 14:46:30,987 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 128 transitions, 958 flow [2024-02-19 14:46:30,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-19 14:46:30,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-19 14:46:30,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 131 transitions. [2024-02-19 14:46:30,989 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6931216931216931 [2024-02-19 14:46:30,989 INFO L308 CegarLoopForPetriNet]: 52 programPoint places, 5 predicate places. [2024-02-19 14:46:30,989 INFO L507 AbstractCegarLoop]: Abstraction has has 57 places, 128 transitions, 958 flow [2024-02-19 14:46:30,989 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 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 14:46:30,989 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:46:30,990 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] [2024-02-19 14:46:30,990 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-02-19 14:46:30,990 INFO L432 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 14:46:30,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:46:30,990 INFO L85 PathProgramCache]: Analyzing trace with hash 2034151032, now seen corresponding path program 1 times [2024-02-19 14:46:30,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:46:30,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833123526] [2024-02-19 14:46:30,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:46:30,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:46:31,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:46:31,058 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 14:46:31,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:46:31,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833123526] [2024-02-19 14:46:31,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833123526] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:46:31,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 14:46:31,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-19 14:46:31,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744738529] [2024-02-19 14:46:31,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:46:31,063 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-19 14:46:31,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:46:31,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-19 14:46:31,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-19 14:46:31,066 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 63 [2024-02-19 14:46:31,067 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 128 transitions, 958 flow. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 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 14:46:31,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:46:31,067 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 63 [2024-02-19 14:46:31,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:46:31,916 INFO L124 PetriNetUnfolderBase]: 5096/8504 cut-off events. [2024-02-19 14:46:31,916 INFO L125 PetriNetUnfolderBase]: For 8035/9069 co-relation queries the response was YES. [2024-02-19 14:46:31,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34394 conditions, 8504 events. 5096/8504 cut-off events. For 8035/9069 co-relation queries the response was YES. Maximal size of possible extension queue 444. Compared 58867 event pairs, 333 based on Foata normal form. 186/6698 useless extension candidates. Maximal degree in co-relation 28882. Up to 6369 conditions per place. [2024-02-19 14:46:31,997 INFO L140 encePairwiseOnDemand]: 60/63 looper letters, 193 selfloop transitions, 5 changer transitions 4/222 dead transitions. [2024-02-19 14:46:31,997 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 222 transitions, 2162 flow [2024-02-19 14:46:31,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-19 14:46:31,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-19 14:46:31,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 133 transitions. [2024-02-19 14:46:31,999 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7037037037037037 [2024-02-19 14:46:31,999 INFO L308 CegarLoopForPetriNet]: 52 programPoint places, 7 predicate places. [2024-02-19 14:46:31,999 INFO L507 AbstractCegarLoop]: Abstraction has has 59 places, 222 transitions, 2162 flow [2024-02-19 14:46:31,999 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 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 14:46:32,000 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:46:32,000 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] [2024-02-19 14:46:32,000 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-02-19 14:46:32,000 INFO L432 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 14:46:32,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:46:32,000 INFO L85 PathProgramCache]: Analyzing trace with hash 333109749, now seen corresponding path program 1 times [2024-02-19 14:46:32,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:46:32,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783959407] [2024-02-19 14:46:32,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:46:32,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:46:32,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:46:32,040 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 14:46:32,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:46:32,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783959407] [2024-02-19 14:46:32,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783959407] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:46:32,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 14:46:32,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-19 14:46:32,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446493221] [2024-02-19 14:46:32,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:46:32,041 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-19 14:46:32,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:46:32,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-19 14:46:32,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-19 14:46:32,045 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 63 [2024-02-19 14:46:32,046 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 222 transitions, 2162 flow. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 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 14:46:32,046 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:46:32,046 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 63 [2024-02-19 14:46:32,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:46:33,255 INFO L124 PetriNetUnfolderBase]: 8554/13773 cut-off events. [2024-02-19 14:46:33,256 INFO L125 PetriNetUnfolderBase]: For 28359/29911 co-relation queries the response was YES. [2024-02-19 14:46:33,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65178 conditions, 13773 events. 8554/13773 cut-off events. For 28359/29911 co-relation queries the response was YES. Maximal size of possible extension queue 640. Compared 97819 event pairs, 665 based on Foata normal form. 40/10733 useless extension candidates. Maximal degree in co-relation 54766. Up to 10011 conditions per place. [2024-02-19 14:46:33,402 INFO L140 encePairwiseOnDemand]: 58/63 looper letters, 247 selfloop transitions, 13 changer transitions 6/283 dead transitions. [2024-02-19 14:46:33,403 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 283 transitions, 3323 flow [2024-02-19 14:46:33,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-19 14:46:33,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-19 14:46:33,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 123 transitions. [2024-02-19 14:46:33,404 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6507936507936508 [2024-02-19 14:46:33,420 INFO L308 CegarLoopForPetriNet]: 52 programPoint places, 9 predicate places. [2024-02-19 14:46:33,420 INFO L507 AbstractCegarLoop]: Abstraction has has 61 places, 283 transitions, 3323 flow [2024-02-19 14:46:33,421 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 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 14:46:33,421 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:46:33,421 INFO L234 CegarLoopForPetriNet]: trace histogram [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 14:46:33,421 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-02-19 14:46:33,421 INFO L432 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 14:46:33,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:46:33,422 INFO L85 PathProgramCache]: Analyzing trace with hash -1315028541, now seen corresponding path program 1 times [2024-02-19 14:46:33,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:46:33,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234408393] [2024-02-19 14:46:33,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:46:33,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:46:33,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:46:33,512 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:46:33,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:46:33,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234408393] [2024-02-19 14:46:33,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234408393] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:46:33,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 14:46:33,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-19 14:46:33,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994153854] [2024-02-19 14:46:33,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:46:33,514 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-19 14:46:33,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:46:33,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-19 14:46:33,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-19 14:46:33,515 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 63 [2024-02-19 14:46:33,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 283 transitions, 3323 flow. Second operand has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 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 14:46:33,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:46:33,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 63 [2024-02-19 14:46:33,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:46:35,162 INFO L124 PetriNetUnfolderBase]: 10303/16873 cut-off events. [2024-02-19 14:46:35,163 INFO L125 PetriNetUnfolderBase]: For 50955/53741 co-relation queries the response was YES. [2024-02-19 14:46:35,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92221 conditions, 16873 events. 10303/16873 cut-off events. For 50955/53741 co-relation queries the response was YES. Maximal size of possible extension queue 782. Compared 126220 event pairs, 1162 based on Foata normal form. 322/13344 useless extension candidates. Maximal degree in co-relation 63186. Up to 12280 conditions per place. [2024-02-19 14:46:35,529 INFO L140 encePairwiseOnDemand]: 57/63 looper letters, 313 selfloop transitions, 4 changer transitions 16/354 dead transitions. [2024-02-19 14:46:35,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 354 transitions, 4886 flow [2024-02-19 14:46:35,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-19 14:46:35,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-19 14:46:35,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 183 transitions. [2024-02-19 14:46:35,531 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.580952380952381 [2024-02-19 14:46:35,534 INFO L308 CegarLoopForPetriNet]: 52 programPoint places, 13 predicate places. [2024-02-19 14:46:35,534 INFO L507 AbstractCegarLoop]: Abstraction has has 65 places, 354 transitions, 4886 flow [2024-02-19 14:46:35,534 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 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 14:46:35,535 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:46:35,535 INFO L234 CegarLoopForPetriNet]: trace histogram [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] [2024-02-19 14:46:35,535 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-02-19 14:46:35,535 INFO L432 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 14:46:35,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:46:35,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1149160373, now seen corresponding path program 1 times [2024-02-19 14:46:35,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:46:35,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747017050] [2024-02-19 14:46:35,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:46:35,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:46:35,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:46:35,952 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:46:35,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:46:35,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747017050] [2024-02-19 14:46:35,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747017050] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:46:35,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1040946642] [2024-02-19 14:46:35,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:46:35,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:46:35,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:46:35,955 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 14:46:35,956 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 14:46:36,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:46:36,063 INFO L262 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 22 conjunts are in the unsatisfiable core [2024-02-19 14:46:36,067 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:46:36,124 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-02-19 14:46:36,285 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:46:36,285 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:46:36,572 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 33 treesize of output 29 [2024-02-19 14:46:36,584 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-02-19 14:46:36,584 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 41 [2024-02-19 14:46:36,622 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:46:36,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1040946642] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 14:46:36,622 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 14:46:36,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2024-02-19 14:46:36,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049274049] [2024-02-19 14:46:36,623 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 14:46:36,623 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-02-19 14:46:36,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:46:36,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-02-19 14:46:36,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2024-02-19 14:46:36,625 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 63 [2024-02-19 14:46:36,625 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 354 transitions, 4886 flow. Second operand has 17 states, 17 states have (on average 27.764705882352942) internal successors, (472), 17 states have internal predecessors, (472), 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 14:46:36,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:46:36,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 63 [2024-02-19 14:46:36,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:46:47,704 INFO L124 PetriNetUnfolderBase]: 58934/92714 cut-off events. [2024-02-19 14:46:47,706 INFO L125 PetriNetUnfolderBase]: For 421458/435834 co-relation queries the response was YES. [2024-02-19 14:46:48,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 585550 conditions, 92714 events. 58934/92714 cut-off events. For 421458/435834 co-relation queries the response was YES. Maximal size of possible extension queue 3208. Compared 802554 event pairs, 4452 based on Foata normal form. 938/73719 useless extension candidates. Maximal degree in co-relation 305982. Up to 69096 conditions per place. [2024-02-19 14:46:49,109 INFO L140 encePairwiseOnDemand]: 49/63 looper letters, 1619 selfloop transitions, 240 changer transitions 58/1938 dead transitions. [2024-02-19 14:46:49,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 1938 transitions, 31604 flow [2024-02-19 14:46:49,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-02-19 14:46:49,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-02-19 14:46:49,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 1199 transitions. [2024-02-19 14:46:49,113 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6797052154195011 [2024-02-19 14:46:49,114 INFO L308 CegarLoopForPetriNet]: 52 programPoint places, 40 predicate places. [2024-02-19 14:46:49,114 INFO L507 AbstractCegarLoop]: Abstraction has has 92 places, 1938 transitions, 31604 flow [2024-02-19 14:46:49,114 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 27.764705882352942) internal successors, (472), 17 states have internal predecessors, (472), 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 14:46:49,114 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:46:49,115 INFO L234 CegarLoopForPetriNet]: trace histogram [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] [2024-02-19 14:46:49,129 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 14:46:49,318 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:46:49,319 INFO L432 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 14:46:49,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:46:49,320 INFO L85 PathProgramCache]: Analyzing trace with hash -1438050306, now seen corresponding path program 1 times [2024-02-19 14:46:49,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:46:49,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219809454] [2024-02-19 14:46:49,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:46:49,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:46:49,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:46:49,381 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:46:49,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:46:49,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219809454] [2024-02-19 14:46:49,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219809454] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:46:49,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 14:46:49,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-19 14:46:49,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248457240] [2024-02-19 14:46:49,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:46:49,382 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-19 14:46:49,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:46:49,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-19 14:46:49,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-19 14:46:49,390 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 63 [2024-02-19 14:46:49,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 1938 transitions, 31604 flow. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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 14:46:49,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:46:49,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 63 [2024-02-19 14:46:49,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:47:18,025 INFO L124 PetriNetUnfolderBase]: 92662/134550 cut-off events. [2024-02-19 14:47:18,026 INFO L125 PetriNetUnfolderBase]: For 1011915/1014556 co-relation queries the response was YES. [2024-02-19 14:47:18,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 989333 conditions, 134550 events. 92662/134550 cut-off events. For 1011915/1014556 co-relation queries the response was YES. Maximal size of possible extension queue 4306. Compared 1056427 event pairs, 9531 based on Foata normal form. 152/109316 useless extension candidates. Maximal degree in co-relation 686564. Up to 103945 conditions per place. [2024-02-19 14:47:20,179 INFO L140 encePairwiseOnDemand]: 58/63 looper letters, 1903 selfloop transitions, 99 changer transitions 99/2117 dead transitions. [2024-02-19 14:47:20,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 2117 transitions, 38776 flow [2024-02-19 14:47:20,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-19 14:47:20,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-19 14:47:20,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 119 transitions. [2024-02-19 14:47:20,199 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6296296296296297 [2024-02-19 14:47:20,199 INFO L308 CegarLoopForPetriNet]: 52 programPoint places, 38 predicate places. [2024-02-19 14:47:20,200 INFO L507 AbstractCegarLoop]: Abstraction has has 90 places, 2117 transitions, 38776 flow [2024-02-19 14:47:20,200 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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 14:47:20,200 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:47:20,200 INFO L234 CegarLoopForPetriNet]: trace histogram [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] [2024-02-19 14:47:20,200 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-02-19 14:47:20,201 INFO L432 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 14:47:20,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:47:20,201 INFO L85 PathProgramCache]: Analyzing trace with hash 3823785, now seen corresponding path program 1 times [2024-02-19 14:47:20,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:47:20,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35691653] [2024-02-19 14:47:20,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:47:20,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:47:20,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:47:20,246 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-19 14:47:20,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:47:20,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35691653] [2024-02-19 14:47:20,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35691653] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:47:20,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 14:47:20,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-19 14:47:20,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730412874] [2024-02-19 14:47:20,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:47:20,250 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-19 14:47:20,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:47:20,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-19 14:47:20,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-19 14:47:20,255 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 63 [2024-02-19 14:47:20,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 2117 transitions, 38776 flow. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 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 14:47:20,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:47:20,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 63 [2024-02-19 14:47:20,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand