./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/parallel-misc-3-extended.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a340643f 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-misc-3-extended.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 1ac00c9540bbc99a446c9cb6c02e180c3a0ad4fef3c182d14bafdc7ea871c54c --- Real Ultimate output --- This is Ultimate 0.2.4-dev-a340643-m [2024-01-27 15:31:48,857 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-27 15:31:48,943 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-27 15:31:48,951 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-27 15:31:48,952 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-27 15:31:48,982 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-27 15:31:48,982 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-27 15:31:48,983 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-27 15:31:48,983 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-27 15:31:48,987 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-27 15:31:48,988 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-27 15:31:48,988 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-27 15:31:48,989 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-27 15:31:48,990 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-27 15:31:48,990 INFO L153 SettingsManager]: * Use SBE=true [2024-01-27 15:31:48,991 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-27 15:31:48,991 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-27 15:31:48,991 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-27 15:31:48,992 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-27 15:31:48,992 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-27 15:31:48,993 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-27 15:31:48,994 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-27 15:31:48,994 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-27 15:31:48,994 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-27 15:31:48,994 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-27 15:31:48,995 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-27 15:31:48,995 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-27 15:31:48,995 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-27 15:31:49,000 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-27 15:31:49,001 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-27 15:31:49,002 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-27 15:31:49,002 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-27 15:31:49,002 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 15:31:49,002 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-27 15:31:49,003 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-27 15:31:49,003 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-27 15:31:49,003 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-27 15:31:49,003 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-27 15:31:49,003 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-27 15:31:49,004 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-27 15:31:49,004 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-27 15:31:49,004 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-27 15:31:49,004 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-27 15:31:49,005 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1ac00c9540bbc99a446c9cb6c02e180c3a0ad4fef3c182d14bafdc7ea871c54c [2024-01-27 15:31:49,291 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-27 15:31:49,314 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-27 15:31:49,317 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-27 15:31:49,318 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-27 15:31:49,318 INFO L274 PluginConnector]: CDTParser initialized [2024-01-27 15:31:49,319 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-misc-3-extended.wvr.c [2024-01-27 15:31:50,544 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-27 15:31:50,765 INFO L384 CDTParser]: Found 1 translation units. [2024-01-27 15:31:50,766 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-3-extended.wvr.c [2024-01-27 15:31:50,777 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/880ab90b9/ebb5ecf1cbbd487f9ad10e17c7c57a86/FLAGe5f085bd7 [2024-01-27 15:31:50,794 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/880ab90b9/ebb5ecf1cbbd487f9ad10e17c7c57a86 [2024-01-27 15:31:50,797 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-27 15:31:50,798 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-01-27 15:31:50,800 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-27 15:31:50,801 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-27 15:31:50,805 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-27 15:31:50,806 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 03:31:50" (1/1) ... [2024-01-27 15:31:50,807 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6aaa7766 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:31:50, skipping insertion in model container [2024-01-27 15:31:50,807 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 03:31:50" (1/1) ... [2024-01-27 15:31:50,834 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-27 15:31:51,024 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-misc-3-extended.wvr.c[2895,2908] [2024-01-27 15:31:51,028 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 15:31:51,036 INFO L202 MainTranslator]: Completed pre-run [2024-01-27 15:31:51,059 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-misc-3-extended.wvr.c[2895,2908] [2024-01-27 15:31:51,064 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 15:31:51,095 INFO L206 MainTranslator]: Completed translation [2024-01-27 15:31:51,098 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:31:51 WrapperNode [2024-01-27 15:31:51,098 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-27 15:31:51,100 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-27 15:31:51,100 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-27 15:31:51,100 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-27 15:31:51,107 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:31:51" (1/1) ... [2024-01-27 15:31:51,124 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:31:51" (1/1) ... [2024-01-27 15:31:51,152 INFO L138 Inliner]: procedures = 22, calls = 37, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 70 [2024-01-27 15:31:51,152 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-27 15:31:51,153 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-27 15:31:51,153 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-27 15:31:51,153 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-27 15:31:51,164 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:31:51" (1/1) ... [2024-01-27 15:31:51,164 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:31:51" (1/1) ... [2024-01-27 15:31:51,174 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:31:51" (1/1) ... [2024-01-27 15:31:51,186 INFO L175 MemorySlicer]: Split 8 memory accesses to 4 slices as follows [2, 2, 2, 2]. 25 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 3 writes are split as follows [0, 1, 1, 1]. [2024-01-27 15:31:51,186 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:31:51" (1/1) ... [2024-01-27 15:31:51,194 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:31:51" (1/1) ... [2024-01-27 15:31:51,200 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:31:51" (1/1) ... [2024-01-27 15:31:51,215 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:31:51" (1/1) ... [2024-01-27 15:31:51,216 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:31:51" (1/1) ... [2024-01-27 15:31:51,224 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:31:51" (1/1) ... [2024-01-27 15:31:51,226 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-27 15:31:51,227 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-27 15:31:51,227 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-27 15:31:51,228 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-27 15:31:51,228 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:31:51" (1/1) ... [2024-01-27 15:31:51,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 15:31:51,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:31:51,263 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) [2024-01-27 15:31:51,275 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 [2024-01-27 15:31:51,310 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-27 15:31:51,310 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-01-27 15:31:51,310 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-01-27 15:31:51,311 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-01-27 15:31:51,311 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-01-27 15:31:51,311 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-01-27 15:31:51,311 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-01-27 15:31:51,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-27 15:31:51,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-27 15:31:51,314 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-27 15:31:51,314 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-27 15:31:51,314 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-27 15:31:51,314 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-27 15:31:51,314 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-27 15:31:51,314 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-27 15:31:51,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-27 15:31:51,315 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-01-27 15:31:51,315 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-01-27 15:31:51,316 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-27 15:31:51,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-27 15:31:51,316 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-27 15:31:51,317 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-27 15:31:51,317 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-27 15:31:51,317 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-01-27 15:31:51,318 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-27 15:31:51,319 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-27 15:31:51,422 INFO L244 CfgBuilder]: Building ICFG [2024-01-27 15:31:51,424 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-27 15:31:51,597 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-27 15:31:51,600 INFO L293 CfgBuilder]: Performing block encoding [2024-01-27 15:31:51,783 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-27 15:31:51,784 INFO L320 CfgBuilder]: Removed 3 assume(true) statements. [2024-01-27 15:31:51,784 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 03:31:51 BoogieIcfgContainer [2024-01-27 15:31:51,784 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-27 15:31:51,786 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-27 15:31:51,787 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-27 15:31:51,790 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-27 15:31:51,790 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 03:31:50" (1/3) ... [2024-01-27 15:31:51,791 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2596e8a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 03:31:51, skipping insertion in model container [2024-01-27 15:31:51,792 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:31:51" (2/3) ... [2024-01-27 15:31:51,792 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2596e8a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 03:31:51, skipping insertion in model container [2024-01-27 15:31:51,792 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 03:31:51" (3/3) ... [2024-01-27 15:31:51,793 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-3-extended.wvr.c [2024-01-27 15:31:51,804 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2024-01-27 15:31:51,812 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-27 15:31:51,812 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-01-27 15:31:51,812 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-27 15:31:51,888 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-01-27 15:31:51,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 46 places, 42 transitions, 105 flow [2024-01-27 15:31:51,975 INFO L124 PetriNetUnfolderBase]: 6/39 cut-off events. [2024-01-27 15:31:51,976 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-01-27 15:31:51,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52 conditions, 39 events. 6/39 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 75 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2024-01-27 15:31:51,981 INFO L82 GeneralOperation]: Start removeDead. Operand has 46 places, 42 transitions, 105 flow [2024-01-27 15:31:51,985 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 42 places, 38 transitions, 94 flow [2024-01-27 15:31:51,993 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-27 15:31:51,998 INFO L357 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=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1fac3181, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-27 15:31:51,998 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-01-27 15:31:52,009 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-27 15:31:52,010 INFO L124 PetriNetUnfolderBase]: 6/37 cut-off events. [2024-01-27 15:31:52,010 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-01-27 15:31:52,010 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:31:52,010 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:31:52,011 INFO L420 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)] === [2024-01-27 15:31:52,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:31:52,015 INFO L85 PathProgramCache]: Analyzing trace with hash 1587431230, now seen corresponding path program 1 times [2024-01-27 15:31:52,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:31:52,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362277317] [2024-01-27 15:31:52,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:31:52,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:31:52,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:31:52,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:31:52,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:31:52,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362277317] [2024-01-27 15:31:52,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362277317] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:31:52,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:31:52,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-27 15:31:52,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375586070] [2024-01-27 15:31:52,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:31:52,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 15:31:52,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:31:52,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 15:31:52,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 15:31:52,394 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 42 [2024-01-27 15:31:52,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 38 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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) [2024-01-27 15:31:52,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:31:52,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 42 [2024-01-27 15:31:52,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:31:52,676 INFO L124 PetriNetUnfolderBase]: 950/1519 cut-off events. [2024-01-27 15:31:52,677 INFO L125 PetriNetUnfolderBase]: For 74/74 co-relation queries the response was YES. [2024-01-27 15:31:52,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2798 conditions, 1519 events. 950/1519 cut-off events. For 74/74 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 7408 event pairs, 93 based on Foata normal form. 1/1363 useless extension candidates. Maximal degree in co-relation 2294. Up to 1118 conditions per place. [2024-01-27 15:31:52,695 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 36 selfloop transitions, 7 changer transitions 1/57 dead transitions. [2024-01-27 15:31:52,695 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 57 transitions, 235 flow [2024-01-27 15:31:52,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 15:31:52,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 15:31:52,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 93 transitions. [2024-01-27 15:31:52,708 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7380952380952381 [2024-01-27 15:31:52,710 INFO L175 Difference]: Start difference. First operand has 42 places, 38 transitions, 94 flow. Second operand 3 states and 93 transitions. [2024-01-27 15:31:52,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 57 transitions, 235 flow [2024-01-27 15:31:52,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 57 transitions, 213 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-01-27 15:31:52,720 INFO L231 Difference]: Finished difference. Result has 39 places, 44 transitions, 129 flow [2024-01-27 15:31:52,723 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=129, PETRI_PLACES=39, PETRI_TRANSITIONS=44} [2024-01-27 15:31:52,726 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -3 predicate places. [2024-01-27 15:31:52,726 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 44 transitions, 129 flow [2024-01-27 15:31:52,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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) [2024-01-27 15:31:52,727 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:31:52,727 INFO L208 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] [2024-01-27 15:31:52,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-27 15:31:52,728 INFO L420 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)] === [2024-01-27 15:31:52,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:31:52,729 INFO L85 PathProgramCache]: Analyzing trace with hash 762022240, now seen corresponding path program 1 times [2024-01-27 15:31:52,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:31:52,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837164660] [2024-01-27 15:31:52,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:31:52,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:31:52,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:31:52,896 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-27 15:31:52,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:31:52,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837164660] [2024-01-27 15:31:52,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837164660] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:31:52,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:31:52,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-27 15:31:52,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887660793] [2024-01-27 15:31:52,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:31:52,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 15:31:52,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:31:52,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 15:31:52,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 15:31:52,902 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 42 [2024-01-27 15:31:52,902 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 44 transitions, 129 flow. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 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) [2024-01-27 15:31:52,902 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:31:52,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 42 [2024-01-27 15:31:52,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:31:53,026 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([338] L44-->L50: Formula: (= (+ v_~pos~0_28 1) v_~pos~0_27) InVars {~pos~0=v_~pos~0_28} OutVars{thread1Thread1of1ForFork1_#t~post1=|v_thread1Thread1of1ForFork1_#t~post1_1|, ~pos~0=v_~pos~0_27} AuxVars[] AssignedVars[thread1Thread1of1ForFork1_#t~post1, ~pos~0][26], [17#thread3EXITtrue, Black: 51#(= ~pos~0 0), 49#true, 14#L122-1true, 39#L72true, 21#L50true, 55#(= ~g2~0 1)]) [2024-01-27 15:31:53,028 INFO L294 olderBase$Statistics]: this new event has 21 ancestors and is cut-off event [2024-01-27 15:31:53,028 INFO L297 olderBase$Statistics]: existing Event has 17 ancestors and is cut-off event [2024-01-27 15:31:53,028 INFO L297 olderBase$Statistics]: existing Event has 21 ancestors and is cut-off event [2024-01-27 15:31:53,029 INFO L297 olderBase$Statistics]: existing Event has 21 ancestors and is cut-off event [2024-01-27 15:31:53,029 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([338] L44-->L50: Formula: (= (+ v_~pos~0_28 1) v_~pos~0_27) InVars {~pos~0=v_~pos~0_28} OutVars{thread1Thread1of1ForFork1_#t~post1=|v_thread1Thread1of1ForFork1_#t~post1_1|, ~pos~0=v_~pos~0_27} AuxVars[] AssignedVars[thread1Thread1of1ForFork1_#t~post1, ~pos~0][26], [17#thread3EXITtrue, Black: 51#(= ~pos~0 0), 49#true, 39#L72true, 7#L121-4true, 21#L50true, 55#(= ~g2~0 1)]) [2024-01-27 15:31:53,029 INFO L294 olderBase$Statistics]: this new event has 20 ancestors and is cut-off event [2024-01-27 15:31:53,029 INFO L297 olderBase$Statistics]: existing Event has 20 ancestors and is cut-off event [2024-01-27 15:31:53,029 INFO L297 olderBase$Statistics]: existing Event has 16 ancestors and is cut-off event [2024-01-27 15:31:53,030 INFO L297 olderBase$Statistics]: existing Event has 20 ancestors and is cut-off event [2024-01-27 15:31:53,030 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([339] L48-->L50: Formula: (= (+ v_~pos~0_19 1) v_~pos~0_20) InVars {~pos~0=v_~pos~0_20} OutVars{thread1Thread1of1ForFork1_#t~post2=|v_thread1Thread1of1ForFork1_#t~post2_1|, ~pos~0=v_~pos~0_19} AuxVars[] AssignedVars[thread1Thread1of1ForFork1_#t~post2, ~pos~0][24], [17#thread3EXITtrue, Black: 51#(= ~pos~0 0), 49#true, 14#L122-1true, 39#L72true, 21#L50true, 55#(= ~g2~0 1)]) [2024-01-27 15:31:53,030 INFO L294 olderBase$Statistics]: this new event has 21 ancestors and is cut-off event [2024-01-27 15:31:53,030 INFO L297 olderBase$Statistics]: existing Event has 21 ancestors and is cut-off event [2024-01-27 15:31:53,031 INFO L297 olderBase$Statistics]: existing Event has 17 ancestors and is cut-off event [2024-01-27 15:31:53,032 INFO L297 olderBase$Statistics]: existing Event has 21 ancestors and is cut-off event [2024-01-27 15:31:53,032 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([339] L48-->L50: Formula: (= (+ v_~pos~0_19 1) v_~pos~0_20) InVars {~pos~0=v_~pos~0_20} OutVars{thread1Thread1of1ForFork1_#t~post2=|v_thread1Thread1of1ForFork1_#t~post2_1|, ~pos~0=v_~pos~0_19} AuxVars[] AssignedVars[thread1Thread1of1ForFork1_#t~post2, ~pos~0][24], [17#thread3EXITtrue, Black: 51#(= ~pos~0 0), 49#true, 39#L72true, 7#L121-4true, 21#L50true, 55#(= ~g2~0 1)]) [2024-01-27 15:31:53,032 INFO L294 olderBase$Statistics]: this new event has 20 ancestors and is cut-off event [2024-01-27 15:31:53,032 INFO L297 olderBase$Statistics]: existing Event has 16 ancestors and is cut-off event [2024-01-27 15:31:53,032 INFO L297 olderBase$Statistics]: existing Event has 20 ancestors and is cut-off event [2024-01-27 15:31:53,033 INFO L297 olderBase$Statistics]: existing Event has 20 ancestors and is cut-off event [2024-01-27 15:31:53,039 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([339] L48-->L50: Formula: (= (+ v_~pos~0_19 1) v_~pos~0_20) InVars {~pos~0=v_~pos~0_20} OutVars{thread1Thread1of1ForFork1_#t~post2=|v_thread1Thread1of1ForFork1_#t~post2_1|, ~pos~0=v_~pos~0_19} AuxVars[] AssignedVars[thread1Thread1of1ForFork1_#t~post2, ~pos~0][24], [26#L94true, Black: 51#(= ~pos~0 0), 49#true, 32#$Ultimate##0true, 14#L122-1true, 21#L50true, 55#(= ~g2~0 1)]) [2024-01-27 15:31:53,039 INFO L294 olderBase$Statistics]: this new event has 23 ancestors and is cut-off event [2024-01-27 15:31:53,040 INFO L297 olderBase$Statistics]: existing Event has 19 ancestors and is cut-off event [2024-01-27 15:31:53,040 INFO L297 olderBase$Statistics]: existing Event has 15 ancestors and is cut-off event [2024-01-27 15:31:53,045 INFO L297 olderBase$Statistics]: existing Event has 19 ancestors and is cut-off event [2024-01-27 15:31:53,045 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([338] L44-->L50: Formula: (= (+ v_~pos~0_28 1) v_~pos~0_27) InVars {~pos~0=v_~pos~0_28} OutVars{thread1Thread1of1ForFork1_#t~post1=|v_thread1Thread1of1ForFork1_#t~post1_1|, ~pos~0=v_~pos~0_27} AuxVars[] AssignedVars[thread1Thread1of1ForFork1_#t~post1, ~pos~0][26], [26#L94true, Black: 51#(= ~pos~0 0), 49#true, 32#$Ultimate##0true, 14#L122-1true, 21#L50true, 55#(= ~g2~0 1)]) [2024-01-27 15:31:53,046 INFO L294 olderBase$Statistics]: this new event has 23 ancestors and is cut-off event [2024-01-27 15:31:53,046 INFO L297 olderBase$Statistics]: existing Event has 19 ancestors and is cut-off event [2024-01-27 15:31:53,046 INFO L297 olderBase$Statistics]: existing Event has 15 ancestors and is cut-off event [2024-01-27 15:31:53,046 INFO L297 olderBase$Statistics]: existing Event has 19 ancestors and is cut-off event [2024-01-27 15:31:53,071 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([339] L48-->L50: Formula: (= (+ v_~pos~0_19 1) v_~pos~0_20) InVars {~pos~0=v_~pos~0_20} OutVars{thread1Thread1of1ForFork1_#t~post2=|v_thread1Thread1of1ForFork1_#t~post2_1|, ~pos~0=v_~pos~0_19} AuxVars[] AssignedVars[thread1Thread1of1ForFork1_#t~post2, ~pos~0][24], [26#L94true, Black: 51#(= ~pos~0 0), 49#true, 14#L122-1true, 39#L72true, 21#L50true, 55#(= ~g2~0 1)]) [2024-01-27 15:31:53,072 INFO L294 olderBase$Statistics]: this new event has 27 ancestors and is cut-off event [2024-01-27 15:31:53,072 INFO L297 olderBase$Statistics]: existing Event has 23 ancestors and is cut-off event [2024-01-27 15:31:53,072 INFO L297 olderBase$Statistics]: existing Event has 23 ancestors and is cut-off event [2024-01-27 15:31:53,072 INFO L297 olderBase$Statistics]: existing Event has 19 ancestors and is cut-off event [2024-01-27 15:31:53,073 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([338] L44-->L50: Formula: (= (+ v_~pos~0_28 1) v_~pos~0_27) InVars {~pos~0=v_~pos~0_28} OutVars{thread1Thread1of1ForFork1_#t~post1=|v_thread1Thread1of1ForFork1_#t~post1_1|, ~pos~0=v_~pos~0_27} AuxVars[] AssignedVars[thread1Thread1of1ForFork1_#t~post1, ~pos~0][26], [26#L94true, Black: 51#(= ~pos~0 0), 49#true, 14#L122-1true, 39#L72true, 21#L50true, 55#(= ~g2~0 1)]) [2024-01-27 15:31:53,073 INFO L294 olderBase$Statistics]: this new event has 27 ancestors and is cut-off event [2024-01-27 15:31:53,073 INFO L297 olderBase$Statistics]: existing Event has 23 ancestors and is cut-off event [2024-01-27 15:31:53,073 INFO L297 olderBase$Statistics]: existing Event has 19 ancestors and is cut-off event [2024-01-27 15:31:53,073 INFO L297 olderBase$Statistics]: existing Event has 23 ancestors and is cut-off event [2024-01-27 15:31:53,082 INFO L124 PetriNetUnfolderBase]: 753/1241 cut-off events. [2024-01-27 15:31:53,082 INFO L125 PetriNetUnfolderBase]: For 248/308 co-relation queries the response was YES. [2024-01-27 15:31:53,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2546 conditions, 1241 events. 753/1241 cut-off events. For 248/308 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 6043 event pairs, 85 based on Foata normal form. 54/1105 useless extension candidates. Maximal degree in co-relation 1117. Up to 508 conditions per place. [2024-01-27 15:31:53,093 INFO L140 encePairwiseOnDemand]: 39/42 looper letters, 33 selfloop transitions, 2 changer transitions 0/56 dead transitions. [2024-01-27 15:31:53,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 56 transitions, 229 flow [2024-01-27 15:31:53,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 15:31:53,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 15:31:53,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 94 transitions. [2024-01-27 15:31:53,096 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.746031746031746 [2024-01-27 15:31:53,097 INFO L175 Difference]: Start difference. First operand has 39 places, 44 transitions, 129 flow. Second operand 3 states and 94 transitions. [2024-01-27 15:31:53,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 56 transitions, 229 flow [2024-01-27 15:31:53,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 56 transitions, 220 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-01-27 15:31:53,102 INFO L231 Difference]: Finished difference. Result has 41 places, 45 transitions, 132 flow [2024-01-27 15:31:53,102 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=132, PETRI_PLACES=41, PETRI_TRANSITIONS=45} [2024-01-27 15:31:53,103 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -1 predicate places. [2024-01-27 15:31:53,103 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 45 transitions, 132 flow [2024-01-27 15:31:53,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 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) [2024-01-27 15:31:53,104 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:31:53,104 INFO L208 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] [2024-01-27 15:31:53,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-27 15:31:53,104 INFO L420 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)] === [2024-01-27 15:31:53,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:31:53,107 INFO L85 PathProgramCache]: Analyzing trace with hash -2133625150, now seen corresponding path program 1 times [2024-01-27 15:31:53,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:31:53,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771204429] [2024-01-27 15:31:53,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:31:53,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:31:53,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:31:53,284 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-27 15:31:53,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:31:53,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771204429] [2024-01-27 15:31:53,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771204429] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:31:53,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:31:53,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-27 15:31:53,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263205577] [2024-01-27 15:31:53,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:31:53,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 15:31:53,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:31:53,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 15:31:53,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 15:31:53,291 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 42 [2024-01-27 15:31:53,292 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 45 transitions, 132 flow. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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) [2024-01-27 15:31:53,292 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:31:53,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 42 [2024-01-27 15:31:53,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:31:53,448 INFO L124 PetriNetUnfolderBase]: 833/1329 cut-off events. [2024-01-27 15:31:53,448 INFO L125 PetriNetUnfolderBase]: For 497/727 co-relation queries the response was YES. [2024-01-27 15:31:53,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3074 conditions, 1329 events. 833/1329 cut-off events. For 497/727 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 6562 event pairs, 102 based on Foata normal form. 47/1150 useless extension candidates. Maximal degree in co-relation 1005. Up to 683 conditions per place. [2024-01-27 15:31:53,459 INFO L140 encePairwiseOnDemand]: 39/42 looper letters, 35 selfloop transitions, 2 changer transitions 0/58 dead transitions. [2024-01-27 15:31:53,460 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 58 transitions, 245 flow [2024-01-27 15:31:53,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 15:31:53,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 15:31:53,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 94 transitions. [2024-01-27 15:31:53,464 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.746031746031746 [2024-01-27 15:31:53,464 INFO L175 Difference]: Start difference. First operand has 41 places, 45 transitions, 132 flow. Second operand 3 states and 94 transitions. [2024-01-27 15:31:53,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 58 transitions, 245 flow [2024-01-27 15:31:53,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 58 transitions, 242 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-27 15:31:53,467 INFO L231 Difference]: Finished difference. Result has 43 places, 46 transitions, 142 flow [2024-01-27 15:31:53,467 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=142, PETRI_PLACES=43, PETRI_TRANSITIONS=46} [2024-01-27 15:31:53,468 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 1 predicate places. [2024-01-27 15:31:53,468 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 46 transitions, 142 flow [2024-01-27 15:31:53,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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) [2024-01-27 15:31:53,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:31:53,469 INFO L208 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] [2024-01-27 15:31:53,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-27 15:31:53,469 INFO L420 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)] === [2024-01-27 15:31:53,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:31:53,470 INFO L85 PathProgramCache]: Analyzing trace with hash 12153880, now seen corresponding path program 1 times [2024-01-27 15:31:53,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:31:53,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573206592] [2024-01-27 15:31:53,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:31:53,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:31:53,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:31:53,594 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:31:53,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:31:53,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573206592] [2024-01-27 15:31:53,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573206592] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:31:53,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:31:53,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-27 15:31:53,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155881986] [2024-01-27 15:31:53,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:31:53,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 15:31:53,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:31:53,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 15:31:53,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 15:31:53,599 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 42 [2024-01-27 15:31:53,599 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 46 transitions, 142 flow. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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) [2024-01-27 15:31:53,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:31:53,600 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 42 [2024-01-27 15:31:53,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:31:53,744 INFO L124 PetriNetUnfolderBase]: 968/1562 cut-off events. [2024-01-27 15:31:53,744 INFO L125 PetriNetUnfolderBase]: For 653/777 co-relation queries the response was YES. [2024-01-27 15:31:53,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3657 conditions, 1562 events. 968/1562 cut-off events. For 653/777 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 7652 event pairs, 193 based on Foata normal form. 52/1315 useless extension candidates. Maximal degree in co-relation 1185. Up to 578 conditions per place. [2024-01-27 15:31:53,757 INFO L140 encePairwiseOnDemand]: 39/42 looper letters, 37 selfloop transitions, 2 changer transitions 0/60 dead transitions. [2024-01-27 15:31:53,757 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 60 transitions, 267 flow [2024-01-27 15:31:53,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 15:31:53,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 15:31:53,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 94 transitions. [2024-01-27 15:31:53,759 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.746031746031746 [2024-01-27 15:31:53,759 INFO L175 Difference]: Start difference. First operand has 43 places, 46 transitions, 142 flow. Second operand 3 states and 94 transitions. [2024-01-27 15:31:53,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 60 transitions, 267 flow [2024-01-27 15:31:53,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 60 transitions, 264 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-27 15:31:53,761 INFO L231 Difference]: Finished difference. Result has 45 places, 47 transitions, 152 flow [2024-01-27 15:31:53,761 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=152, PETRI_PLACES=45, PETRI_TRANSITIONS=47} [2024-01-27 15:31:53,762 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 3 predicate places. [2024-01-27 15:31:53,762 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 47 transitions, 152 flow [2024-01-27 15:31:53,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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) [2024-01-27 15:31:53,763 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:31:53,763 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:31:53,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-27 15:31:53,763 INFO L420 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)] === [2024-01-27 15:31:53,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:31:53,764 INFO L85 PathProgramCache]: Analyzing trace with hash -501636098, now seen corresponding path program 1 times [2024-01-27 15:31:53,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:31:53,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707208359] [2024-01-27 15:31:53,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:31:53,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:31:53,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:31:53,963 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-01-27 15:31:53,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:31:53,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707208359] [2024-01-27 15:31:53,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707208359] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:31:53,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:31:53,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-27 15:31:53,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936976314] [2024-01-27 15:31:53,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:31:53,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 15:31:53,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:31:53,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 15:31:53,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-27 15:31:53,971 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 42 [2024-01-27 15:31:53,971 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 47 transitions, 152 flow. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 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) [2024-01-27 15:31:53,971 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:31:53,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 42 [2024-01-27 15:31:53,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:31:54,357 INFO L124 PetriNetUnfolderBase]: 2277/3456 cut-off events. [2024-01-27 15:31:54,358 INFO L125 PetriNetUnfolderBase]: For 1799/1859 co-relation queries the response was YES. [2024-01-27 15:31:54,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8775 conditions, 3456 events. 2277/3456 cut-off events. For 1799/1859 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 18471 event pairs, 425 based on Foata normal form. 70/3043 useless extension candidates. Maximal degree in co-relation 3624. Up to 1157 conditions per place. [2024-01-27 15:31:54,386 INFO L140 encePairwiseOnDemand]: 37/42 looper letters, 54 selfloop transitions, 5 changer transitions 0/77 dead transitions. [2024-01-27 15:31:54,387 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 77 transitions, 370 flow [2024-01-27 15:31:54,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-27 15:31:54,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-27 15:31:54,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 124 transitions. [2024-01-27 15:31:54,389 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7380952380952381 [2024-01-27 15:31:54,389 INFO L175 Difference]: Start difference. First operand has 45 places, 47 transitions, 152 flow. Second operand 4 states and 124 transitions. [2024-01-27 15:31:54,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 77 transitions, 370 flow [2024-01-27 15:31:54,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 77 transitions, 366 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-27 15:31:54,394 INFO L231 Difference]: Finished difference. Result has 49 places, 49 transitions, 182 flow [2024-01-27 15:31:54,394 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=182, PETRI_PLACES=49, PETRI_TRANSITIONS=49} [2024-01-27 15:31:54,398 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 7 predicate places. [2024-01-27 15:31:54,398 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 49 transitions, 182 flow [2024-01-27 15:31:54,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 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) [2024-01-27 15:31:54,398 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:31:54,399 INFO L208 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] [2024-01-27 15:31:54,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-27 15:31:54,399 INFO L420 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)] === [2024-01-27 15:31:54,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:31:54,400 INFO L85 PathProgramCache]: Analyzing trace with hash 2060429714, now seen corresponding path program 1 times [2024-01-27 15:31:54,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:31:54,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222634658] [2024-01-27 15:31:54,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:31:54,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:31:54,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:31:54,677 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-01-27 15:31:54,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:31:54,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222634658] [2024-01-27 15:31:54,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222634658] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:31:54,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:31:54,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-27 15:31:54,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112254647] [2024-01-27 15:31:54,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:31:54,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 15:31:54,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:31:54,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 15:31:54,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-27 15:31:54,686 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 42 [2024-01-27 15:31:54,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 49 transitions, 182 flow. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 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) [2024-01-27 15:31:54,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:31:54,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 42 [2024-01-27 15:31:54,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:31:55,203 INFO L124 PetriNetUnfolderBase]: 3653/5348 cut-off events. [2024-01-27 15:31:55,203 INFO L125 PetriNetUnfolderBase]: For 7648/8274 co-relation queries the response was YES. [2024-01-27 15:31:55,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15602 conditions, 5348 events. 3653/5348 cut-off events. For 7648/8274 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 29451 event pairs, 845 based on Foata normal form. 210/4491 useless extension candidates. Maximal degree in co-relation 5610. Up to 1761 conditions per place. [2024-01-27 15:31:55,244 INFO L140 encePairwiseOnDemand]: 37/42 looper letters, 60 selfloop transitions, 5 changer transitions 0/83 dead transitions. [2024-01-27 15:31:55,245 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 83 transitions, 456 flow [2024-01-27 15:31:55,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-27 15:31:55,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-27 15:31:55,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 124 transitions. [2024-01-27 15:31:55,246 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7380952380952381 [2024-01-27 15:31:55,246 INFO L175 Difference]: Start difference. First operand has 49 places, 49 transitions, 182 flow. Second operand 4 states and 124 transitions. [2024-01-27 15:31:55,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 83 transitions, 456 flow [2024-01-27 15:31:55,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 83 transitions, 450 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-01-27 15:31:55,253 INFO L231 Difference]: Finished difference. Result has 54 places, 51 transitions, 212 flow [2024-01-27 15:31:55,253 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=212, PETRI_PLACES=54, PETRI_TRANSITIONS=51} [2024-01-27 15:31:55,253 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 12 predicate places. [2024-01-27 15:31:55,254 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 51 transitions, 212 flow [2024-01-27 15:31:55,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 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) [2024-01-27 15:31:55,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:31:55,254 INFO L208 CegarLoopForPetriNet]: trace histogram [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, 1, 1] [2024-01-27 15:31:55,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-27 15:31:55,255 INFO L420 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)] === [2024-01-27 15:31:55,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:31:55,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1250765526, now seen corresponding path program 1 times [2024-01-27 15:31:55,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:31:55,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491497712] [2024-01-27 15:31:55,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:31:55,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:31:55,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:31:55,540 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-01-27 15:31:55,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:31:55,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491497712] [2024-01-27 15:31:55,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491497712] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 15:31:55,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1490791725] [2024-01-27 15:31:55,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:31:55,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:31:55,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:31:55,548 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) [2024-01-27 15:31:55,554 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-01-27 15:31:55,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:31:55,655 INFO L262 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 17 conjunts are in the unsatisfiable core [2024-01-27 15:31:55,665 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:31:55,876 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-01-27 15:31:55,876 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-27 15:31:56,226 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-01-27 15:31:56,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1490791725] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-27 15:31:56,226 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-27 15:31:56,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 7] total 12 [2024-01-27 15:31:56,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054365166] [2024-01-27 15:31:56,227 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-27 15:31:56,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-01-27 15:31:56,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:31:56,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-01-27 15:31:56,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2024-01-27 15:31:56,247 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 42 [2024-01-27 15:31:56,247 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 51 transitions, 212 flow. Second operand has 13 states, 13 states have (on average 18.692307692307693) internal successors, (243), 13 states have internal predecessors, (243), 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) [2024-01-27 15:31:56,247 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:31:56,248 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 42 [2024-01-27 15:31:56,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:31:58,422 INFO L124 PetriNetUnfolderBase]: 12425/17618 cut-off events. [2024-01-27 15:31:58,422 INFO L125 PetriNetUnfolderBase]: For 27316/29453 co-relation queries the response was YES. [2024-01-27 15:31:58,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54269 conditions, 17618 events. 12425/17618 cut-off events. For 27316/29453 co-relation queries the response was YES. Maximal size of possible extension queue 621. Compared 102866 event pairs, 1345 based on Foata normal form. 1513/17386 useless extension candidates. Maximal degree in co-relation 16100. Up to 4147 conditions per place. [2024-01-27 15:31:58,572 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 246 selfloop transitions, 77 changer transitions 0/337 dead transitions. [2024-01-27 15:31:58,572 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 337 transitions, 2167 flow [2024-01-27 15:31:58,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-01-27 15:31:58,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-01-27 15:31:58,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 567 transitions. [2024-01-27 15:31:58,576 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6136363636363636 [2024-01-27 15:31:58,576 INFO L175 Difference]: Start difference. First operand has 54 places, 51 transitions, 212 flow. Second operand 22 states and 567 transitions. [2024-01-27 15:31:58,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 337 transitions, 2167 flow [2024-01-27 15:31:58,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 337 transitions, 2155 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-01-27 15:31:58,588 INFO L231 Difference]: Finished difference. Result has 93 places, 123 transitions, 893 flow [2024-01-27 15:31:58,589 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=893, PETRI_PLACES=93, PETRI_TRANSITIONS=123} [2024-01-27 15:31:58,589 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 51 predicate places. [2024-01-27 15:31:58,589 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 123 transitions, 893 flow [2024-01-27 15:31:58,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 18.692307692307693) internal successors, (243), 13 states have internal predecessors, (243), 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) [2024-01-27 15:31:58,590 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:31:58,590 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 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, 1, 1] [2024-01-27 15:31:58,610 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-01-27 15:31:58,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:31:58,812 INFO L420 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)] === [2024-01-27 15:31:58,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:31:58,812 INFO L85 PathProgramCache]: Analyzing trace with hash 258513928, now seen corresponding path program 1 times [2024-01-27 15:31:58,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:31:58,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579598329] [2024-01-27 15:31:58,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:31:58,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:31:58,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:31:59,028 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-27 15:31:59,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:31:59,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579598329] [2024-01-27 15:31:59,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579598329] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 15:31:59,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1315248900] [2024-01-27 15:31:59,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:31:59,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:31:59,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:31:59,030 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) [2024-01-27 15:31:59,051 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-01-27 15:31:59,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:31:59,135 INFO L262 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 15 conjunts are in the unsatisfiable core [2024-01-27 15:31:59,139 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:31:59,196 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-27 15:31:59,197 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-27 15:31:59,244 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-27 15:31:59,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1315248900] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-27 15:31:59,245 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-27 15:31:59,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 6 [2024-01-27 15:31:59,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494449586] [2024-01-27 15:31:59,246 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-27 15:31:59,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-27 15:31:59,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:31:59,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-27 15:31:59,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-01-27 15:31:59,251 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 42 [2024-01-27 15:31:59,251 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 123 transitions, 893 flow. Second operand has 7 states, 7 states have (on average 20.0) internal successors, (140), 7 states have internal predecessors, (140), 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) [2024-01-27 15:31:59,251 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:31:59,252 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 42 [2024-01-27 15:31:59,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:32:08,409 INFO L124 PetriNetUnfolderBase]: 47017/76247 cut-off events. [2024-01-27 15:32:08,409 INFO L125 PetriNetUnfolderBase]: For 310288/316641 co-relation queries the response was YES. [2024-01-27 15:32:08,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 296939 conditions, 76247 events. 47017/76247 cut-off events. For 310288/316641 co-relation queries the response was YES. Maximal size of possible extension queue 2216. Compared 643071 event pairs, 5116 based on Foata normal form. 1803/76669 useless extension candidates. Maximal degree in co-relation 227886. Up to 23200 conditions per place. [2024-01-27 15:32:09,088 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 395 selfloop transitions, 34 changer transitions 1/475 dead transitions. [2024-01-27 15:32:09,088 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 475 transitions, 4541 flow [2024-01-27 15:32:09,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-27 15:32:09,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-27 15:32:09,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 250 transitions. [2024-01-27 15:32:09,091 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8503401360544217 [2024-01-27 15:32:09,091 INFO L175 Difference]: Start difference. First operand has 93 places, 123 transitions, 893 flow. Second operand 7 states and 250 transitions. [2024-01-27 15:32:09,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 475 transitions, 4541 flow [2024-01-27 15:32:10,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 475 transitions, 4249 flow, removed 146 selfloop flow, removed 0 redundant places. [2024-01-27 15:32:10,237 INFO L231 Difference]: Finished difference. Result has 100 places, 153 transitions, 1056 flow [2024-01-27 15:32:10,237 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=841, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1056, PETRI_PLACES=100, PETRI_TRANSITIONS=153} [2024-01-27 15:32:10,238 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 58 predicate places. [2024-01-27 15:32:10,238 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 153 transitions, 1056 flow [2024-01-27 15:32:10,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 7 states have internal predecessors, (140), 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) [2024-01-27 15:32:10,239 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:32:10,239 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 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, 1, 1] [2024-01-27 15:32:10,257 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-01-27 15:32:10,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-01-27 15:32:10,453 INFO L420 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)] === [2024-01-27 15:32:10,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:32:10,453 INFO L85 PathProgramCache]: Analyzing trace with hash 719136426, now seen corresponding path program 2 times [2024-01-27 15:32:10,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:32:10,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132233037] [2024-01-27 15:32:10,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:32:10,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:32:10,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:32:10,631 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-01-27 15:32:10,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:32:10,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132233037] [2024-01-27 15:32:10,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132233037] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 15:32:10,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1512141420] [2024-01-27 15:32:10,636 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-01-27 15:32:10,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:32:10,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:32:10,638 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) [2024-01-27 15:32:10,656 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-01-27 15:32:10,741 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-01-27 15:32:10,741 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-27 15:32:10,743 INFO L262 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 15 conjunts are in the unsatisfiable core [2024-01-27 15:32:10,746 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:32:10,800 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-01-27 15:32:10,800 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-27 15:32:10,854 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-01-27 15:32:10,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1512141420] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-27 15:32:10,854 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-27 15:32:10,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 6 [2024-01-27 15:32:10,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925018221] [2024-01-27 15:32:10,857 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-27 15:32:10,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-27 15:32:10,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:32:10,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-27 15:32:10,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-01-27 15:32:10,870 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 42 [2024-01-27 15:32:10,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 153 transitions, 1056 flow. Second operand has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 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) [2024-01-27 15:32:10,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:32:10,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 42 [2024-01-27 15:32:10,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:32:31,185 INFO L124 PetriNetUnfolderBase]: 106730/171073 cut-off events. [2024-01-27 15:32:31,185 INFO L125 PetriNetUnfolderBase]: For 726899/742042 co-relation queries the response was YES. [2024-01-27 15:32:32,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 709708 conditions, 171073 events. 106730/171073 cut-off events. For 726899/742042 co-relation queries the response was YES. Maximal size of possible extension queue 5566. Compared 1585821 event pairs, 12621 based on Foata normal form. 4997/172411 useless extension candidates. Maximal degree in co-relation 531369. Up to 59174 conditions per place. [2024-01-27 15:32:33,229 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 422 selfloop transitions, 58 changer transitions 1/526 dead transitions. [2024-01-27 15:32:33,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 526 transitions, 4752 flow [2024-01-27 15:32:33,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-27 15:32:33,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-27 15:32:33,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 252 transitions. [2024-01-27 15:32:33,231 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8571428571428571 [2024-01-27 15:32:33,231 INFO L175 Difference]: Start difference. First operand has 100 places, 153 transitions, 1056 flow. Second operand 7 states and 252 transitions. [2024-01-27 15:32:33,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 526 transitions, 4752 flow [2024-01-27 15:32:37,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 526 transitions, 4596 flow, removed 78 selfloop flow, removed 0 redundant places. [2024-01-27 15:32:37,215 INFO L231 Difference]: Finished difference. Result has 110 places, 207 transitions, 1497 flow [2024-01-27 15:32:37,215 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=996, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1497, PETRI_PLACES=110, PETRI_TRANSITIONS=207} [2024-01-27 15:32:37,216 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 68 predicate places. [2024-01-27 15:32:37,216 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 207 transitions, 1497 flow [2024-01-27 15:32:37,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 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) [2024-01-27 15:32:37,217 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:32:37,217 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 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, 1, 1] [2024-01-27 15:32:37,233 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-01-27 15:32:37,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:32:37,433 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:32:37,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:32:37,434 INFO L85 PathProgramCache]: Analyzing trace with hash -759994406, now seen corresponding path program 3 times [2024-01-27 15:32:37,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:32:37,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627124325] [2024-01-27 15:32:37,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:32:37,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:32:37,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:32:37,623 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:32:37,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:32:37,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627124325] [2024-01-27 15:32:37,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627124325] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 15:32:37,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [79934340] [2024-01-27 15:32:37,624 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-01-27 15:32:37,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:32:37,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:32:37,625 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) [2024-01-27 15:32:37,626 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-01-27 15:32:37,741 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-01-27 15:32:37,741 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-27 15:32:37,743 INFO L262 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 15 conjunts are in the unsatisfiable core [2024-01-27 15:32:37,745 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:32:37,795 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:32:37,795 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-27 15:32:37,841 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:32:37,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [79934340] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-27 15:32:37,841 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-27 15:32:37,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 7 [2024-01-27 15:32:37,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492523301] [2024-01-27 15:32:37,842 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-27 15:32:37,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-27 15:32:37,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:32:37,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-27 15:32:37,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-01-27 15:32:37,849 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 42 [2024-01-27 15:32:37,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 207 transitions, 1497 flow. Second operand has 8 states, 8 states have (on average 19.5) internal successors, (156), 8 states have internal predecessors, (156), 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) [2024-01-27 15:32:37,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:32:37,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 42 [2024-01-27 15:32:37,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand