./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/parallel-parallel-sum-2.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-parallel-sum-2.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 aee5edffc06a346ddce4a9cfa75b4213bee8ccd3009aa5307dc09037d26d7f28 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-a340643-m [2024-01-27 15:32:51,013 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-27 15:32:51,093 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-27 15:32:51,099 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-27 15:32:51,099 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-27 15:32:51,128 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-27 15:32:51,128 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-27 15:32:51,129 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-27 15:32:51,129 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-27 15:32:51,133 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-27 15:32:51,133 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-27 15:32:51,134 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-27 15:32:51,135 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-27 15:32:51,136 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-27 15:32:51,136 INFO L153 SettingsManager]: * Use SBE=true [2024-01-27 15:32:51,136 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-27 15:32:51,137 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-27 15:32:51,137 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-27 15:32:51,137 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-27 15:32:51,137 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-27 15:32:51,138 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-27 15:32:51,138 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-27 15:32:51,138 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-27 15:32:51,139 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-27 15:32:51,139 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-27 15:32:51,139 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-27 15:32:51,139 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-27 15:32:51,140 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-27 15:32:51,140 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-27 15:32:51,141 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-27 15:32:51,142 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-27 15:32:51,142 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-27 15:32:51,142 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 15:32:51,142 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-27 15:32:51,142 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-27 15:32:51,143 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-27 15:32:51,143 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-27 15:32:51,143 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-27 15:32:51,143 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-27 15:32:51,144 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-27 15:32:51,144 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-27 15:32:51,144 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-27 15:32:51,144 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-27 15:32:51,145 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aee5edffc06a346ddce4a9cfa75b4213bee8ccd3009aa5307dc09037d26d7f28 [2024-01-27 15:32:51,398 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-27 15:32:51,418 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-27 15:32:51,422 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-27 15:32:51,423 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-27 15:32:51,423 INFO L274 PluginConnector]: CDTParser initialized [2024-01-27 15:32:51,424 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-parallel-sum-2.wvr.c [2024-01-27 15:32:52,592 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-27 15:32:52,781 INFO L384 CDTParser]: Found 1 translation units. [2024-01-27 15:32:52,781 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-parallel-sum-2.wvr.c [2024-01-27 15:32:52,789 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e76a0d13/73605785dadd42f28061d17689df13d3/FLAGfe4d84d93 [2024-01-27 15:32:52,800 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e76a0d13/73605785dadd42f28061d17689df13d3 [2024-01-27 15:32:52,803 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-27 15:32:52,804 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-01-27 15:32:52,805 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-27 15:32:52,805 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-27 15:32:52,809 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-27 15:32:52,810 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 03:32:52" (1/1) ... [2024-01-27 15:32:52,811 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15ae844 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:32:52, skipping insertion in model container [2024-01-27 15:32:52,811 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 03:32:52" (1/1) ... [2024-01-27 15:32:52,833 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-27 15:32:52,984 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-parallel-sum-2.wvr.c[4303,4316] [2024-01-27 15:32:52,993 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 15:32:53,005 INFO L202 MainTranslator]: Completed pre-run [2024-01-27 15:32:53,032 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-parallel-sum-2.wvr.c[4303,4316] [2024-01-27 15:32:53,036 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 15:32:53,051 INFO L206 MainTranslator]: Completed translation [2024-01-27 15:32:53,051 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:32:53 WrapperNode [2024-01-27 15:32:53,051 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-27 15:32:53,052 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-27 15:32:53,053 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-27 15:32:53,053 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-27 15:32:53,059 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:32:53" (1/1) ... [2024-01-27 15:32:53,070 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:32:53" (1/1) ... [2024-01-27 15:32:53,105 INFO L138 Inliner]: procedures = 29, calls = 88, calls flagged for inlining = 22, calls inlined = 32, statements flattened = 409 [2024-01-27 15:32:53,106 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-27 15:32:53,106 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-27 15:32:53,107 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-27 15:32:53,107 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-27 15:32:53,117 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:32:53" (1/1) ... [2024-01-27 15:32:53,122 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:32:53" (1/1) ... [2024-01-27 15:32:53,130 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:32:53" (1/1) ... [2024-01-27 15:32:53,160 INFO L175 MemorySlicer]: Split 19 memory accesses to 8 slices as follows [2, 5, 2, 2, 2, 2, 2, 2]. 26 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0, 0, 0, 0]. The 7 writes are split as follows [0, 1, 1, 1, 1, 1, 1, 1]. [2024-01-27 15:32:53,160 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:32:53" (1/1) ... [2024-01-27 15:32:53,160 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:32:53" (1/1) ... [2024-01-27 15:32:53,179 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:32:53" (1/1) ... [2024-01-27 15:32:53,189 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:32:53" (1/1) ... [2024-01-27 15:32:53,196 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:32:53" (1/1) ... [2024-01-27 15:32:53,210 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:32:53" (1/1) ... [2024-01-27 15:32:53,215 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-27 15:32:53,216 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-27 15:32:53,216 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-27 15:32:53,216 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-27 15:32:53,217 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:32:53" (1/1) ... [2024-01-27 15:32:53,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 15:32:53,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:32:53,265 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 15:32:53,298 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 15:32:53,324 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-27 15:32:53,324 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-27 15:32:53,325 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-27 15:32:53,325 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-27 15:32:53,325 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-27 15:32:53,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-27 15:32:53,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-01-27 15:32:53,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-01-27 15:32:53,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-01-27 15:32:53,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-01-27 15:32:53,329 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-27 15:32:53,329 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-27 15:32:53,329 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-27 15:32:53,329 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-01-27 15:32:53,329 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-01-27 15:32:53,329 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-01-27 15:32:53,330 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-01-27 15:32:53,330 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-01-27 15:32:53,330 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-01-27 15:32:53,331 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-01-27 15:32:53,331 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-01-27 15:32:53,331 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-01-27 15:32:53,331 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-01-27 15:32:53,332 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-01-27 15:32:53,332 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-01-27 15:32:53,333 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-01-27 15:32:53,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-27 15:32:53,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-27 15:32:53,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-27 15:32:53,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-27 15:32:53,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-01-27 15:32:53,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-01-27 15:32:53,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-01-27 15:32:53,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-01-27 15:32:53,335 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2024-01-27 15:32:53,335 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2024-01-27 15:32:53,335 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2024-01-27 15:32:53,336 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2024-01-27 15:32:53,336 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-01-27 15:32:53,336 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-01-27 15:32:53,336 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-01-27 15:32:53,336 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-27 15:32:53,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-27 15:32:53,336 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-27 15:32:53,338 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 15:32:53,468 INFO L244 CfgBuilder]: Building ICFG [2024-01-27 15:32:53,470 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-27 15:32:53,964 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-27 15:32:53,964 INFO L293 CfgBuilder]: Performing block encoding [2024-01-27 15:32:54,352 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-27 15:32:54,352 INFO L320 CfgBuilder]: Removed 5 assume(true) statements. [2024-01-27 15:32:54,353 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 03:32:54 BoogieIcfgContainer [2024-01-27 15:32:54,353 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-27 15:32:54,355 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-27 15:32:54,355 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-27 15:32:54,358 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-27 15:32:54,358 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 03:32:52" (1/3) ... [2024-01-27 15:32:54,359 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b5f3c0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 03:32:54, skipping insertion in model container [2024-01-27 15:32:54,359 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:32:53" (2/3) ... [2024-01-27 15:32:54,361 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b5f3c0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 03:32:54, skipping insertion in model container [2024-01-27 15:32:54,361 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 03:32:54" (3/3) ... [2024-01-27 15:32:54,362 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-parallel-sum-2.wvr.c [2024-01-27 15:32:54,372 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2024-01-27 15:32:54,381 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-27 15:32:54,381 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-01-27 15:32:54,381 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-27 15:32:54,489 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2024-01-27 15:32:54,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 95 places, 89 transitions, 244 flow [2024-01-27 15:32:54,589 INFO L124 PetriNetUnfolderBase]: 13/71 cut-off events. [2024-01-27 15:32:54,590 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-01-27 15:32:54,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100 conditions, 71 events. 13/71 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 167 event pairs, 0 based on Foata normal form. 0/57 useless extension candidates. Maximal degree in co-relation 79. Up to 3 conditions per place. [2024-01-27 15:32:54,594 INFO L82 GeneralOperation]: Start removeDead. Operand has 95 places, 89 transitions, 244 flow [2024-01-27 15:32:54,598 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 76 places, 70 transitions, 188 flow [2024-01-27 15:32:54,613 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-27 15:32:54,618 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;@6a84783c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-27 15:32:54,619 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2024-01-27 15:32:54,649 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-27 15:32:54,649 INFO L124 PetriNetUnfolderBase]: 13/69 cut-off events. [2024-01-27 15:32:54,649 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-01-27 15:32:54,650 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:32:54,650 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:32:54,651 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err9INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2024-01-27 15:32:54,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:32:54,657 INFO L85 PathProgramCache]: Analyzing trace with hash 1897803774, now seen corresponding path program 1 times [2024-01-27 15:32:54,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:32:54,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111699177] [2024-01-27 15:32:54,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:32:54,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:32:54,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:32:54,977 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 15:32:54,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:32:54,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111699177] [2024-01-27 15:32:54,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111699177] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:32:54,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:32:54,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-27 15:32:54,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942647431] [2024-01-27 15:32:54,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:32:54,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-01-27 15:32:54,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:32:55,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-01-27 15:32:55,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-01-27 15:32:55,024 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 93 [2024-01-27 15:32:55,027 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 70 transitions, 188 flow. Second operand has 2 states, 2 states have (on average 35.0) internal successors, (70), 2 states have internal predecessors, (70), 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 15:32:55,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:32:55,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 93 [2024-01-27 15:32:55,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:33:04,024 INFO L124 PetriNetUnfolderBase]: 98509/124778 cut-off events. [2024-01-27 15:33:04,024 INFO L125 PetriNetUnfolderBase]: For 9775/9775 co-relation queries the response was YES. [2024-01-27 15:33:04,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 255910 conditions, 124778 events. 98509/124778 cut-off events. For 9775/9775 co-relation queries the response was YES. Maximal size of possible extension queue 4802. Compared 719254 event pairs, 72876 based on Foata normal form. 22461/120914 useless extension candidates. Maximal degree in co-relation 254244. Up to 119424 conditions per place. [2024-01-27 15:33:05,044 INFO L140 encePairwiseOnDemand]: 89/93 looper letters, 57 selfloop transitions, 0 changer transitions 0/66 dead transitions. [2024-01-27 15:33:05,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 66 transitions, 294 flow [2024-01-27 15:33:05,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-01-27 15:33:05,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-01-27 15:33:05,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 91 transitions. [2024-01-27 15:33:05,060 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.489247311827957 [2024-01-27 15:33:05,062 INFO L175 Difference]: Start difference. First operand has 76 places, 70 transitions, 188 flow. Second operand 2 states and 91 transitions. [2024-01-27 15:33:05,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 66 transitions, 294 flow [2024-01-27 15:33:05,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 66 transitions, 262 flow, removed 0 selfloop flow, removed 12 redundant places. [2024-01-27 15:33:05,260 INFO L231 Difference]: Finished difference. Result has 65 places, 66 transitions, 148 flow [2024-01-27 15:33:05,262 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=148, PETRI_PLACES=65, PETRI_TRANSITIONS=66} [2024-01-27 15:33:05,265 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -11 predicate places. [2024-01-27 15:33:05,265 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 66 transitions, 148 flow [2024-01-27 15:33:05,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 35.0) internal successors, (70), 2 states have internal predecessors, (70), 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 15:33:05,266 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:33:05,266 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:33:05,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-27 15:33:05,267 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err9INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2024-01-27 15:33:05,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:33:05,267 INFO L85 PathProgramCache]: Analyzing trace with hash -931008466, now seen corresponding path program 1 times [2024-01-27 15:33:05,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:33:05,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048096071] [2024-01-27 15:33:05,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:33:05,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:33:05,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:33:05,765 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 15:33:05,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:33:05,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048096071] [2024-01-27 15:33:05,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048096071] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:33:05,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:33:05,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-27 15:33:05,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937420189] [2024-01-27 15:33:05,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:33:05,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 15:33:05,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:33:05,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 15:33:05,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-27 15:33:05,772 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 93 [2024-01-27 15:33:05,774 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 66 transitions, 148 flow. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 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 15:33:05,775 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:33:05,775 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 93 [2024-01-27 15:33:05,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:33:15,298 INFO L124 PetriNetUnfolderBase]: 139941/178630 cut-off events. [2024-01-27 15:33:15,299 INFO L125 PetriNetUnfolderBase]: For 3195/3195 co-relation queries the response was YES. [2024-01-27 15:33:15,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 354449 conditions, 178630 events. 139941/178630 cut-off events. For 3195/3195 co-relation queries the response was YES. Maximal size of possible extension queue 6905. Compared 1101931 event pairs, 107108 based on Foata normal form. 4214/144976 useless extension candidates. Maximal degree in co-relation 354446. Up to 119424 conditions per place. [2024-01-27 15:33:15,977 INFO L140 encePairwiseOnDemand]: 87/93 looper letters, 56 selfloop transitions, 2 changer transitions 44/111 dead transitions. [2024-01-27 15:33:15,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 111 transitions, 456 flow [2024-01-27 15:33:16,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-27 15:33:16,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-27 15:33:16,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 165 transitions. [2024-01-27 15:33:16,242 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4435483870967742 [2024-01-27 15:33:16,242 INFO L175 Difference]: Start difference. First operand has 65 places, 66 transitions, 148 flow. Second operand 4 states and 165 transitions. [2024-01-27 15:33:16,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 111 transitions, 456 flow [2024-01-27 15:33:16,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 111 transitions, 456 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-01-27 15:33:16,245 INFO L231 Difference]: Finished difference. Result has 70 places, 67 transitions, 166 flow [2024-01-27 15:33:16,245 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=166, PETRI_PLACES=70, PETRI_TRANSITIONS=67} [2024-01-27 15:33:16,246 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -6 predicate places. [2024-01-27 15:33:16,246 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 67 transitions, 166 flow [2024-01-27 15:33:16,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 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 15:33:16,246 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:33:16,246 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:33:16,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-27 15:33:16,247 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err9INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2024-01-27 15:33:16,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:33:16,247 INFO L85 PathProgramCache]: Analyzing trace with hash -404799454, now seen corresponding path program 1 times [2024-01-27 15:33:16,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:33:16,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640019985] [2024-01-27 15:33:16,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:33:16,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:33:16,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:33:16,673 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 15:33:16,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:33:16,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640019985] [2024-01-27 15:33:16,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640019985] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:33:16,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:33:16,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 15:33:16,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321141446] [2024-01-27 15:33:16,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:33:16,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-27 15:33:16,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:33:16,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-27 15:33:16,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-01-27 15:33:16,679 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 93 [2024-01-27 15:33:16,680 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 67 transitions, 166 flow. Second operand has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 6 states have internal predecessors, (131), 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 15:33:16,680 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:33:16,680 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 93 [2024-01-27 15:33:16,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:33:31,452 INFO L124 PetriNetUnfolderBase]: 213492/272269 cut-off events. [2024-01-27 15:33:31,452 INFO L125 PetriNetUnfolderBase]: For 15360/15360 co-relation queries the response was YES. [2024-01-27 15:33:31,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 553963 conditions, 272269 events. 213492/272269 cut-off events. For 15360/15360 co-relation queries the response was YES. Maximal size of possible extension queue 9865. Compared 1743396 event pairs, 40495 based on Foata normal form. 1/222085 useless extension candidates. Maximal degree in co-relation 553957. Up to 104601 conditions per place. [2024-01-27 15:33:33,043 INFO L140 encePairwiseOnDemand]: 84/93 looper letters, 172 selfloop transitions, 10 changer transitions 10/201 dead transitions. [2024-01-27 15:33:33,044 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 201 transitions, 867 flow [2024-01-27 15:33:33,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-27 15:33:33,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-27 15:33:33,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 282 transitions. [2024-01-27 15:33:33,050 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5053763440860215 [2024-01-27 15:33:33,050 INFO L175 Difference]: Start difference. First operand has 70 places, 67 transitions, 166 flow. Second operand 6 states and 282 transitions. [2024-01-27 15:33:33,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 201 transitions, 867 flow [2024-01-27 15:33:33,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 201 transitions, 857 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-01-27 15:33:33,275 INFO L231 Difference]: Finished difference. Result has 76 places, 75 transitions, 221 flow [2024-01-27 15:33:33,275 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=221, PETRI_PLACES=76, PETRI_TRANSITIONS=75} [2024-01-27 15:33:33,276 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 0 predicate places. [2024-01-27 15:33:33,276 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 75 transitions, 221 flow [2024-01-27 15:33:33,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 6 states have internal predecessors, (131), 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 15:33:33,277 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:33:33,277 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:33:33,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-27 15:33:33,277 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err9INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2024-01-27 15:33:33,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:33:33,278 INFO L85 PathProgramCache]: Analyzing trace with hash -1529935678, now seen corresponding path program 2 times [2024-01-27 15:33:33,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:33:33,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801837034] [2024-01-27 15:33:33,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:33:33,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:33:33,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:33:33,607 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 15:33:33,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:33:33,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801837034] [2024-01-27 15:33:33,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801837034] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:33:33,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:33:33,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 15:33:33,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823413862] [2024-01-27 15:33:33,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:33:33,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-27 15:33:33,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:33:33,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-27 15:33:33,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-01-27 15:33:33,612 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 93 [2024-01-27 15:33:33,612 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 75 transitions, 221 flow. Second operand has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 6 states have internal predecessors, (131), 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 15:33:33,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:33:33,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 93 [2024-01-27 15:33:33,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand