./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/parallel-misc-2-unrolled.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-2-unrolled.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 e0114971c55bb3ac56cba53b1f36a4abfb42729c079f90200b21654f0e6a33fd --- Real Ultimate output --- This is Ultimate 0.2.4-dev-a340643-m [2024-01-27 15:31:19,782 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-27 15:31:19,863 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-27 15:31:19,869 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-27 15:31:19,870 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-27 15:31:19,899 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-27 15:31:19,903 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-27 15:31:19,903 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-27 15:31:19,904 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-27 15:31:19,905 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-27 15:31:19,906 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-27 15:31:19,906 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-27 15:31:19,907 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-27 15:31:19,907 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-27 15:31:19,907 INFO L153 SettingsManager]: * Use SBE=true [2024-01-27 15:31:19,908 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-27 15:31:19,908 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-27 15:31:19,908 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-27 15:31:19,909 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-27 15:31:19,909 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-27 15:31:19,909 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-27 15:31:19,910 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-27 15:31:19,910 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-27 15:31:19,910 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-27 15:31:19,910 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-27 15:31:19,911 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-27 15:31:19,911 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-27 15:31:19,911 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-27 15:31:19,912 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-27 15:31:19,912 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-27 15:31:19,913 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-27 15:31:19,913 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-27 15:31:19,913 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 15:31:19,913 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-27 15:31:19,914 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-27 15:31:19,914 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-27 15:31:19,914 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-27 15:31:19,914 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-27 15:31:19,915 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-27 15:31:19,915 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-27 15:31:19,915 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-27 15:31:19,915 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-27 15:31:19,916 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-27 15:31:19,916 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e0114971c55bb3ac56cba53b1f36a4abfb42729c079f90200b21654f0e6a33fd [2024-01-27 15:31:20,188 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-27 15:31:20,214 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-27 15:31:20,217 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-27 15:31:20,218 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-27 15:31:20,218 INFO L274 PluginConnector]: CDTParser initialized [2024-01-27 15:31:20,219 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-misc-2-unrolled.wvr.c [2024-01-27 15:31:21,370 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-27 15:31:21,554 INFO L384 CDTParser]: Found 1 translation units. [2024-01-27 15:31:21,554 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-2-unrolled.wvr.c [2024-01-27 15:31:21,561 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/777503444/d91c5882a9994854b64d3fd1c13c6215/FLAG96ae05df1 [2024-01-27 15:31:21,570 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/777503444/d91c5882a9994854b64d3fd1c13c6215 [2024-01-27 15:31:21,572 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-27 15:31:21,573 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-01-27 15:31:21,574 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-27 15:31:21,576 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-27 15:31:21,583 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-27 15:31:21,584 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 03:31:21" (1/1) ... [2024-01-27 15:31:21,585 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4118a3e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:31:21, skipping insertion in model container [2024-01-27 15:31:21,585 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 03:31:21" (1/1) ... [2024-01-27 15:31:21,604 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-27 15:31:21,748 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-2-unrolled.wvr.c[2358,2371] [2024-01-27 15:31:21,752 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 15:31:21,780 INFO L202 MainTranslator]: Completed pre-run [2024-01-27 15:31:21,823 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-2-unrolled.wvr.c[2358,2371] [2024-01-27 15:31:21,823 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 15:31:21,835 INFO L206 MainTranslator]: Completed translation [2024-01-27 15:31:21,836 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:31:21 WrapperNode [2024-01-27 15:31:21,836 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-27 15:31:21,837 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-27 15:31:21,837 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-27 15:31:21,837 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-27 15:31:21,843 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:31:21" (1/1) ... [2024-01-27 15:31:21,848 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:31:21" (1/1) ... [2024-01-27 15:31:21,864 INFO L138 Inliner]: procedures = 20, calls = 28, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 63 [2024-01-27 15:31:21,865 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-27 15:31:21,865 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-27 15:31:21,865 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-27 15:31:21,866 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-27 15:31:21,877 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:31:21" (1/1) ... [2024-01-27 15:31:21,877 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:31:21" (1/1) ... [2024-01-27 15:31:21,879 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:31:21" (1/1) ... [2024-01-27 15:31:21,896 INFO L175 MemorySlicer]: Split 6 memory accesses to 3 slices as follows [2, 2, 2]. 33 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2024-01-27 15:31:21,897 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:31:21" (1/1) ... [2024-01-27 15:31:21,897 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:31:21" (1/1) ... [2024-01-27 15:31:21,902 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:31:21" (1/1) ... [2024-01-27 15:31:21,904 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:31:21" (1/1) ... [2024-01-27 15:31:21,905 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:31:21" (1/1) ... [2024-01-27 15:31:21,906 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:31:21" (1/1) ... [2024-01-27 15:31:21,917 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-27 15:31:21,918 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-27 15:31:21,919 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-27 15:31:21,919 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-27 15:31:21,920 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:31:21" (1/1) ... [2024-01-27 15:31:21,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 15:31:21,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:31:21,953 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 15:31:21,974 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 15:31:22,001 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-27 15:31:22,001 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-01-27 15:31:22,001 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-01-27 15:31:22,002 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-01-27 15:31:22,002 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-01-27 15:31:22,002 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-27 15:31:22,002 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-27 15:31:22,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-27 15:31:22,004 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-27 15:31:22,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-27 15:31:22,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-27 15:31:22,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-27 15:31:22,004 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-01-27 15:31:22,005 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-01-27 15:31:22,005 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-27 15:31:22,005 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-27 15:31:22,005 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-27 15:31:22,005 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-27 15:31:22,006 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-27 15:31:22,006 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-27 15:31:22,009 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 15:31:22,099 INFO L244 CfgBuilder]: Building ICFG [2024-01-27 15:31:22,101 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-27 15:31:22,266 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-27 15:31:22,266 INFO L293 CfgBuilder]: Performing block encoding [2024-01-27 15:31:22,417 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-27 15:31:22,417 INFO L320 CfgBuilder]: Removed 2 assume(true) statements. [2024-01-27 15:31:22,418 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 03:31:22 BoogieIcfgContainer [2024-01-27 15:31:22,418 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-27 15:31:22,420 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-27 15:31:22,420 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-27 15:31:22,428 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-27 15:31:22,429 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 03:31:21" (1/3) ... [2024-01-27 15:31:22,429 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@263ba38f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 03:31:22, skipping insertion in model container [2024-01-27 15:31:22,430 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:31:21" (2/3) ... [2024-01-27 15:31:22,430 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@263ba38f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 03:31:22, skipping insertion in model container [2024-01-27 15:31:22,430 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 03:31:22" (3/3) ... [2024-01-27 15:31:22,431 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-2-unrolled.wvr.c [2024-01-27 15:31:22,438 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2024-01-27 15:31:22,445 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-27 15:31:22,445 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-01-27 15:31:22,445 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-27 15:31:22,477 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-01-27 15:31:22,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 32 places, 27 transitions, 68 flow [2024-01-27 15:31:22,529 INFO L124 PetriNetUnfolderBase]: 2/25 cut-off events. [2024-01-27 15:31:22,530 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-01-27 15:31:22,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34 conditions, 25 events. 2/25 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 36 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 19. Up to 2 conditions per place. [2024-01-27 15:31:22,534 INFO L82 GeneralOperation]: Start removeDead. Operand has 32 places, 27 transitions, 68 flow [2024-01-27 15:31:22,538 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 29 places, 24 transitions, 60 flow [2024-01-27 15:31:22,552 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-27 15:31:22,560 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;@732cb834, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-27 15:31:22,560 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-01-27 15:31:22,579 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-27 15:31:22,590 INFO L124 PetriNetUnfolderBase]: 2/23 cut-off events. [2024-01-27 15:31:22,590 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-01-27 15:31:22,590 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:31:22,591 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:31:22,592 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:31:22,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:31:22,598 INFO L85 PathProgramCache]: Analyzing trace with hash 790120443, now seen corresponding path program 1 times [2024-01-27 15:31:22,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:31:22,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388652544] [2024-01-27 15:31:22,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:31:22,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:31:22,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:31:22,934 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 15:31:22,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:31:22,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388652544] [2024-01-27 15:31:22,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388652544] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:31:22,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:31:22,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-27 15:31:22,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811260716] [2024-01-27 15:31:22,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:31:22,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 15:31:22,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:31:22,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 15:31:22,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 15:31:22,987 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 27 [2024-01-27 15:31:22,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 24 transitions, 60 flow. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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 15:31:22,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:31:22,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 27 [2024-01-27 15:31:22,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:31:23,132 INFO L124 PetriNetUnfolderBase]: 170/311 cut-off events. [2024-01-27 15:31:23,133 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2024-01-27 15:31:23,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 623 conditions, 311 events. 170/311 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1203 event pairs, 33 based on Foata normal form. 1/306 useless extension candidates. Maximal degree in co-relation 526. Up to 256 conditions per place. [2024-01-27 15:31:23,139 INFO L140 encePairwiseOnDemand]: 23/27 looper letters, 25 selfloop transitions, 3 changer transitions 1/34 dead transitions. [2024-01-27 15:31:23,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 34 transitions, 147 flow [2024-01-27 15:31:23,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 15:31:23,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 15:31:23,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 51 transitions. [2024-01-27 15:31:23,149 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6296296296296297 [2024-01-27 15:31:23,151 INFO L175 Difference]: Start difference. First operand has 29 places, 24 transitions, 60 flow. Second operand 3 states and 51 transitions. [2024-01-27 15:31:23,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 34 transitions, 147 flow [2024-01-27 15:31:23,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 34 transitions, 133 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-01-27 15:31:23,155 INFO L231 Difference]: Finished difference. Result has 28 places, 26 transitions, 71 flow [2024-01-27 15:31:23,156 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=71, PETRI_PLACES=28, PETRI_TRANSITIONS=26} [2024-01-27 15:31:23,159 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -1 predicate places. [2024-01-27 15:31:23,159 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 26 transitions, 71 flow [2024-01-27 15:31:23,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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 15:31:23,160 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:31:23,160 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:31:23,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-27 15:31:23,161 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:31:23,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:31:23,161 INFO L85 PathProgramCache]: Analyzing trace with hash 291995320, now seen corresponding path program 1 times [2024-01-27 15:31:23,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:31:23,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286578632] [2024-01-27 15:31:23,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:31:23,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:31:23,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:31:23,329 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:31:23,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:31:23,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286578632] [2024-01-27 15:31:23,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286578632] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:31:23,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:31:23,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-27 15:31:23,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408927453] [2024-01-27 15:31:23,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:31:23,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 15:31:23,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:31:23,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 15:31:23,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-27 15:31:23,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 27 [2024-01-27 15:31:23,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 26 transitions, 71 flow. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:31:23,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:31:23,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 27 [2024-01-27 15:31:23,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:31:23,540 INFO L124 PetriNetUnfolderBase]: 210/383 cut-off events. [2024-01-27 15:31:23,540 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2024-01-27 15:31:23,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 798 conditions, 383 events. 210/383 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1574 event pairs, 33 based on Foata normal form. 0/306 useless extension candidates. Maximal degree in co-relation 204. Up to 202 conditions per place. [2024-01-27 15:31:23,548 INFO L140 encePairwiseOnDemand]: 20/27 looper letters, 37 selfloop transitions, 9 changer transitions 3/55 dead transitions. [2024-01-27 15:31:23,548 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 55 transitions, 237 flow [2024-01-27 15:31:23,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 15:31:23,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 15:31:23,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 84 transitions. [2024-01-27 15:31:23,552 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6222222222222222 [2024-01-27 15:31:23,553 INFO L175 Difference]: Start difference. First operand has 28 places, 26 transitions, 71 flow. Second operand 5 states and 84 transitions. [2024-01-27 15:31:23,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 55 transitions, 237 flow [2024-01-27 15:31:23,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 55 transitions, 233 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-27 15:31:23,559 INFO L231 Difference]: Finished difference. Result has 34 places, 33 transitions, 125 flow [2024-01-27 15:31:23,559 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=125, PETRI_PLACES=34, PETRI_TRANSITIONS=33} [2024-01-27 15:31:23,561 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 5 predicate places. [2024-01-27 15:31:23,561 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 33 transitions, 125 flow [2024-01-27 15:31:23,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:31:23,561 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:31:23,562 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:31:23,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-27 15:31:23,565 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:31:23,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:31:23,568 INFO L85 PathProgramCache]: Analyzing trace with hash -973923786, now seen corresponding path program 2 times [2024-01-27 15:31:23,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:31:23,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519082641] [2024-01-27 15:31:23,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:31:23,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:31:23,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:31:23,725 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:31:23,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:31:23,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519082641] [2024-01-27 15:31:23,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519082641] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:31:23,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:31:23,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-27 15:31:23,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225831261] [2024-01-27 15:31:23,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:31:23,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 15:31:23,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:31:23,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 15:31:23,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-27 15:31:23,737 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 27 [2024-01-27 15:31:23,737 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 33 transitions, 125 flow. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:31:23,737 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:31:23,738 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 27 [2024-01-27 15:31:23,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:31:23,864 INFO L124 PetriNetUnfolderBase]: 183/357 cut-off events. [2024-01-27 15:31:23,864 INFO L125 PetriNetUnfolderBase]: For 234/238 co-relation queries the response was YES. [2024-01-27 15:31:23,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 951 conditions, 357 events. 183/357 cut-off events. For 234/238 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1480 event pairs, 13 based on Foata normal form. 22/373 useless extension candidates. Maximal degree in co-relation 278. Up to 140 conditions per place. [2024-01-27 15:31:23,867 INFO L140 encePairwiseOnDemand]: 20/27 looper letters, 42 selfloop transitions, 12 changer transitions 3/63 dead transitions. [2024-01-27 15:31:23,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 63 transitions, 341 flow [2024-01-27 15:31:23,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 15:31:23,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 15:31:23,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 87 transitions. [2024-01-27 15:31:23,869 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6444444444444445 [2024-01-27 15:31:23,869 INFO L175 Difference]: Start difference. First operand has 34 places, 33 transitions, 125 flow. Second operand 5 states and 87 transitions. [2024-01-27 15:31:23,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 63 transitions, 341 flow [2024-01-27 15:31:23,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 63 transitions, 341 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-01-27 15:31:23,872 INFO L231 Difference]: Finished difference. Result has 42 places, 38 transitions, 211 flow [2024-01-27 15:31:23,872 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=211, PETRI_PLACES=42, PETRI_TRANSITIONS=38} [2024-01-27 15:31:23,873 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 13 predicate places. [2024-01-27 15:31:23,873 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 38 transitions, 211 flow [2024-01-27 15:31:23,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:31:23,874 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:31:23,874 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:31:23,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-27 15:31:23,874 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:31:23,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:31:23,875 INFO L85 PathProgramCache]: Analyzing trace with hash -1413429071, now seen corresponding path program 1 times [2024-01-27 15:31:23,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:31:23,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645168295] [2024-01-27 15:31:23,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:31:23,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:31:23,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:31:23,952 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:31:23,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:31:23,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645168295] [2024-01-27 15:31:23,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645168295] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:31:23,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:31:23,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-27 15:31:23,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471544524] [2024-01-27 15:31:23,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:31:23,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 15:31:23,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:31:23,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 15:31:23,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-27 15:31:23,958 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 27 [2024-01-27 15:31:23,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 38 transitions, 211 flow. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 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 15:31:23,959 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:31:23,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 27 [2024-01-27 15:31:23,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:31:24,066 INFO L124 PetriNetUnfolderBase]: 188/367 cut-off events. [2024-01-27 15:31:24,066 INFO L125 PetriNetUnfolderBase]: For 844/850 co-relation queries the response was YES. [2024-01-27 15:31:24,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1269 conditions, 367 events. 188/367 cut-off events. For 844/850 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1551 event pairs, 25 based on Foata normal form. 8/366 useless extension candidates. Maximal degree in co-relation 451. Up to 230 conditions per place. [2024-01-27 15:31:24,070 INFO L140 encePairwiseOnDemand]: 20/27 looper letters, 45 selfloop transitions, 8 changer transitions 4/63 dead transitions. [2024-01-27 15:31:24,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 63 transitions, 423 flow [2024-01-27 15:31:24,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 15:31:24,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 15:31:24,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 83 transitions. [2024-01-27 15:31:24,072 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6148148148148148 [2024-01-27 15:31:24,072 INFO L175 Difference]: Start difference. First operand has 42 places, 38 transitions, 211 flow. Second operand 5 states and 83 transitions. [2024-01-27 15:31:24,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 63 transitions, 423 flow [2024-01-27 15:31:24,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 63 transitions, 419 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-01-27 15:31:24,092 INFO L231 Difference]: Finished difference. Result has 48 places, 41 transitions, 258 flow [2024-01-27 15:31:24,092 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=258, PETRI_PLACES=48, PETRI_TRANSITIONS=41} [2024-01-27 15:31:24,093 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 19 predicate places. [2024-01-27 15:31:24,093 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 41 transitions, 258 flow [2024-01-27 15:31:24,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 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 15:31:24,094 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:31:24,094 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:31:24,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-27 15:31:24,094 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:31:24,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:31:24,095 INFO L85 PathProgramCache]: Analyzing trace with hash -481176759, now seen corresponding path program 2 times [2024-01-27 15:31:24,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:31:24,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183419060] [2024-01-27 15:31:24,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:31:24,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:31:24,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:31:24,175 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:31:24,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:31:24,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183419060] [2024-01-27 15:31:24,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183419060] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:31:24,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:31:24,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-27 15:31:24,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018291938] [2024-01-27 15:31:24,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:31:24,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 15:31:24,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:31:24,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 15:31:24,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-27 15:31:24,189 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 27 [2024-01-27 15:31:24,189 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 41 transitions, 258 flow. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 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 15:31:24,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:31:24,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 27 [2024-01-27 15:31:24,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:31:24,301 INFO L124 PetriNetUnfolderBase]: 166/335 cut-off events. [2024-01-27 15:31:24,301 INFO L125 PetriNetUnfolderBase]: For 951/959 co-relation queries the response was YES. [2024-01-27 15:31:24,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1191 conditions, 335 events. 166/335 cut-off events. For 951/959 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1258 event pairs, 29 based on Foata normal form. 18/350 useless extension candidates. Maximal degree in co-relation 885. Up to 163 conditions per place. [2024-01-27 15:31:24,305 INFO L140 encePairwiseOnDemand]: 20/27 looper letters, 42 selfloop transitions, 12 changer transitions 3/63 dead transitions. [2024-01-27 15:31:24,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 63 transitions, 474 flow [2024-01-27 15:31:24,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 15:31:24,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 15:31:24,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 80 transitions. [2024-01-27 15:31:24,308 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5925925925925926 [2024-01-27 15:31:24,308 INFO L175 Difference]: Start difference. First operand has 48 places, 41 transitions, 258 flow. Second operand 5 states and 80 transitions. [2024-01-27 15:31:24,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 63 transitions, 474 flow [2024-01-27 15:31:24,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 63 transitions, 458 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-01-27 15:31:24,319 INFO L231 Difference]: Finished difference. Result has 54 places, 44 transitions, 321 flow [2024-01-27 15:31:24,319 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=233, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=321, PETRI_PLACES=54, PETRI_TRANSITIONS=44} [2024-01-27 15:31:24,321 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 25 predicate places. [2024-01-27 15:31:24,321 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 44 transitions, 321 flow [2024-01-27 15:31:24,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 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 15:31:24,322 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:31:24,322 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 15:31:24,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-27 15:31:24,322 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:31:24,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:31:24,327 INFO L85 PathProgramCache]: Analyzing trace with hash 1934002198, now seen corresponding path program 1 times [2024-01-27 15:31:24,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:31:24,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671189228] [2024-01-27 15:31:24,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:31:24,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:31:24,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:31:24,536 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:31:24,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:31:24,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671189228] [2024-01-27 15:31:24,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671189228] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 15:31:24,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [757628033] [2024-01-27 15:31:24,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:31:24,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:31:24,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:31:24,540 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 15:31:24,571 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 15:31:24,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:31:24,631 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 10 conjunts are in the unsatisfiable core [2024-01-27 15:31:24,635 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:31:24,723 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:31:24,724 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-27 15:31:24,799 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:31:24,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [757628033] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-27 15:31:24,800 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-27 15:31:24,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2024-01-27 15:31:24,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828581459] [2024-01-27 15:31:24,800 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-27 15:31:24,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-27 15:31:24,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:31:24,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-27 15:31:24,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-01-27 15:31:24,808 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 27 [2024-01-27 15:31:24,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 44 transitions, 321 flow. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 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 15:31:24,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:31:24,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 27 [2024-01-27 15:31:24,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:31:24,945 INFO L124 PetriNetUnfolderBase]: 173/336 cut-off events. [2024-01-27 15:31:24,945 INFO L125 PetriNetUnfolderBase]: For 1133/1151 co-relation queries the response was YES. [2024-01-27 15:31:24,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1267 conditions, 336 events. 173/336 cut-off events. For 1133/1151 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1236 event pairs, 39 based on Foata normal form. 3/326 useless extension candidates. Maximal degree in co-relation 997. Up to 112 conditions per place. [2024-01-27 15:31:24,948 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 0 selfloop transitions, 0 changer transitions 63/63 dead transitions. [2024-01-27 15:31:24,949 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 63 transitions, 547 flow [2024-01-27 15:31:24,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-27 15:31:24,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-27 15:31:24,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 78 transitions. [2024-01-27 15:31:24,950 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48148148148148145 [2024-01-27 15:31:24,950 INFO L175 Difference]: Start difference. First operand has 54 places, 44 transitions, 321 flow. Second operand 6 states and 78 transitions. [2024-01-27 15:31:24,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 63 transitions, 547 flow [2024-01-27 15:31:24,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 63 transitions, 524 flow, removed 10 selfloop flow, removed 1 redundant places. [2024-01-27 15:31:24,956 INFO L231 Difference]: Finished difference. Result has 56 places, 0 transitions, 0 flow [2024-01-27 15:31:24,956 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=56, PETRI_TRANSITIONS=0} [2024-01-27 15:31:24,959 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 27 predicate places. [2024-01-27 15:31:24,959 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 0 transitions, 0 flow [2024-01-27 15:31:24,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 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 15:31:24,964 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2024-01-27 15:31:24,965 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2024-01-27 15:31:24,965 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2024-01-27 15:31:24,981 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 15:31:25,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-01-27 15:31:25,180 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1] [2024-01-27 15:31:25,183 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-01-27 15:31:25,183 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-01-27 15:31:25,188 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.01 03:31:25 BasicIcfg [2024-01-27 15:31:25,188 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-01-27 15:31:25,188 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-01-27 15:31:25,188 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-01-27 15:31:25,188 INFO L274 PluginConnector]: Witness Printer initialized [2024-01-27 15:31:25,189 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 03:31:22" (3/4) ... [2024-01-27 15:31:25,190 INFO L137 WitnessPrinter]: Generating witness for correct program [2024-01-27 15:31:25,193 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-01-27 15:31:25,194 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-01-27 15:31:25,201 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 55 nodes and edges [2024-01-27 15:31:25,202 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2024-01-27 15:31:25,202 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2024-01-27 15:31:25,202 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-01-27 15:31:25,285 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-01-27 15:31:25,286 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-01-27 15:31:25,286 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-01-27 15:31:25,287 INFO L158 Benchmark]: Toolchain (without parser) took 3713.63ms. Allocated memory was 180.4MB in the beginning and 251.7MB in the end (delta: 71.3MB). Free memory was 114.3MB in the beginning and 93.0MB in the end (delta: 21.3MB). Peak memory consumption was 94.5MB. Max. memory is 16.1GB. [2024-01-27 15:31:25,287 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 180.4MB. Free memory was 141.1MB in the beginning and 141.0MB in the end (delta: 167.8kB). There was no memory consumed. Max. memory is 16.1GB. [2024-01-27 15:31:25,287 INFO L158 Benchmark]: CACSL2BoogieTranslator took 262.34ms. Allocated memory is still 180.4MB. Free memory was 114.1MB in the beginning and 151.6MB in the end (delta: -37.5MB). Peak memory consumption was 12.9MB. Max. memory is 16.1GB. [2024-01-27 15:31:25,287 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.77ms. Allocated memory is still 180.4MB. Free memory was 151.6MB in the beginning and 150.7MB in the end (delta: 915.4kB). There was no memory consumed. Max. memory is 16.1GB. [2024-01-27 15:31:25,288 INFO L158 Benchmark]: Boogie Preprocessor took 52.15ms. Allocated memory is still 180.4MB. Free memory was 150.6MB in the beginning and 148.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-27 15:31:25,288 INFO L158 Benchmark]: RCFGBuilder took 499.67ms. Allocated memory is still 180.4MB. Free memory was 148.5MB in the beginning and 120.3MB in the end (delta: 28.2MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2024-01-27 15:31:25,288 INFO L158 Benchmark]: TraceAbstraction took 2767.82ms. Allocated memory was 180.4MB in the beginning and 251.7MB in the end (delta: 71.3MB). Free memory was 119.4MB in the beginning and 97.9MB in the end (delta: 21.5MB). Peak memory consumption was 96.4MB. Max. memory is 16.1GB. [2024-01-27 15:31:25,289 INFO L158 Benchmark]: Witness Printer took 97.94ms. Allocated memory is still 251.7MB. Free memory was 96.8MB in the beginning and 93.0MB in the end (delta: 3.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-01-27 15:31:25,290 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 180.4MB. Free memory was 141.1MB in the beginning and 141.0MB in the end (delta: 167.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 262.34ms. Allocated memory is still 180.4MB. Free memory was 114.1MB in the beginning and 151.6MB in the end (delta: -37.5MB). Peak memory consumption was 12.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 27.77ms. Allocated memory is still 180.4MB. Free memory was 151.6MB in the beginning and 150.7MB in the end (delta: 915.4kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 52.15ms. Allocated memory is still 180.4MB. Free memory was 150.6MB in the beginning and 148.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 499.67ms. Allocated memory is still 180.4MB. Free memory was 148.5MB in the beginning and 120.3MB in the end (delta: 28.2MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * TraceAbstraction took 2767.82ms. Allocated memory was 180.4MB in the beginning and 251.7MB in the end (delta: 71.3MB). Free memory was 119.4MB in the beginning and 97.9MB in the end (delta: 21.5MB). Peak memory consumption was 96.4MB. Max. memory is 16.1GB. * Witness Printer took 97.94ms. Allocated memory is still 251.7MB. Free memory was 96.8MB in the beginning and 93.0MB in the end (delta: 3.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 87]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 42 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.7s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 107 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 98 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 14 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 453 IncrementalHoareTripleChecker+Invalid, 467 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 14 mSolverCounterUnsat, 0 mSDtfsCounter, 453 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 70 GetRequests, 44 SyntacticMatches, 9 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=321occurred in iteration=5, InterpolantAutomatonStates: 29, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 138 NumberOfCodeBlocks, 138 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 154 ConstructedInterpolants, 0 QuantifiedInterpolants, 1342 SizeOfPredicates, 3 NumberOfNonLiveVariables, 126 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 8 InterpolantComputations, 5 PerfectInterpolantSequences, 4/10 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-01-27 15:31:25,322 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE