./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-atomic/szymanski.i --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/pthread-atomic/szymanski.i -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 bc84ca2197caec735a8480f9d61b820c686ed9ae52711f2c7500999694c2ad40 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-a340643-m [2024-01-27 15:06:39,889 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-27 15:06:39,946 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-27 15:06:39,951 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-27 15:06:39,951 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-27 15:06:39,986 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-27 15:06:39,986 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-27 15:06:39,987 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-27 15:06:39,987 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-27 15:06:39,990 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-27 15:06:39,990 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-27 15:06:39,997 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-27 15:06:39,998 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-27 15:06:39,999 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-27 15:06:39,999 INFO L153 SettingsManager]: * Use SBE=true [2024-01-27 15:06:39,999 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-27 15:06:39,999 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-27 15:06:40,000 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-27 15:06:40,000 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-27 15:06:40,000 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-27 15:06:40,000 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-27 15:06:40,001 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-27 15:06:40,001 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-27 15:06:40,001 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-27 15:06:40,002 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-27 15:06:40,002 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-27 15:06:40,002 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-27 15:06:40,003 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-27 15:06:40,003 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-27 15:06:40,004 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-27 15:06:40,005 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-27 15:06:40,005 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-27 15:06:40,005 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 15:06:40,005 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-27 15:06:40,005 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-27 15:06:40,006 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-27 15:06:40,006 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-27 15:06:40,006 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-27 15:06:40,006 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-27 15:06:40,006 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-27 15:06:40,006 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-27 15:06:40,007 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-27 15:06:40,007 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-27 15:06:40,007 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bc84ca2197caec735a8480f9d61b820c686ed9ae52711f2c7500999694c2ad40 [2024-01-27 15:06:40,218 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-27 15:06:40,240 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-27 15:06:40,242 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-27 15:06:40,243 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-27 15:06:40,243 INFO L274 PluginConnector]: CDTParser initialized [2024-01-27 15:06:40,244 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/szymanski.i [2024-01-27 15:06:41,292 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-27 15:06:41,502 INFO L384 CDTParser]: Found 1 translation units. [2024-01-27 15:06:41,503 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/szymanski.i [2024-01-27 15:06:41,518 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/160ffe037/7d50def3d4a84af1a66f1a1dda4d82de/FLAGffbcbf9fb [2024-01-27 15:06:41,533 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/160ffe037/7d50def3d4a84af1a66f1a1dda4d82de [2024-01-27 15:06:41,535 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-27 15:06:41,537 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-01-27 15:06:41,540 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-27 15:06:41,541 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-27 15:06:41,545 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-27 15:06:41,545 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 03:06:41" (1/1) ... [2024-01-27 15:06:41,547 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@666f4783 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:06:41, skipping insertion in model container [2024-01-27 15:06:41,548 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 03:06:41" (1/1) ... [2024-01-27 15:06:41,599 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-27 15:06:41,880 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/szymanski.i[31505,31518] [2024-01-27 15:06:41,891 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/szymanski.i[32915,32928] [2024-01-27 15:06:41,898 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 15:06:41,906 INFO L202 MainTranslator]: Completed pre-run [2024-01-27 15:06:41,947 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/szymanski.i[31505,31518] [2024-01-27 15:06:41,958 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/szymanski.i[32915,32928] [2024-01-27 15:06:41,967 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 15:06:42,005 INFO L206 MainTranslator]: Completed translation [2024-01-27 15:06:42,005 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:06:42 WrapperNode [2024-01-27 15:06:42,005 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-27 15:06:42,006 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-27 15:06:42,006 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-27 15:06:42,006 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-27 15:06:42,011 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:06:42" (1/1) ... [2024-01-27 15:06:42,023 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:06:42" (1/1) ... [2024-01-27 15:06:42,038 INFO L138 Inliner]: procedures = 170, calls = 74, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 41 [2024-01-27 15:06:42,039 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-27 15:06:42,040 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-27 15:06:42,041 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-27 15:06:42,041 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-27 15:06:42,049 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:06:42" (1/1) ... [2024-01-27 15:06:42,050 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:06:42" (1/1) ... [2024-01-27 15:06:42,063 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:06:42" (1/1) ... [2024-01-27 15:06:42,079 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 15:06:42,087 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:06:42" (1/1) ... [2024-01-27 15:06:42,088 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:06:42" (1/1) ... [2024-01-27 15:06:42,092 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:06:42" (1/1) ... [2024-01-27 15:06:42,095 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:06:42" (1/1) ... [2024-01-27 15:06:42,112 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:06:42" (1/1) ... [2024-01-27 15:06:42,113 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:06:42" (1/1) ... [2024-01-27 15:06:42,115 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-27 15:06:42,116 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-27 15:06:42,116 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-27 15:06:42,116 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-27 15:06:42,116 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:06:42" (1/1) ... [2024-01-27 15:06:42,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 15:06:42,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:06:42,162 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 15:06:42,181 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 15:06:42,203 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-27 15:06:42,204 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-27 15:06:42,204 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-27 15:06:42,204 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2024-01-27 15:06:42,204 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2024-01-27 15:06:42,204 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-01-27 15:06:42,204 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-01-27 15:06:42,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-27 15:06:42,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-27 15:06:42,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-27 15:06:42,205 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-01-27 15:06:42,205 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-27 15:06:42,205 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-27 15:06:42,205 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-27 15:06:42,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-27 15:06:42,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-27 15:06:42,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-27 15:06:42,206 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-01-27 15:06:42,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-27 15:06:42,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-27 15:06:42,207 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 15:06:42,408 INFO L244 CfgBuilder]: Building ICFG [2024-01-27 15:06:42,410 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-27 15:06:42,672 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-27 15:06:42,672 INFO L293 CfgBuilder]: Performing block encoding [2024-01-27 15:06:42,775 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-27 15:06:42,776 INFO L320 CfgBuilder]: Removed 8 assume(true) statements. [2024-01-27 15:06:42,776 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 03:06:42 BoogieIcfgContainer [2024-01-27 15:06:42,776 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-27 15:06:42,777 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-27 15:06:42,778 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-27 15:06:42,780 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-27 15:06:42,780 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 03:06:41" (1/3) ... [2024-01-27 15:06:42,780 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4861c6a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 03:06:42, skipping insertion in model container [2024-01-27 15:06:42,780 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:06:42" (2/3) ... [2024-01-27 15:06:42,781 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4861c6a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 03:06:42, skipping insertion in model container [2024-01-27 15:06:42,781 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 03:06:42" (3/3) ... [2024-01-27 15:06:42,782 INFO L112 eAbstractionObserver]: Analyzing ICFG szymanski.i [2024-01-27 15:06:42,805 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2024-01-27 15:06:42,813 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-27 15:06:42,813 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-01-27 15:06:42,813 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-27 15:06:42,867 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-01-27 15:06:42,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 66 places, 71 transitions, 156 flow [2024-01-27 15:06:42,931 INFO L124 PetriNetUnfolderBase]: 12/69 cut-off events. [2024-01-27 15:06:42,931 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-01-27 15:06:42,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 69 events. 12/69 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 128 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 65. Up to 2 conditions per place. [2024-01-27 15:06:42,935 INFO L82 GeneralOperation]: Start removeDead. Operand has 66 places, 71 transitions, 156 flow [2024-01-27 15:06:42,938 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 62 places, 67 transitions, 143 flow [2024-01-27 15:06:42,949 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-27 15:06:42,956 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;@6260ad19, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-27 15:06:42,956 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-01-27 15:06:42,970 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-27 15:06:42,970 INFO L124 PetriNetUnfolderBase]: 7/43 cut-off events. [2024-01-27 15:06:42,970 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-27 15:06:42,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:06:42,971 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:06:42,971 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-01-27 15:06:42,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:06:42,975 INFO L85 PathProgramCache]: Analyzing trace with hash -481980936, now seen corresponding path program 1 times [2024-01-27 15:06:42,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:06:42,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259474087] [2024-01-27 15:06:42,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:06:42,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:06:43,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:06:43,208 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 15:06:43,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:06:43,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259474087] [2024-01-27 15:06:43,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259474087] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:06:43,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:06:43,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-27 15:06:43,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068533153] [2024-01-27 15:06:43,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:06:43,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 15:06:43,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:06:43,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 15:06:43,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 15:06:43,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 71 [2024-01-27 15:06:43,335 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 67 transitions, 143 flow. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 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 15:06:43,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:06:43,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 71 [2024-01-27 15:06:43,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:06:43,465 INFO L124 PetriNetUnfolderBase]: 217/578 cut-off events. [2024-01-27 15:06:43,466 INFO L125 PetriNetUnfolderBase]: For 22/22 co-relation queries the response was YES. [2024-01-27 15:06:43,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 921 conditions, 578 events. 217/578 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 3278 event pairs, 57 based on Foata normal form. 55/581 useless extension candidates. Maximal degree in co-relation 808. Up to 168 conditions per place. [2024-01-27 15:06:43,473 INFO L140 encePairwiseOnDemand]: 64/71 looper letters, 25 selfloop transitions, 3 changer transitions 1/75 dead transitions. [2024-01-27 15:06:43,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 75 transitions, 220 flow [2024-01-27 15:06:43,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 15:06:43,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 15:06:43,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 178 transitions. [2024-01-27 15:06:43,483 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8356807511737089 [2024-01-27 15:06:43,485 INFO L175 Difference]: Start difference. First operand has 62 places, 67 transitions, 143 flow. Second operand 3 states and 178 transitions. [2024-01-27 15:06:43,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 75 transitions, 220 flow [2024-01-27 15:06:43,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 75 transitions, 213 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-01-27 15:06:43,493 INFO L231 Difference]: Finished difference. Result has 63 places, 66 transitions, 154 flow [2024-01-27 15:06:43,495 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=154, PETRI_PLACES=63, PETRI_TRANSITIONS=66} [2024-01-27 15:06:43,497 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 1 predicate places. [2024-01-27 15:06:43,497 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 66 transitions, 154 flow [2024-01-27 15:06:43,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 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 15:06:43,498 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:06:43,498 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:06:43,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-27 15:06:43,499 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr2Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-01-27 15:06:43,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:06:43,499 INFO L85 PathProgramCache]: Analyzing trace with hash -154974577, now seen corresponding path program 1 times [2024-01-27 15:06:43,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:06:43,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612519708] [2024-01-27 15:06:43,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:06:43,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:06:43,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:06:43,581 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 15:06:43,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:06:43,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612519708] [2024-01-27 15:06:43,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612519708] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:06:43,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:06:43,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-27 15:06:43,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613105490] [2024-01-27 15:06:43,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:06:43,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 15:06:43,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:06:43,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 15:06:43,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 15:06:43,593 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 71 [2024-01-27 15:06:43,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 66 transitions, 154 flow. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 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 15:06:43,595 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:06:43,595 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 71 [2024-01-27 15:06:43,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:06:43,674 INFO L124 PetriNetUnfolderBase]: 235/607 cut-off events. [2024-01-27 15:06:43,674 INFO L125 PetriNetUnfolderBase]: For 137/137 co-relation queries the response was YES. [2024-01-27 15:06:43,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1088 conditions, 607 events. 235/607 cut-off events. For 137/137 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3409 event pairs, 81 based on Foata normal form. 22/591 useless extension candidates. Maximal degree in co-relation 406. Up to 227 conditions per place. [2024-01-27 15:06:43,679 INFO L140 encePairwiseOnDemand]: 67/71 looper letters, 23 selfloop transitions, 2 changer transitions 4/75 dead transitions. [2024-01-27 15:06:43,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 75 transitions, 231 flow [2024-01-27 15:06:43,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 15:06:43,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 15:06:43,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 175 transitions. [2024-01-27 15:06:43,685 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8215962441314554 [2024-01-27 15:06:43,685 INFO L175 Difference]: Start difference. First operand has 63 places, 66 transitions, 154 flow. Second operand 3 states and 175 transitions. [2024-01-27 15:06:43,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 75 transitions, 231 flow [2024-01-27 15:06:43,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 75 transitions, 225 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-27 15:06:43,688 INFO L231 Difference]: Finished difference. Result has 64 places, 66 transitions, 158 flow [2024-01-27 15:06:43,688 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=158, PETRI_PLACES=64, PETRI_TRANSITIONS=66} [2024-01-27 15:06:43,689 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 2 predicate places. [2024-01-27 15:06:43,689 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 66 transitions, 158 flow [2024-01-27 15:06:43,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 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 15:06:43,690 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:06:43,691 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] [2024-01-27 15:06:43,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-27 15:06:43,692 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-01-27 15:06:43,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:06:43,693 INFO L85 PathProgramCache]: Analyzing trace with hash 395763993, now seen corresponding path program 1 times [2024-01-27 15:06:43,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:06:43,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802529942] [2024-01-27 15:06:43,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:06:43,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:06:43,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:06:43,797 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 15:06:43,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:06:43,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802529942] [2024-01-27 15:06:43,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802529942] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:06:43,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:06:43,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-27 15:06:43,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581863852] [2024-01-27 15:06:43,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:06:43,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 15:06:43,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:06:43,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 15:06:43,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-27 15:06:43,844 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 71 [2024-01-27 15:06:43,845 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 66 transitions, 158 flow. Second operand has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 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 15:06:43,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:06:43,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 71 [2024-01-27 15:06:43,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:06:44,008 INFO L124 PetriNetUnfolderBase]: 822/1693 cut-off events. [2024-01-27 15:06:44,009 INFO L125 PetriNetUnfolderBase]: For 261/261 co-relation queries the response was YES. [2024-01-27 15:06:44,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3180 conditions, 1693 events. 822/1693 cut-off events. For 261/261 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 9869 event pairs, 333 based on Foata normal form. 36/1648 useless extension candidates. Maximal degree in co-relation 2673. Up to 729 conditions per place. [2024-01-27 15:06:44,013 INFO L140 encePairwiseOnDemand]: 54/71 looper letters, 45 selfloop transitions, 7 changer transitions 30/113 dead transitions. [2024-01-27 15:06:44,013 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 113 transitions, 431 flow [2024-01-27 15:06:44,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 15:06:44,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 15:06:44,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 255 transitions. [2024-01-27 15:06:44,015 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7183098591549296 [2024-01-27 15:06:44,015 INFO L175 Difference]: Start difference. First operand has 64 places, 66 transitions, 158 flow. Second operand 5 states and 255 transitions. [2024-01-27 15:06:44,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 113 transitions, 431 flow [2024-01-27 15:06:44,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 113 transitions, 427 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-27 15:06:44,017 INFO L231 Difference]: Finished difference. Result has 70 places, 70 transitions, 232 flow [2024-01-27 15:06:44,017 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=232, PETRI_PLACES=70, PETRI_TRANSITIONS=70} [2024-01-27 15:06:44,018 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 8 predicate places. [2024-01-27 15:06:44,018 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 70 transitions, 232 flow [2024-01-27 15:06:44,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 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 15:06:44,018 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:06:44,019 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] [2024-01-27 15:06:44,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-27 15:06:44,019 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-01-27 15:06:44,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:06:44,019 INFO L85 PathProgramCache]: Analyzing trace with hash -868945097, now seen corresponding path program 2 times [2024-01-27 15:06:44,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:06:44,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003350129] [2024-01-27 15:06:44,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:06:44,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:06:44,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:06:44,058 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 15:06:44,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:06:44,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003350129] [2024-01-27 15:06:44,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003350129] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:06:44,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:06:44,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-27 15:06:44,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399314699] [2024-01-27 15:06:44,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:06:44,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 15:06:44,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:06:44,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 15:06:44,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-27 15:06:44,082 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 71 [2024-01-27 15:06:44,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 70 transitions, 232 flow. Second operand has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:06:44,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:06:44,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 71 [2024-01-27 15:06:44,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:06:44,333 INFO L124 PetriNetUnfolderBase]: 1139/2314 cut-off events. [2024-01-27 15:06:44,334 INFO L125 PetriNetUnfolderBase]: For 1049/1083 co-relation queries the response was YES. [2024-01-27 15:06:44,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5166 conditions, 2314 events. 1139/2314 cut-off events. For 1049/1083 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 14241 event pairs, 537 based on Foata normal form. 30/2195 useless extension candidates. Maximal degree in co-relation 4402. Up to 1189 conditions per place. [2024-01-27 15:06:44,345 INFO L140 encePairwiseOnDemand]: 54/71 looper letters, 54 selfloop transitions, 13 changer transitions 26/126 dead transitions. [2024-01-27 15:06:44,345 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 126 transitions, 556 flow [2024-01-27 15:06:44,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 15:06:44,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 15:06:44,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 257 transitions. [2024-01-27 15:06:44,347 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.723943661971831 [2024-01-27 15:06:44,347 INFO L175 Difference]: Start difference. First operand has 70 places, 70 transitions, 232 flow. Second operand 5 states and 257 transitions. [2024-01-27 15:06:44,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 126 transitions, 556 flow [2024-01-27 15:06:44,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 126 transitions, 530 flow, removed 13 selfloop flow, removed 0 redundant places. [2024-01-27 15:06:44,357 INFO L231 Difference]: Finished difference. Result has 78 places, 81 transitions, 334 flow [2024-01-27 15:06:44,357 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=334, PETRI_PLACES=78, PETRI_TRANSITIONS=81} [2024-01-27 15:06:44,358 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 16 predicate places. [2024-01-27 15:06:44,359 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 81 transitions, 334 flow [2024-01-27 15:06:44,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:06:44,359 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:06:44,359 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] [2024-01-27 15:06:44,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-27 15:06:44,360 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-01-27 15:06:44,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:06:44,360 INFO L85 PathProgramCache]: Analyzing trace with hash -1924963385, now seen corresponding path program 3 times [2024-01-27 15:06:44,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:06:44,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039738617] [2024-01-27 15:06:44,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:06:44,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:06:44,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:06:44,418 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 15:06:44,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:06:44,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039738617] [2024-01-27 15:06:44,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039738617] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:06:44,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:06:44,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-27 15:06:44,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460156108] [2024-01-27 15:06:44,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:06:44,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 15:06:44,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:06:44,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 15:06:44,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-27 15:06:44,437 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 71 [2024-01-27 15:06:44,438 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 81 transitions, 334 flow. Second operand has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:06:44,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:06:44,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 71 [2024-01-27 15:06:44,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:06:44,689 INFO L124 PetriNetUnfolderBase]: 1221/2625 cut-off events. [2024-01-27 15:06:44,690 INFO L125 PetriNetUnfolderBase]: For 1444/1457 co-relation queries the response was YES. [2024-01-27 15:06:44,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6471 conditions, 2625 events. 1221/2625 cut-off events. For 1444/1457 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 17632 event pairs, 495 based on Foata normal form. 62/2582 useless extension candidates. Maximal degree in co-relation 3747. Up to 1182 conditions per place. [2024-01-27 15:06:44,702 INFO L140 encePairwiseOnDemand]: 54/71 looper letters, 74 selfloop transitions, 20 changer transitions 2/136 dead transitions. [2024-01-27 15:06:44,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 136 transitions, 717 flow [2024-01-27 15:06:44,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 15:06:44,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 15:06:44,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 253 transitions. [2024-01-27 15:06:44,704 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7126760563380282 [2024-01-27 15:06:44,704 INFO L175 Difference]: Start difference. First operand has 78 places, 81 transitions, 334 flow. Second operand 5 states and 253 transitions. [2024-01-27 15:06:44,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 136 transitions, 717 flow [2024-01-27 15:06:44,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 136 transitions, 707 flow, removed 5 selfloop flow, removed 0 redundant places. [2024-01-27 15:06:44,712 INFO L231 Difference]: Finished difference. Result has 86 places, 99 transitions, 525 flow [2024-01-27 15:06:44,712 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=525, PETRI_PLACES=86, PETRI_TRANSITIONS=99} [2024-01-27 15:06:44,713 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 24 predicate places. [2024-01-27 15:06:44,713 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 99 transitions, 525 flow [2024-01-27 15:06:44,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:06:44,713 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:06:44,713 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] [2024-01-27 15:06:44,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-27 15:06:44,714 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-01-27 15:06:44,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:06:44,714 INFO L85 PathProgramCache]: Analyzing trace with hash 2005077507, now seen corresponding path program 4 times [2024-01-27 15:06:44,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:06:44,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734777457] [2024-01-27 15:06:44,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:06:44,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:06:44,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:06:44,742 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 15:06:44,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:06:44,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734777457] [2024-01-27 15:06:44,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734777457] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:06:44,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:06:44,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-27 15:06:44,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712484491] [2024-01-27 15:06:44,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:06:44,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 15:06:44,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:06:44,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 15:06:44,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-27 15:06:44,761 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 71 [2024-01-27 15:06:44,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 99 transitions, 525 flow. Second operand has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 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 15:06:44,762 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:06:44,762 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 71 [2024-01-27 15:06:44,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:06:45,010 INFO L124 PetriNetUnfolderBase]: 1301/2906 cut-off events. [2024-01-27 15:06:45,010 INFO L125 PetriNetUnfolderBase]: For 3853/3951 co-relation queries the response was YES. [2024-01-27 15:06:45,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8170 conditions, 2906 events. 1301/2906 cut-off events. For 3853/3951 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 20405 event pairs, 401 based on Foata normal form. 84/2950 useless extension candidates. Maximal degree in co-relation 5572. Up to 1017 conditions per place. [2024-01-27 15:06:45,026 INFO L140 encePairwiseOnDemand]: 53/71 looper letters, 74 selfloop transitions, 35 changer transitions 6/158 dead transitions. [2024-01-27 15:06:45,026 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 158 transitions, 1070 flow [2024-01-27 15:06:45,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 15:06:45,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 15:06:45,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 260 transitions. [2024-01-27 15:06:45,028 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7323943661971831 [2024-01-27 15:06:45,028 INFO L175 Difference]: Start difference. First operand has 86 places, 99 transitions, 525 flow. Second operand 5 states and 260 transitions. [2024-01-27 15:06:45,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 158 transitions, 1070 flow [2024-01-27 15:06:45,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 158 transitions, 1054 flow, removed 8 selfloop flow, removed 0 redundant places. [2024-01-27 15:06:45,038 INFO L231 Difference]: Finished difference. Result has 94 places, 126 transitions, 894 flow [2024-01-27 15:06:45,038 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=509, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=894, PETRI_PLACES=94, PETRI_TRANSITIONS=126} [2024-01-27 15:06:45,039 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 32 predicate places. [2024-01-27 15:06:45,039 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 126 transitions, 894 flow [2024-01-27 15:06:45,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 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 15:06:45,039 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:06:45,039 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] [2024-01-27 15:06:45,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-27 15:06:45,040 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-01-27 15:06:45,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:06:45,040 INFO L85 PathProgramCache]: Analyzing trace with hash 814619717, now seen corresponding path program 5 times [2024-01-27 15:06:45,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:06:45,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82485480] [2024-01-27 15:06:45,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:06:45,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:06:45,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:06:45,069 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 15:06:45,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:06:45,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82485480] [2024-01-27 15:06:45,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82485480] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:06:45,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:06:45,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-27 15:06:45,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971894848] [2024-01-27 15:06:45,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:06:45,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 15:06:45,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:06:45,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 15:06:45,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-27 15:06:45,086 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 71 [2024-01-27 15:06:45,086 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 126 transitions, 894 flow. Second operand has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 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 15:06:45,086 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:06:45,086 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 71 [2024-01-27 15:06:45,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:06:45,376 INFO L124 PetriNetUnfolderBase]: 1459/3070 cut-off events. [2024-01-27 15:06:45,377 INFO L125 PetriNetUnfolderBase]: For 6403/6514 co-relation queries the response was YES. [2024-01-27 15:06:45,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9749 conditions, 3070 events. 1459/3070 cut-off events. For 6403/6514 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 20670 event pairs, 547 based on Foata normal form. 154/3118 useless extension candidates. Maximal degree in co-relation 6469. Up to 1421 conditions per place. [2024-01-27 15:06:45,389 INFO L140 encePairwiseOnDemand]: 54/71 looper letters, 0 selfloop transitions, 0 changer transitions 170/170 dead transitions. [2024-01-27 15:06:45,390 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 170 transitions, 1253 flow [2024-01-27 15:06:45,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 15:06:45,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 15:06:45,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 257 transitions. [2024-01-27 15:06:45,391 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.723943661971831 [2024-01-27 15:06:45,391 INFO L175 Difference]: Start difference. First operand has 94 places, 126 transitions, 894 flow. Second operand 5 states and 257 transitions. [2024-01-27 15:06:45,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 170 transitions, 1253 flow [2024-01-27 15:06:45,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 170 transitions, 1236 flow, removed 7 selfloop flow, removed 1 redundant places. [2024-01-27 15:06:45,408 INFO L231 Difference]: Finished difference. Result has 93 places, 0 transitions, 0 flow [2024-01-27 15:06:45,408 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=814, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=93, PETRI_TRANSITIONS=0} [2024-01-27 15:06:45,409 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 31 predicate places. [2024-01-27 15:06:45,409 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 0 transitions, 0 flow [2024-01-27 15:06:45,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 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 15:06:45,411 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2024-01-27 15:06:45,411 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2024-01-27 15:06:45,412 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2024-01-27 15:06:45,412 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2024-01-27 15:06:45,412 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2024-01-27 15:06:45,412 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2024-01-27 15:06:45,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-01-27 15:06:45,412 INFO L445 BasicCegarLoop]: Path program histogram: [5, 1, 1] [2024-01-27 15:06:45,416 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-01-27 15:06:45,416 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-01-27 15:06:45,420 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.01 03:06:45 BasicIcfg [2024-01-27 15:06:45,420 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-01-27 15:06:45,420 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-01-27 15:06:45,420 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-01-27 15:06:45,421 INFO L274 PluginConnector]: Witness Printer initialized [2024-01-27 15:06:45,421 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 03:06:42" (3/4) ... [2024-01-27 15:06:45,422 INFO L137 WitnessPrinter]: Generating witness for correct program [2024-01-27 15:06:45,424 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thr2 [2024-01-27 15:06:45,424 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thr1 [2024-01-27 15:06:45,426 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 32 nodes and edges [2024-01-27 15:06:45,426 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2024-01-27 15:06:45,426 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-01-27 15:06:45,427 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-01-27 15:06:45,480 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-01-27 15:06:45,481 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-01-27 15:06:45,481 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-01-27 15:06:45,481 INFO L158 Benchmark]: Toolchain (without parser) took 3944.66ms. Allocated memory was 146.8MB in the beginning and 272.6MB in the end (delta: 125.8MB). Free memory was 74.2MB in the beginning and 137.3MB in the end (delta: -63.0MB). Peak memory consumption was 64.5MB. Max. memory is 16.1GB. [2024-01-27 15:06:45,482 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 146.8MB. Free memory is still 110.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-01-27 15:06:45,482 INFO L158 Benchmark]: CACSL2BoogieTranslator took 465.30ms. Allocated memory was 146.8MB in the beginning and 182.5MB in the end (delta: 35.7MB). Free memory was 74.0MB in the beginning and 143.1MB in the end (delta: -69.1MB). Peak memory consumption was 16.9MB. Max. memory is 16.1GB. [2024-01-27 15:06:45,482 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.42ms. Allocated memory is still 182.5MB. Free memory was 142.1MB in the beginning and 141.0MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-27 15:06:45,483 INFO L158 Benchmark]: Boogie Preprocessor took 74.73ms. Allocated memory is still 182.5MB. Free memory was 141.0MB in the beginning and 137.9MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-27 15:06:45,483 INFO L158 Benchmark]: RCFGBuilder took 660.47ms. Allocated memory is still 182.5MB. Free memory was 137.9MB in the beginning and 117.0MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-01-27 15:06:45,483 INFO L158 Benchmark]: TraceAbstraction took 2642.45ms. Allocated memory was 182.5MB in the beginning and 272.6MB in the end (delta: 90.2MB). Free memory was 115.8MB in the beginning and 141.5MB in the end (delta: -25.7MB). Peak memory consumption was 135.8MB. Max. memory is 16.1GB. [2024-01-27 15:06:45,483 INFO L158 Benchmark]: Witness Printer took 60.73ms. Allocated memory is still 272.6MB. Free memory was 141.5MB in the beginning and 137.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-01-27 15:06:45,484 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 146.8MB. Free memory is still 110.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 465.30ms. Allocated memory was 146.8MB in the beginning and 182.5MB in the end (delta: 35.7MB). Free memory was 74.0MB in the beginning and 143.1MB in the end (delta: -69.1MB). Peak memory consumption was 16.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.42ms. Allocated memory is still 182.5MB. Free memory was 142.1MB in the beginning and 141.0MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 74.73ms. Allocated memory is still 182.5MB. Free memory was 141.0MB in the beginning and 137.9MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 660.47ms. Allocated memory is still 182.5MB. Free memory was 137.9MB in the beginning and 117.0MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 2642.45ms. Allocated memory was 182.5MB in the beginning and 272.6MB in the end (delta: 90.2MB). Free memory was 115.8MB in the beginning and 141.5MB in the end (delta: -25.7MB). Peak memory consumption was 135.8MB. Max. memory is 16.1GB. * Witness Printer took 60.73ms. Allocated memory is still 272.6MB. Free memory was 141.5MB in the beginning and 137.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 802]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 745]: 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, 112 locations, 6 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: 2.5s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 345 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 274 mSDsluCounter, 122 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 49 mSDsCounter, 89 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 804 IncrementalHoareTripleChecker+Invalid, 893 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 89 mSolverCounterUnsat, 73 mSDtfsCounter, 804 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=894occurred in iteration=6, InterpolantAutomatonStates: 31, 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, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 160 NumberOfCodeBlocks, 160 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 153 ConstructedInterpolants, 0 QuantifiedInterpolants, 223 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 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 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-01-27 15:06:45,501 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE