./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/popl20-bad-ring-nondet.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/popl20-bad-ring-nondet.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 01186d000498d57447d1d7ea86dd893215c56febea2169abeb96f12030a58ea4 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-a340643-m [2024-01-27 15:35:01,649 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-27 15:35:01,723 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-27 15:35:01,726 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-27 15:35:01,726 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-27 15:35:01,761 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-27 15:35:01,764 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-27 15:35:01,764 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-27 15:35:01,765 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-27 15:35:01,768 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-27 15:35:01,768 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-27 15:35:01,768 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-27 15:35:01,769 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-27 15:35:01,770 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-27 15:35:01,770 INFO L153 SettingsManager]: * Use SBE=true [2024-01-27 15:35:01,771 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-27 15:35:01,771 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-27 15:35:01,771 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-27 15:35:01,771 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-27 15:35:01,771 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-27 15:35:01,772 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-27 15:35:01,772 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-27 15:35:01,772 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-27 15:35:01,773 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-27 15:35:01,773 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-27 15:35:01,773 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-27 15:35:01,773 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-27 15:35:01,773 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-27 15:35:01,774 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-27 15:35:01,774 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-27 15:35:01,775 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-27 15:35:01,775 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-27 15:35:01,776 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 15:35:01,776 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-27 15:35:01,776 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-27 15:35:01,776 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-27 15:35:01,776 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-27 15:35:01,777 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-27 15:35:01,777 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-27 15:35:01,777 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-27 15:35:01,777 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-27 15:35:01,777 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-27 15:35:01,778 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-27 15:35:01,778 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 01186d000498d57447d1d7ea86dd893215c56febea2169abeb96f12030a58ea4 [2024-01-27 15:35:01,997 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-27 15:35:02,017 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-27 15:35:02,019 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-27 15:35:02,020 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-27 15:35:02,020 INFO L274 PluginConnector]: CDTParser initialized [2024-01-27 15:35:02,021 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-bad-ring-nondet.wvr.c [2024-01-27 15:35:03,040 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-27 15:35:03,200 INFO L384 CDTParser]: Found 1 translation units. [2024-01-27 15:35:03,200 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-ring-nondet.wvr.c [2024-01-27 15:35:03,207 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62706cec7/38edad8a38814c0eb0edc49d559849c9/FLAGb163ffb62 [2024-01-27 15:35:03,217 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62706cec7/38edad8a38814c0eb0edc49d559849c9 [2024-01-27 15:35:03,219 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-27 15:35:03,220 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-01-27 15:35:03,221 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-27 15:35:03,221 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-27 15:35:03,225 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-27 15:35:03,225 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 03:35:03" (1/1) ... [2024-01-27 15:35:03,226 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37288ee2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:35:03, skipping insertion in model container [2024-01-27 15:35:03,226 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 03:35:03" (1/1) ... [2024-01-27 15:35:03,250 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-27 15:35:03,377 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-ring-nondet.wvr.c[4124,4137] [2024-01-27 15:35:03,383 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 15:35:03,396 INFO L202 MainTranslator]: Completed pre-run [2024-01-27 15:35:03,418 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-ring-nondet.wvr.c[4124,4137] [2024-01-27 15:35:03,420 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 15:35:03,432 INFO L206 MainTranslator]: Completed translation [2024-01-27 15:35:03,432 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:35:03 WrapperNode [2024-01-27 15:35:03,433 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-27 15:35:03,433 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-27 15:35:03,434 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-27 15:35:03,434 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-27 15:35:03,439 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:35:03" (1/1) ... [2024-01-27 15:35:03,446 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:35:03" (1/1) ... [2024-01-27 15:35:03,469 INFO L138 Inliner]: procedures = 25, calls = 63, calls flagged for inlining = 16, calls inlined = 20, statements flattened = 333 [2024-01-27 15:35:03,469 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-27 15:35:03,470 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-27 15:35:03,470 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-27 15:35:03,470 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-27 15:35:03,479 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:35:03" (1/1) ... [2024-01-27 15:35:03,479 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:35:03" (1/1) ... [2024-01-27 15:35:03,485 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:35:03" (1/1) ... [2024-01-27 15:35:03,521 INFO L175 MemorySlicer]: Split 18 memory accesses to 5 slices as follows [2, 2, 2, 10, 2]. 56 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 6 writes are split as follows [0, 1, 1, 3, 1]. [2024-01-27 15:35:03,521 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:35:03" (1/1) ... [2024-01-27 15:35:03,521 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:35:03" (1/1) ... [2024-01-27 15:35:03,528 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:35:03" (1/1) ... [2024-01-27 15:35:03,532 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:35:03" (1/1) ... [2024-01-27 15:35:03,533 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:35:03" (1/1) ... [2024-01-27 15:35:03,535 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:35:03" (1/1) ... [2024-01-27 15:35:03,555 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-27 15:35:03,556 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-27 15:35:03,556 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-27 15:35:03,556 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-27 15:35:03,557 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:35:03" (1/1) ... [2024-01-27 15:35:03,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 15:35:03,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:35:03,584 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 15:35:03,592 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 15:35:03,621 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-27 15:35:03,621 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-27 15:35:03,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-27 15:35:03,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-27 15:35:03,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-27 15:35:03,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-27 15:35:03,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-01-27 15:35:03,622 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-27 15:35:03,622 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-27 15:35:03,622 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-27 15:35:03,623 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-01-27 15:35:03,623 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-01-27 15:35:03,623 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-01-27 15:35:03,623 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-01-27 15:35:03,623 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-01-27 15:35:03,623 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-01-27 15:35:03,623 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-01-27 15:35:03,624 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-01-27 15:35:03,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-27 15:35:03,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-27 15:35:03,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-27 15:35:03,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-27 15:35:03,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-01-27 15:35:03,624 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-01-27 15:35:03,625 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-01-27 15:35:03,625 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-01-27 15:35:03,625 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-27 15:35:03,625 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-27 15:35:03,625 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-27 15:35:03,627 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 15:35:03,718 INFO L244 CfgBuilder]: Building ICFG [2024-01-27 15:35:03,720 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-27 15:35:04,112 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-27 15:35:04,112 INFO L293 CfgBuilder]: Performing block encoding [2024-01-27 15:35:04,400 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-27 15:35:04,400 INFO L320 CfgBuilder]: Removed 6 assume(true) statements. [2024-01-27 15:35:04,401 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 03:35:04 BoogieIcfgContainer [2024-01-27 15:35:04,401 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-27 15:35:04,403 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-27 15:35:04,403 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-27 15:35:04,406 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-27 15:35:04,406 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 03:35:03" (1/3) ... [2024-01-27 15:35:04,407 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b121aff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 03:35:04, skipping insertion in model container [2024-01-27 15:35:04,407 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:35:03" (2/3) ... [2024-01-27 15:35:04,408 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b121aff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 03:35:04, skipping insertion in model container [2024-01-27 15:35:04,408 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 03:35:04" (3/3) ... [2024-01-27 15:35:04,409 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-ring-nondet.wvr.c [2024-01-27 15:35:04,417 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2024-01-27 15:35:04,425 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-27 15:35:04,425 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-01-27 15:35:04,425 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-27 15:35:04,491 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-01-27 15:35:04,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 56 places, 56 transitions, 133 flow [2024-01-27 15:35:04,588 INFO L124 PetriNetUnfolderBase]: 10/53 cut-off events. [2024-01-27 15:35:04,589 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-01-27 15:35:04,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66 conditions, 53 events. 10/53 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 110 event pairs, 0 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 41. Up to 3 conditions per place. [2024-01-27 15:35:04,593 INFO L82 GeneralOperation]: Start removeDead. Operand has 56 places, 56 transitions, 133 flow [2024-01-27 15:35:04,596 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 52 places, 52 transitions, 122 flow [2024-01-27 15:35:04,603 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-27 15:35:04,610 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;@54bd143f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-27 15:35:04,610 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-01-27 15:35:04,627 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-27 15:35:04,627 INFO L124 PetriNetUnfolderBase]: 10/51 cut-off events. [2024-01-27 15:35:04,627 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-01-27 15:35:04,627 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:35:04,628 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:35:04,628 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:35:04,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:35:04,633 INFO L85 PathProgramCache]: Analyzing trace with hash -1929499341, now seen corresponding path program 1 times [2024-01-27 15:35:04,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:35:04,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16203031] [2024-01-27 15:35:04,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:35:04,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:35:04,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:35:04,896 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 15:35:04,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:35:04,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16203031] [2024-01-27 15:35:04,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16203031] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:35:04,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:35:04,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-27 15:35:04,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135184446] [2024-01-27 15:35:04,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:35:04,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-01-27 15:35:04,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:35:04,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-01-27 15:35:04,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-01-27 15:35:04,936 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 56 [2024-01-27 15:35:04,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 52 transitions, 122 flow. Second operand has 2 states, 2 states have (on average 30.0) internal successors, (60), 2 states have internal predecessors, (60), 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 15:35:04,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:35:04,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 56 [2024-01-27 15:35:04,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:35:05,280 INFO L124 PetriNetUnfolderBase]: 1407/2400 cut-off events. [2024-01-27 15:35:05,281 INFO L125 PetriNetUnfolderBase]: For 108/108 co-relation queries the response was YES. [2024-01-27 15:35:05,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4387 conditions, 2400 events. 1407/2400 cut-off events. For 108/108 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 13743 event pairs, 1152 based on Foata normal form. 220/2263 useless extension candidates. Maximal degree in co-relation 4032. Up to 1842 conditions per place. [2024-01-27 15:35:05,302 INFO L140 encePairwiseOnDemand]: 54/56 looper letters, 36 selfloop transitions, 0 changer transitions 0/50 dead transitions. [2024-01-27 15:35:05,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 50 transitions, 190 flow [2024-01-27 15:35:05,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-01-27 15:35:05,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-01-27 15:35:05,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 72 transitions. [2024-01-27 15:35:05,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6428571428571429 [2024-01-27 15:35:05,314 INFO L175 Difference]: Start difference. First operand has 52 places, 52 transitions, 122 flow. Second operand 2 states and 72 transitions. [2024-01-27 15:35:05,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 50 transitions, 190 flow [2024-01-27 15:35:05,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 50 transitions, 178 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-01-27 15:35:05,326 INFO L231 Difference]: Finished difference. Result has 47 places, 50 transitions, 106 flow [2024-01-27 15:35:05,327 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=106, PETRI_PLACES=47, PETRI_TRANSITIONS=50} [2024-01-27 15:35:05,331 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, -5 predicate places. [2024-01-27 15:35:05,331 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 50 transitions, 106 flow [2024-01-27 15:35:05,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 30.0) internal successors, (60), 2 states have internal predecessors, (60), 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 15:35:05,332 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:35:05,332 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:35:05,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-27 15:35:05,333 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:35:05,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:35:05,334 INFO L85 PathProgramCache]: Analyzing trace with hash -220389253, now seen corresponding path program 1 times [2024-01-27 15:35:05,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:35:05,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984278243] [2024-01-27 15:35:05,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:35:05,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:35:05,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:35:05,543 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 15:35:05,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:35:05,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984278243] [2024-01-27 15:35:05,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984278243] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:35:05,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:35:05,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-27 15:35:05,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039167726] [2024-01-27 15:35:05,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:35:05,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 15:35:05,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:35:05,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 15:35:05,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 15:35:05,547 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 56 [2024-01-27 15:35:05,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 50 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:35:05,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:35:05,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 56 [2024-01-27 15:35:05,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:35:05,767 INFO L124 PetriNetUnfolderBase]: 1237/2196 cut-off events. [2024-01-27 15:35:05,767 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2024-01-27 15:35:05,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3980 conditions, 2196 events. 1237/2196 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 12760 event pairs, 409 based on Foata normal form. 33/1940 useless extension candidates. Maximal degree in co-relation 3977. Up to 1216 conditions per place. [2024-01-27 15:35:05,779 INFO L140 encePairwiseOnDemand]: 53/56 looper letters, 51 selfloop transitions, 2 changer transitions 0/67 dead transitions. [2024-01-27 15:35:05,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 67 transitions, 248 flow [2024-01-27 15:35:05,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 15:35:05,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 15:35:05,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 105 transitions. [2024-01-27 15:35:05,782 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.625 [2024-01-27 15:35:05,782 INFO L175 Difference]: Start difference. First operand has 47 places, 50 transitions, 106 flow. Second operand 3 states and 105 transitions. [2024-01-27 15:35:05,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 67 transitions, 248 flow [2024-01-27 15:35:05,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 67 transitions, 248 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-01-27 15:35:05,784 INFO L231 Difference]: Finished difference. Result has 50 places, 51 transitions, 118 flow [2024-01-27 15:35:05,785 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=118, PETRI_PLACES=50, PETRI_TRANSITIONS=51} [2024-01-27 15:35:05,785 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, -2 predicate places. [2024-01-27 15:35:05,785 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 51 transitions, 118 flow [2024-01-27 15:35:05,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:35:05,785 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:35:05,786 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:35:05,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-27 15:35:05,786 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:35:05,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:35:05,786 INFO L85 PathProgramCache]: Analyzing trace with hash -111246473, now seen corresponding path program 2 times [2024-01-27 15:35:05,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:35:05,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362246978] [2024-01-27 15:35:05,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:35:05,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:35:05,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:35:05,852 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 15:35:05,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:35:05,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362246978] [2024-01-27 15:35:05,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362246978] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:35:05,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:35:05,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-27 15:35:05,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029816944] [2024-01-27 15:35:05,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:35:05,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 15:35:05,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:35:05,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 15:35:05,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 15:35:05,855 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 56 [2024-01-27 15:35:05,855 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 51 transitions, 118 flow. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:35:05,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:35:05,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 56 [2024-01-27 15:35:05,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:35:06,197 INFO L124 PetriNetUnfolderBase]: 2262/3874 cut-off events. [2024-01-27 15:35:06,198 INFO L125 PetriNetUnfolderBase]: For 340/340 co-relation queries the response was YES. [2024-01-27 15:35:06,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7656 conditions, 3874 events. 2262/3874 cut-off events. For 340/340 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 24269 event pairs, 978 based on Foata normal form. 1/3420 useless extension candidates. Maximal degree in co-relation 7651. Up to 1660 conditions per place. [2024-01-27 15:35:06,212 INFO L140 encePairwiseOnDemand]: 53/56 looper letters, 55 selfloop transitions, 2 changer transitions 7/78 dead transitions. [2024-01-27 15:35:06,213 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 78 transitions, 312 flow [2024-01-27 15:35:06,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 15:35:06,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 15:35:06,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 114 transitions. [2024-01-27 15:35:06,217 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6785714285714286 [2024-01-27 15:35:06,217 INFO L175 Difference]: Start difference. First operand has 50 places, 51 transitions, 118 flow. Second operand 3 states and 114 transitions. [2024-01-27 15:35:06,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 78 transitions, 312 flow [2024-01-27 15:35:06,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 78 transitions, 309 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-27 15:35:06,219 INFO L231 Difference]: Finished difference. Result has 52 places, 52 transitions, 128 flow [2024-01-27 15:35:06,220 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=128, PETRI_PLACES=52, PETRI_TRANSITIONS=52} [2024-01-27 15:35:06,221 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 0 predicate places. [2024-01-27 15:35:06,221 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 52 transitions, 128 flow [2024-01-27 15:35:06,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:35:06,221 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:35:06,222 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:35:06,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-27 15:35:06,222 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:35:06,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:35:06,223 INFO L85 PathProgramCache]: Analyzing trace with hash 622500851, now seen corresponding path program 1 times [2024-01-27 15:35:06,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:35:06,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428558357] [2024-01-27 15:35:06,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:35:06,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:35:06,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:35:06,331 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 15:35:06,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:35:06,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428558357] [2024-01-27 15:35:06,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428558357] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:35:06,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:35:06,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-27 15:35:06,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409853835] [2024-01-27 15:35:06,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:35:06,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 15:35:06,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:35:06,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 15:35:06,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 15:35:06,341 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 56 [2024-01-27 15:35:06,341 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 52 transitions, 128 flow. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:35:06,341 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:35:06,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 56 [2024-01-27 15:35:06,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:35:06,713 INFO L124 PetriNetUnfolderBase]: 2346/4096 cut-off events. [2024-01-27 15:35:06,713 INFO L125 PetriNetUnfolderBase]: For 332/332 co-relation queries the response was YES. [2024-01-27 15:35:06,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8094 conditions, 4096 events. 2346/4096 cut-off events. For 332/332 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 25282 event pairs, 899 based on Foata normal form. 55/3573 useless extension candidates. Maximal degree in co-relation 8088. Up to 2886 conditions per place. [2024-01-27 15:35:06,733 INFO L140 encePairwiseOnDemand]: 52/56 looper letters, 50 selfloop transitions, 3 changer transitions 0/67 dead transitions. [2024-01-27 15:35:06,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 67 transitions, 271 flow [2024-01-27 15:35:06,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 15:35:06,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 15:35:06,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 102 transitions. [2024-01-27 15:35:06,736 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6071428571428571 [2024-01-27 15:35:06,736 INFO L175 Difference]: Start difference. First operand has 52 places, 52 transitions, 128 flow. Second operand 3 states and 102 transitions. [2024-01-27 15:35:06,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 67 transitions, 271 flow [2024-01-27 15:35:06,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 67 transitions, 268 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-27 15:35:06,738 INFO L231 Difference]: Finished difference. Result has 54 places, 54 transitions, 145 flow [2024-01-27 15:35:06,738 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=145, PETRI_PLACES=54, PETRI_TRANSITIONS=54} [2024-01-27 15:35:06,740 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 2 predicate places. [2024-01-27 15:35:06,740 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 54 transitions, 145 flow [2024-01-27 15:35:06,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:35:06,740 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:35:06,740 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:35:06,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-27 15:35:06,741 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:35:06,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:35:06,741 INFO L85 PathProgramCache]: Analyzing trace with hash 850031335, now seen corresponding path program 2 times [2024-01-27 15:35:06,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:35:06,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527070070] [2024-01-27 15:35:06,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:35:06,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:35:06,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:35:06,799 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 15:35:06,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:35:06,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527070070] [2024-01-27 15:35:06,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527070070] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:35:06,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:35:06,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-27 15:35:06,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673448347] [2024-01-27 15:35:06,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:35:06,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 15:35:06,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:35:06,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 15:35:06,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 15:35:06,802 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 56 [2024-01-27 15:35:06,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 54 transitions, 145 flow. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:35:06,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:35:06,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 56 [2024-01-27 15:35:06,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:35:07,134 INFO L124 PetriNetUnfolderBase]: 2503/4533 cut-off events. [2024-01-27 15:35:07,134 INFO L125 PetriNetUnfolderBase]: For 892/914 co-relation queries the response was YES. [2024-01-27 15:35:07,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9294 conditions, 4533 events. 2503/4533 cut-off events. For 892/914 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 29429 event pairs, 973 based on Foata normal form. 0/3959 useless extension candidates. Maximal degree in co-relation 9287. Up to 1806 conditions per place. [2024-01-27 15:35:07,159 INFO L140 encePairwiseOnDemand]: 53/56 looper letters, 51 selfloop transitions, 3 changer transitions 1/69 dead transitions. [2024-01-27 15:35:07,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 69 transitions, 295 flow [2024-01-27 15:35:07,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 15:35:07,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 15:35:07,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 102 transitions. [2024-01-27 15:35:07,163 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6071428571428571 [2024-01-27 15:35:07,163 INFO L175 Difference]: Start difference. First operand has 54 places, 54 transitions, 145 flow. Second operand 3 states and 102 transitions. [2024-01-27 15:35:07,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 69 transitions, 295 flow [2024-01-27 15:35:07,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 69 transitions, 292 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-27 15:35:07,166 INFO L231 Difference]: Finished difference. Result has 57 places, 54 transitions, 156 flow [2024-01-27 15:35:07,170 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=156, PETRI_PLACES=57, PETRI_TRANSITIONS=54} [2024-01-27 15:35:07,171 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 5 predicate places. [2024-01-27 15:35:07,172 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 54 transitions, 156 flow [2024-01-27 15:35:07,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:35:07,172 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:35:07,172 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:35:07,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-27 15:35:07,173 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:35:07,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:35:07,174 INFO L85 PathProgramCache]: Analyzing trace with hash -386460206, now seen corresponding path program 1 times [2024-01-27 15:35:07,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:35:07,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704384523] [2024-01-27 15:35:07,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:35:07,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:35:07,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:35:07,280 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:35:07,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:35:07,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704384523] [2024-01-27 15:35:07,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704384523] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 15:35:07,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1390820523] [2024-01-27 15:35:07,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:35:07,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:35:07,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:35:07,283 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 15:35:07,307 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 15:35:07,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:35:07,436 INFO L262 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 5 conjunts are in the unsatisfiable core [2024-01-27 15:35:07,442 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:35:07,488 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-01-27 15:35:07,488 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-27 15:35:07,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1390820523] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:35:07,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-01-27 15:35:07,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-01-27 15:35:07,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110498867] [2024-01-27 15:35:07,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:35:07,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 15:35:07,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:35:07,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 15:35:07,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-01-27 15:35:07,490 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 56 [2024-01-27 15:35:07,490 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 54 transitions, 156 flow. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 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 15:35:07,491 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:35:07,491 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 56 [2024-01-27 15:35:07,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:35:07,887 INFO L124 PetriNetUnfolderBase]: 2528/4456 cut-off events. [2024-01-27 15:35:07,887 INFO L125 PetriNetUnfolderBase]: For 2048/2048 co-relation queries the response was YES. [2024-01-27 15:35:07,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10069 conditions, 4456 events. 2528/4456 cut-off events. For 2048/2048 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 27700 event pairs, 1951 based on Foata normal form. 14/4006 useless extension candidates. Maximal degree in co-relation 10061. Up to 3451 conditions per place. [2024-01-27 15:35:07,907 INFO L140 encePairwiseOnDemand]: 48/56 looper letters, 39 selfloop transitions, 2 changer transitions 19/74 dead transitions. [2024-01-27 15:35:07,907 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 74 transitions, 321 flow [2024-01-27 15:35:07,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 15:35:07,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 15:35:07,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 142 transitions. [2024-01-27 15:35:07,909 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5071428571428571 [2024-01-27 15:35:07,909 INFO L175 Difference]: Start difference. First operand has 57 places, 54 transitions, 156 flow. Second operand 5 states and 142 transitions. [2024-01-27 15:35:07,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 74 transitions, 321 flow [2024-01-27 15:35:07,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 74 transitions, 315 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-27 15:35:07,912 INFO L231 Difference]: Finished difference. Result has 62 places, 55 transitions, 172 flow [2024-01-27 15:35:07,912 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=172, PETRI_PLACES=62, PETRI_TRANSITIONS=55} [2024-01-27 15:35:07,914 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 10 predicate places. [2024-01-27 15:35:07,914 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 55 transitions, 172 flow [2024-01-27 15:35:07,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 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 15:35:07,915 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:35:07,915 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:35:07,928 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 15:35:08,127 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 15:35:08,128 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:35:08,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:35:08,129 INFO L85 PathProgramCache]: Analyzing trace with hash 1906530868, now seen corresponding path program 1 times [2024-01-27 15:35:08,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:35:08,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898262509] [2024-01-27 15:35:08,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:35:08,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:35:08,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:35:08,211 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-27 15:35:08,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:35:08,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898262509] [2024-01-27 15:35:08,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898262509] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 15:35:08,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [646047080] [2024-01-27 15:35:08,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:35:08,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:35:08,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:35:08,214 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-27 15:35:08,238 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-01-27 15:35:08,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:35:08,340 INFO L262 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 5 conjunts are in the unsatisfiable core [2024-01-27 15:35:08,342 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:35:08,384 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-01-27 15:35:08,384 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-27 15:35:08,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [646047080] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:35:08,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-01-27 15:35:08,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2024-01-27 15:35:08,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173036070] [2024-01-27 15:35:08,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:35:08,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 15:35:08,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:35:08,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 15:35:08,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-01-27 15:35:08,389 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 56 [2024-01-27 15:35:08,389 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 55 transitions, 172 flow. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 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 15:35:08,389 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:35:08,389 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 56 [2024-01-27 15:35:08,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:35:08,808 INFO L124 PetriNetUnfolderBase]: 3331/5916 cut-off events. [2024-01-27 15:35:08,808 INFO L125 PetriNetUnfolderBase]: For 2268/2268 co-relation queries the response was YES. [2024-01-27 15:35:08,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13291 conditions, 5916 events. 3331/5916 cut-off events. For 2268/2268 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 39281 event pairs, 2594 based on Foata normal form. 107/5402 useless extension candidates. Maximal degree in co-relation 13280. Up to 3452 conditions per place. [2024-01-27 15:35:08,830 INFO L140 encePairwiseOnDemand]: 51/56 looper letters, 40 selfloop transitions, 2 changer transitions 28/84 dead transitions. [2024-01-27 15:35:08,830 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 84 transitions, 405 flow [2024-01-27 15:35:08,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-27 15:35:08,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-27 15:35:08,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 132 transitions. [2024-01-27 15:35:08,831 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5892857142857143 [2024-01-27 15:35:08,831 INFO L175 Difference]: Start difference. First operand has 62 places, 55 transitions, 172 flow. Second operand 4 states and 132 transitions. [2024-01-27 15:35:08,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 84 transitions, 405 flow [2024-01-27 15:35:08,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 84 transitions, 385 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-01-27 15:35:08,836 INFO L231 Difference]: Finished difference. Result has 62 places, 56 transitions, 174 flow [2024-01-27 15:35:08,836 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=174, PETRI_PLACES=62, PETRI_TRANSITIONS=56} [2024-01-27 15:35:08,837 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 10 predicate places. [2024-01-27 15:35:08,837 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 56 transitions, 174 flow [2024-01-27 15:35:08,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 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 15:35:08,840 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:35:08,840 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:35:08,855 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-01-27 15:35:09,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-01-27 15:35:09,052 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:35:09,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:35:09,053 INFO L85 PathProgramCache]: Analyzing trace with hash -361329528, now seen corresponding path program 1 times [2024-01-27 15:35:09,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:35:09,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891168986] [2024-01-27 15:35:09,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:35:09,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:35:09,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:35:09,127 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:35:09,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:35:09,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891168986] [2024-01-27 15:35:09,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891168986] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 15:35:09,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [500737500] [2024-01-27 15:35:09,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:35:09,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:35:09,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:35:09,129 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-27 15:35:09,132 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-01-27 15:35:09,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:35:09,261 INFO L262 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 5 conjunts are in the unsatisfiable core [2024-01-27 15:35:09,264 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:35:09,328 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-01-27 15:35:09,329 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-27 15:35:09,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [500737500] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:35:09,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-01-27 15:35:09,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2024-01-27 15:35:09,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355128045] [2024-01-27 15:35:09,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:35:09,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 15:35:09,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:35:09,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 15:35:09,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-01-27 15:35:09,330 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 56 [2024-01-27 15:35:09,330 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 56 transitions, 174 flow. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 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 15:35:09,330 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:35:09,330 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 56 [2024-01-27 15:35:09,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:35:09,804 INFO L124 PetriNetUnfolderBase]: 3305/5855 cut-off events. [2024-01-27 15:35:09,804 INFO L125 PetriNetUnfolderBase]: For 1862/1862 co-relation queries the response was YES. [2024-01-27 15:35:09,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13196 conditions, 5855 events. 3305/5855 cut-off events. For 1862/1862 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 38541 event pairs, 2607 based on Foata normal form. 98/5196 useless extension candidates. Maximal degree in co-relation 13185. Up to 3453 conditions per place. [2024-01-27 15:35:09,829 INFO L140 encePairwiseOnDemand]: 51/56 looper letters, 41 selfloop transitions, 2 changer transitions 27/84 dead transitions. [2024-01-27 15:35:09,830 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 84 transitions, 408 flow [2024-01-27 15:35:09,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 15:35:09,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 15:35:09,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 147 transitions. [2024-01-27 15:35:09,830 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.525 [2024-01-27 15:35:09,831 INFO L175 Difference]: Start difference. First operand has 62 places, 56 transitions, 174 flow. Second operand 5 states and 147 transitions. [2024-01-27 15:35:09,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 84 transitions, 408 flow [2024-01-27 15:35:09,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 84 transitions, 400 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-01-27 15:35:09,834 INFO L231 Difference]: Finished difference. Result has 67 places, 57 transitions, 186 flow [2024-01-27 15:35:09,834 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=186, PETRI_PLACES=67, PETRI_TRANSITIONS=57} [2024-01-27 15:35:09,834 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 15 predicate places. [2024-01-27 15:35:09,834 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 57 transitions, 186 flow [2024-01-27 15:35:09,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 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 15:35:09,834 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:35:09,835 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:35:09,849 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-01-27 15:35:10,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:35:10,038 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:35:10,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:35:10,038 INFO L85 PathProgramCache]: Analyzing trace with hash 1024653584, now seen corresponding path program 1 times [2024-01-27 15:35:10,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:35:10,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578215209] [2024-01-27 15:35:10,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:35:10,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:35:10,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:35:10,102 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-01-27 15:35:10,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:35:10,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578215209] [2024-01-27 15:35:10,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578215209] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 15:35:10,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [576561352] [2024-01-27 15:35:10,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:35:10,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:35:10,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:35:10,103 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-27 15:35:10,138 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-01-27 15:35:10,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:35:10,241 INFO L262 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 7 conjunts are in the unsatisfiable core [2024-01-27 15:35:10,243 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:35:10,283 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 8 [2024-01-27 15:35:10,285 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-01-27 15:35:10,286 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-27 15:35:10,306 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-01-27 15:35:10,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [576561352] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-27 15:35:10,307 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-27 15:35:10,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2024-01-27 15:35:10,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244843839] [2024-01-27 15:35:10,307 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-27 15:35:10,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-27 15:35:10,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:35:10,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-27 15:35:10,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-01-27 15:35:10,308 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 56 [2024-01-27 15:35:10,308 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 57 transitions, 186 flow. Second operand has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 6 states have internal predecessors, (137), 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 15:35:10,308 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:35:10,308 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 56 [2024-01-27 15:35:10,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:35:10,664 INFO L124 PetriNetUnfolderBase]: 2262/4056 cut-off events. [2024-01-27 15:35:10,665 INFO L125 PetriNetUnfolderBase]: For 1407/1407 co-relation queries the response was YES. [2024-01-27 15:35:10,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8889 conditions, 4056 events. 2262/4056 cut-off events. For 1407/1407 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 25589 event pairs, 757 based on Foata normal form. 0/3665 useless extension candidates. Maximal degree in co-relation 8875. Up to 1365 conditions per place. [2024-01-27 15:35:10,675 INFO L140 encePairwiseOnDemand]: 53/56 looper letters, 0 selfloop transitions, 0 changer transitions 99/99 dead transitions. [2024-01-27 15:35:10,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 99 transitions, 484 flow [2024-01-27 15:35:10,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 15:35:10,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 15:35:10,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 159 transitions. [2024-01-27 15:35:10,676 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5678571428571428 [2024-01-27 15:35:10,676 INFO L175 Difference]: Start difference. First operand has 67 places, 57 transitions, 186 flow. Second operand 5 states and 159 transitions. [2024-01-27 15:35:10,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 99 transitions, 484 flow [2024-01-27 15:35:10,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 99 transitions, 470 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-01-27 15:35:10,678 INFO L231 Difference]: Finished difference. Result has 64 places, 0 transitions, 0 flow [2024-01-27 15:35:10,678 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=64, PETRI_TRANSITIONS=0} [2024-01-27 15:35:10,678 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 12 predicate places. [2024-01-27 15:35:10,678 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 0 transitions, 0 flow [2024-01-27 15:35:10,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 6 states have internal predecessors, (137), 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 15:35:10,680 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2024-01-27 15:35:10,681 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2024-01-27 15:35:10,681 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-01-27 15:35:10,681 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-01-27 15:35:10,695 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-01-27 15:35:10,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:35:10,893 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1] [2024-01-27 15:35:10,895 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-01-27 15:35:10,895 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-01-27 15:35:10,899 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.01 03:35:10 BasicIcfg [2024-01-27 15:35:10,899 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-01-27 15:35:10,899 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-01-27 15:35:10,899 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-01-27 15:35:10,899 INFO L274 PluginConnector]: Witness Printer initialized [2024-01-27 15:35:10,900 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 03:35:04" (3/4) ... [2024-01-27 15:35:10,901 INFO L137 WitnessPrinter]: Generating witness for correct program [2024-01-27 15:35:10,904 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-01-27 15:35:10,904 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-01-27 15:35:10,904 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2024-01-27 15:35:10,918 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 194 nodes and edges [2024-01-27 15:35:10,919 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 34 nodes and edges [2024-01-27 15:35:10,919 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2024-01-27 15:35:10,919 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-01-27 15:35:10,997 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-01-27 15:35:10,997 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-01-27 15:35:10,997 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-01-27 15:35:10,997 INFO L158 Benchmark]: Toolchain (without parser) took 7777.13ms. Allocated memory was 155.2MB in the beginning and 622.9MB in the end (delta: 467.7MB). Free memory was 103.0MB in the beginning and 318.3MB in the end (delta: -215.3MB). Peak memory consumption was 254.0MB. Max. memory is 16.1GB. [2024-01-27 15:35:10,999 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 155.2MB. Free memory was 121.6MB in the beginning and 121.5MB in the end (delta: 84.4kB). There was no memory consumed. Max. memory is 16.1GB. [2024-01-27 15:35:10,999 INFO L158 Benchmark]: CACSL2BoogieTranslator took 211.53ms. Allocated memory is still 155.2MB. Free memory was 102.6MB in the beginning and 89.7MB in the end (delta: 12.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-01-27 15:35:10,999 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.10ms. Allocated memory is still 155.2MB. Free memory was 89.7MB in the beginning and 86.9MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-27 15:35:10,999 INFO L158 Benchmark]: Boogie Preprocessor took 85.18ms. Allocated memory is still 155.2MB. Free memory was 86.9MB in the beginning and 83.5MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-01-27 15:35:11,000 INFO L158 Benchmark]: RCFGBuilder took 845.43ms. Allocated memory is still 155.2MB. Free memory was 83.5MB in the beginning and 65.1MB in the end (delta: 18.5MB). Peak memory consumption was 47.7MB. Max. memory is 16.1GB. [2024-01-27 15:35:11,000 INFO L158 Benchmark]: TraceAbstraction took 6495.70ms. Allocated memory was 155.2MB in the beginning and 622.9MB in the end (delta: 467.7MB). Free memory was 64.4MB in the beginning and 325.1MB in the end (delta: -260.7MB). Peak memory consumption was 208.4MB. Max. memory is 16.1GB. [2024-01-27 15:35:11,000 INFO L158 Benchmark]: Witness Printer took 97.69ms. Allocated memory is still 622.9MB. Free memory was 325.1MB in the beginning and 318.3MB in the end (delta: 6.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-01-27 15:35:11,002 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 155.2MB. Free memory was 121.6MB in the beginning and 121.5MB in the end (delta: 84.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 211.53ms. Allocated memory is still 155.2MB. Free memory was 102.6MB in the beginning and 89.7MB in the end (delta: 12.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.10ms. Allocated memory is still 155.2MB. Free memory was 89.7MB in the beginning and 86.9MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 85.18ms. Allocated memory is still 155.2MB. Free memory was 86.9MB in the beginning and 83.5MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 845.43ms. Allocated memory is still 155.2MB. Free memory was 83.5MB in the beginning and 65.1MB in the end (delta: 18.5MB). Peak memory consumption was 47.7MB. Max. memory is 16.1GB. * TraceAbstraction took 6495.70ms. Allocated memory was 155.2MB in the beginning and 622.9MB in the end (delta: 467.7MB). Free memory was 64.4MB in the beginning and 325.1MB in the end (delta: -260.7MB). Peak memory consumption was 208.4MB. Max. memory is 16.1GB. * Witness Printer took 97.69ms. Allocated memory is still 622.9MB. Free memory was 325.1MB in the beginning and 318.3MB in the end (delta: 6.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 156]: 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 7 procedures, 78 locations, 4 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: 6.4s, OverallIterations: 9, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 3.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 122 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 120 mSDsluCounter, 2 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 899 IncrementalHoareTripleChecker+Invalid, 909 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 2 mSDtfsCounter, 899 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 282 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=186occurred in iteration=8, InterpolantAutomatonStates: 33, 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: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 577 NumberOfCodeBlocks, 577 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 614 ConstructedInterpolants, 0 QuantifiedInterpolants, 1339 SizeOfPredicates, 9 NumberOfNonLiveVariables, 1446 ConjunctsInSsa, 22 ConjunctsInUnsatCore, 14 InterpolantComputations, 8 PerfectInterpolantSequences, 74/80 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 15:35:11,033 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