./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/unroll-4.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/unroll-4.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 bb07434636f33664cc09ed992a41516efeea5f96121c916fb8904844e76d9fcd --- Real Ultimate output --- This is Ultimate 0.2.4-dev-a340643-m [2024-01-27 15:57:10,561 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-27 15:57:10,628 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-27 15:57:10,633 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-27 15:57:10,633 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-27 15:57:10,659 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-27 15:57:10,659 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-27 15:57:10,659 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-27 15:57:10,660 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-27 15:57:10,664 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-27 15:57:10,665 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-27 15:57:10,665 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-27 15:57:10,665 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-27 15:57:10,666 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-27 15:57:10,666 INFO L153 SettingsManager]: * Use SBE=true [2024-01-27 15:57:10,667 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-27 15:57:10,667 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-27 15:57:10,667 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-27 15:57:10,667 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-27 15:57:10,668 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-27 15:57:10,668 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-27 15:57:10,668 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-27 15:57:10,669 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-27 15:57:10,669 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-27 15:57:10,669 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-27 15:57:10,669 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-27 15:57:10,669 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-27 15:57:10,670 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-27 15:57:10,670 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-27 15:57:10,670 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-27 15:57:10,671 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-27 15:57:10,671 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-27 15:57:10,672 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 15:57:10,672 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-27 15:57:10,672 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-27 15:57:10,672 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-27 15:57:10,672 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-27 15:57:10,673 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-27 15:57:10,673 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-27 15:57:10,673 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-27 15:57:10,673 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-27 15:57:10,674 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-27 15:57:10,674 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-27 15:57:10,674 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bb07434636f33664cc09ed992a41516efeea5f96121c916fb8904844e76d9fcd [2024-01-27 15:57:10,903 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-27 15:57:10,932 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-27 15:57:10,935 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-27 15:57:10,937 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-27 15:57:10,937 INFO L274 PluginConnector]: CDTParser initialized [2024-01-27 15:57:10,939 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/unroll-4.wvr.c [2024-01-27 15:57:12,079 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-27 15:57:12,303 INFO L384 CDTParser]: Found 1 translation units. [2024-01-27 15:57:12,305 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/unroll-4.wvr.c [2024-01-27 15:57:12,315 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2359b04b6/270bfa20a95a49e89ffa145805c07270/FLAG1c3222ab9 [2024-01-27 15:57:12,327 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2359b04b6/270bfa20a95a49e89ffa145805c07270 [2024-01-27 15:57:12,329 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-27 15:57:12,330 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-01-27 15:57:12,331 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-27 15:57:12,331 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-27 15:57:12,335 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-27 15:57:12,335 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 03:57:12" (1/1) ... [2024-01-27 15:57:12,336 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12d3b5a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:57:12, skipping insertion in model container [2024-01-27 15:57:12,336 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 03:57:12" (1/1) ... [2024-01-27 15:57:12,357 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-27 15:57:12,483 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/unroll-4.wvr.c[2598,2611] [2024-01-27 15:57:12,489 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 15:57:12,496 INFO L202 MainTranslator]: Completed pre-run [2024-01-27 15:57:12,515 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/unroll-4.wvr.c[2598,2611] [2024-01-27 15:57:12,517 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 15:57:12,533 INFO L206 MainTranslator]: Completed translation [2024-01-27 15:57:12,534 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:57:12 WrapperNode [2024-01-27 15:57:12,534 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-27 15:57:12,534 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-27 15:57:12,535 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-27 15:57:12,535 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-27 15:57:12,539 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:57:12" (1/1) ... [2024-01-27 15:57:12,547 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:57:12" (1/1) ... [2024-01-27 15:57:12,564 INFO L138 Inliner]: procedures = 24, calls = 36, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 159 [2024-01-27 15:57:12,566 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-27 15:57:12,566 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-27 15:57:12,566 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-27 15:57:12,566 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-27 15:57:12,585 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:57:12" (1/1) ... [2024-01-27 15:57:12,600 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:57:12" (1/1) ... [2024-01-27 15:57:12,602 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:57:12" (1/1) ... [2024-01-27 15:57:12,619 INFO L175 MemorySlicer]: Split 12 memory accesses to 4 slices as follows [2, 2, 6, 2]. 50 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 3 writes are split as follows [0, 1, 1, 1]. [2024-01-27 15:57:12,619 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:57:12" (1/1) ... [2024-01-27 15:57:12,620 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:57:12" (1/1) ... [2024-01-27 15:57:12,624 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:57:12" (1/1) ... [2024-01-27 15:57:12,627 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:57:12" (1/1) ... [2024-01-27 15:57:12,628 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:57:12" (1/1) ... [2024-01-27 15:57:12,629 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:57:12" (1/1) ... [2024-01-27 15:57:12,630 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-27 15:57:12,631 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-27 15:57:12,631 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-27 15:57:12,631 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-27 15:57:12,632 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:57:12" (1/1) ... [2024-01-27 15:57:12,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 15:57:12,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:57:12,661 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 15:57:12,677 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 15:57:12,694 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-27 15:57:12,695 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-01-27 15:57:12,695 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-01-27 15:57:12,695 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-01-27 15:57:12,695 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-01-27 15:57:12,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-27 15:57:12,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-27 15:57:12,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-27 15:57:12,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-27 15:57:12,696 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-27 15:57:12,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-27 15:57:12,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-27 15:57:12,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-27 15:57:12,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-27 15:57:12,696 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-01-27 15:57:12,696 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-27 15:57:12,697 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-27 15:57:12,697 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-27 15:57:12,697 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-27 15:57:12,697 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-27 15:57:12,697 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-01-27 15:57:12,697 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-27 15:57:12,699 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 15:57:12,777 INFO L244 CfgBuilder]: Building ICFG [2024-01-27 15:57:12,778 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-27 15:57:13,007 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-27 15:57:13,008 INFO L293 CfgBuilder]: Performing block encoding [2024-01-27 15:57:13,196 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-27 15:57:13,197 INFO L320 CfgBuilder]: Removed 3 assume(true) statements. [2024-01-27 15:57:13,197 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 03:57:13 BoogieIcfgContainer [2024-01-27 15:57:13,197 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-27 15:57:13,199 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-27 15:57:13,199 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-27 15:57:13,201 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-27 15:57:13,201 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 03:57:12" (1/3) ... [2024-01-27 15:57:13,202 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4acde1bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 03:57:13, skipping insertion in model container [2024-01-27 15:57:13,202 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:57:12" (2/3) ... [2024-01-27 15:57:13,202 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4acde1bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 03:57:13, skipping insertion in model container [2024-01-27 15:57:13,202 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 03:57:13" (3/3) ... [2024-01-27 15:57:13,203 INFO L112 eAbstractionObserver]: Analyzing ICFG unroll-4.wvr.c [2024-01-27 15:57:13,209 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2024-01-27 15:57:13,215 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-27 15:57:13,216 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-01-27 15:57:13,216 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-27 15:57:13,258 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-01-27 15:57:13,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 25 places, 21 transitions, 56 flow [2024-01-27 15:57:13,325 INFO L124 PetriNetUnfolderBase]: 3/19 cut-off events. [2024-01-27 15:57:13,325 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-01-27 15:57:13,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28 conditions, 19 events. 3/19 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 10 event pairs, 0 based on Foata normal form. 0/15 useless extension candidates. Maximal degree in co-relation 11. Up to 2 conditions per place. [2024-01-27 15:57:13,327 INFO L82 GeneralOperation]: Start removeDead. Operand has 25 places, 21 transitions, 56 flow [2024-01-27 15:57:13,331 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 22 places, 18 transitions, 48 flow [2024-01-27 15:57:13,344 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-27 15:57:13,351 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;@57f6319c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-27 15:57:13,351 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-01-27 15:57:13,362 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-27 15:57:13,363 INFO L124 PetriNetUnfolderBase]: 3/17 cut-off events. [2024-01-27 15:57:13,363 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-01-27 15:57:13,363 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:57:13,364 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:57:13,364 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:57:13,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:57:13,369 INFO L85 PathProgramCache]: Analyzing trace with hash 241863047, now seen corresponding path program 1 times [2024-01-27 15:57:13,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:57:13,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298839496] [2024-01-27 15:57:13,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:57:13,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:57:13,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:57:13,666 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 15:57:13,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:57:13,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298839496] [2024-01-27 15:57:13,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298839496] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:57:13,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:57:13,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-27 15:57:13,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284017633] [2024-01-27 15:57:13,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:57:13,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 15:57:13,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:57:13,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 15:57:13,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 15:57:13,760 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2024-01-27 15:57:13,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 18 transitions, 48 flow. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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 15:57:13,770 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:57:13,770 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2024-01-27 15:57:13,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:57:13,873 INFO L124 PetriNetUnfolderBase]: 75/137 cut-off events. [2024-01-27 15:57:13,873 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2024-01-27 15:57:13,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 297 conditions, 137 events. 75/137 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 353 event pairs, 24 based on Foata normal form. 1/105 useless extension candidates. Maximal degree in co-relation 220. Up to 79 conditions per place. [2024-01-27 15:57:13,878 INFO L140 encePairwiseOnDemand]: 17/21 looper letters, 25 selfloop transitions, 3 changer transitions 1/30 dead transitions. [2024-01-27 15:57:13,879 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 30 transitions, 139 flow [2024-01-27 15:57:13,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 15:57:13,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 15:57:13,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 39 transitions. [2024-01-27 15:57:13,891 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6190476190476191 [2024-01-27 15:57:13,892 INFO L175 Difference]: Start difference. First operand has 22 places, 18 transitions, 48 flow. Second operand 3 states and 39 transitions. [2024-01-27 15:57:13,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 30 transitions, 139 flow [2024-01-27 15:57:13,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 30 transitions, 125 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-01-27 15:57:13,899 INFO L231 Difference]: Finished difference. Result has 21 places, 20 transitions, 59 flow [2024-01-27 15:57:13,900 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=59, PETRI_PLACES=21, PETRI_TRANSITIONS=20} [2024-01-27 15:57:13,903 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, -1 predicate places. [2024-01-27 15:57:13,907 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 20 transitions, 59 flow [2024-01-27 15:57:13,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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 15:57:13,907 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:57:13,907 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:57:13,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-27 15:57:13,908 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:57:13,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:57:13,909 INFO L85 PathProgramCache]: Analyzing trace with hash 1615350276, now seen corresponding path program 1 times [2024-01-27 15:57:13,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:57:13,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894152679] [2024-01-27 15:57:13,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:57:13,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:57:13,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:57:14,063 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-27 15:57:14,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:57:14,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894152679] [2024-01-27 15:57:14,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894152679] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:57:14,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:57:14,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-27 15:57:14,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516398561] [2024-01-27 15:57:14,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:57:14,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 15:57:14,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:57:14,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 15:57:14,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 15:57:14,066 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2024-01-27 15:57:14,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 20 transitions, 59 flow. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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 15:57:14,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:57:14,067 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2024-01-27 15:57:14,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:57:14,107 INFO L124 PetriNetUnfolderBase]: 75/138 cut-off events. [2024-01-27 15:57:14,108 INFO L125 PetriNetUnfolderBase]: For 22/22 co-relation queries the response was YES. [2024-01-27 15:57:14,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 335 conditions, 138 events. 75/138 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 338 event pairs, 48 based on Foata normal form. 0/137 useless extension candidates. Maximal degree in co-relation 120. Up to 137 conditions per place. [2024-01-27 15:57:14,109 INFO L140 encePairwiseOnDemand]: 18/21 looper letters, 18 selfloop transitions, 2 changer transitions 0/21 dead transitions. [2024-01-27 15:57:14,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 21 transitions, 101 flow [2024-01-27 15:57:14,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 15:57:14,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 15:57:14,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 28 transitions. [2024-01-27 15:57:14,112 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-01-27 15:57:14,112 INFO L175 Difference]: Start difference. First operand has 21 places, 20 transitions, 59 flow. Second operand 3 states and 28 transitions. [2024-01-27 15:57:14,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 21 transitions, 101 flow [2024-01-27 15:57:14,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 21 transitions, 98 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-27 15:57:14,113 INFO L231 Difference]: Finished difference. Result has 23 places, 21 transitions, 68 flow [2024-01-27 15:57:14,114 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=68, PETRI_PLACES=23, PETRI_TRANSITIONS=21} [2024-01-27 15:57:14,114 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 1 predicate places. [2024-01-27 15:57:14,115 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 21 transitions, 68 flow [2024-01-27 15:57:14,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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 15:57:14,116 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:57:14,118 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:57:14,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-27 15:57:14,119 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:57:14,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:57:14,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1075635653, now seen corresponding path program 1 times [2024-01-27 15:57:14,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:57:14,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738673941] [2024-01-27 15:57:14,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:57:14,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:57:14,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:57:14,286 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-27 15:57:14,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:57:14,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738673941] [2024-01-27 15:57:14,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738673941] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 15:57:14,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [101935488] [2024-01-27 15:57:14,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:57:14,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:57:14,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:57:14,289 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 15:57:14,313 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 15:57:14,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:57:14,394 INFO L262 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 6 conjunts are in the unsatisfiable core [2024-01-27 15:57:14,398 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:57:14,454 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-27 15:57:14,454 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-27 15:57:14,491 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-27 15:57:14,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [101935488] provided 1 perfect and 1 imperfect interpolant sequences [2024-01-27 15:57:14,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-01-27 15:57:14,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 6 [2024-01-27 15:57:14,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230615092] [2024-01-27 15:57:14,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:57:14,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 15:57:14,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:57:14,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 15:57:14,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-01-27 15:57:14,494 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2024-01-27 15:57:14,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 21 transitions, 68 flow. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 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 15:57:14,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:57:14,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2024-01-27 15:57:14,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:57:14,585 INFO L124 PetriNetUnfolderBase]: 83/152 cut-off events. [2024-01-27 15:57:14,585 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2024-01-27 15:57:14,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 361 conditions, 152 events. 83/152 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 415 event pairs, 24 based on Foata normal form. 6/157 useless extension candidates. Maximal degree in co-relation 348. Up to 78 conditions per place. [2024-01-27 15:57:14,588 INFO L140 encePairwiseOnDemand]: 17/21 looper letters, 31 selfloop transitions, 4 changer transitions 1/37 dead transitions. [2024-01-27 15:57:14,588 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 37 transitions, 180 flow [2024-01-27 15:57:14,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-27 15:57:14,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-27 15:57:14,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 48 transitions. [2024-01-27 15:57:14,589 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2024-01-27 15:57:14,589 INFO L175 Difference]: Start difference. First operand has 23 places, 21 transitions, 68 flow. Second operand 4 states and 48 transitions. [2024-01-27 15:57:14,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 37 transitions, 180 flow [2024-01-27 15:57:14,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 37 transitions, 176 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-01-27 15:57:14,594 INFO L231 Difference]: Finished difference. Result has 27 places, 23 transitions, 90 flow [2024-01-27 15:57:14,594 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=90, PETRI_PLACES=27, PETRI_TRANSITIONS=23} [2024-01-27 15:57:14,595 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 5 predicate places. [2024-01-27 15:57:14,595 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 23 transitions, 90 flow [2024-01-27 15:57:14,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 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 15:57:14,595 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:57:14,596 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:57:14,620 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 15:57:14,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:57:14,821 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:57:14,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:57:14,822 INFO L85 PathProgramCache]: Analyzing trace with hash -417484849, now seen corresponding path program 1 times [2024-01-27 15:57:14,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:57:14,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935969479] [2024-01-27 15:57:14,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:57:14,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:57:14,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:57:14,958 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-27 15:57:14,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:57:14,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935969479] [2024-01-27 15:57:14,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935969479] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:57:14,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:57:14,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 15:57:14,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581747557] [2024-01-27 15:57:14,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:57:14,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 15:57:14,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:57:14,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 15:57:14,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-01-27 15:57:14,964 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2024-01-27 15:57:14,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 23 transitions, 90 flow. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 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 15:57:14,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:57:14,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2024-01-27 15:57:14,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:57:15,129 INFO L124 PetriNetUnfolderBase]: 93/186 cut-off events. [2024-01-27 15:57:15,130 INFO L125 PetriNetUnfolderBase]: For 170/170 co-relation queries the response was YES. [2024-01-27 15:57:15,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 511 conditions, 186 events. 93/186 cut-off events. For 170/170 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 628 event pairs, 26 based on Foata normal form. 12/197 useless extension candidates. Maximal degree in co-relation 492. Up to 101 conditions per place. [2024-01-27 15:57:15,134 INFO L140 encePairwiseOnDemand]: 16/21 looper letters, 33 selfloop transitions, 4 changer transitions 8/46 dead transitions. [2024-01-27 15:57:15,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 46 transitions, 255 flow [2024-01-27 15:57:15,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 15:57:15,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 15:57:15,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 56 transitions. [2024-01-27 15:57:15,136 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2024-01-27 15:57:15,137 INFO L175 Difference]: Start difference. First operand has 27 places, 23 transitions, 90 flow. Second operand 5 states and 56 transitions. [2024-01-27 15:57:15,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 46 transitions, 255 flow [2024-01-27 15:57:15,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 46 transitions, 250 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-01-27 15:57:15,139 INFO L231 Difference]: Finished difference. Result has 33 places, 25 transitions, 117 flow [2024-01-27 15:57:15,140 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=117, PETRI_PLACES=33, PETRI_TRANSITIONS=25} [2024-01-27 15:57:15,141 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 11 predicate places. [2024-01-27 15:57:15,142 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 25 transitions, 117 flow [2024-01-27 15:57:15,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 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 15:57:15,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:57:15,142 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:57:15,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-27 15:57:15,142 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:57:15,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:57:15,143 INFO L85 PathProgramCache]: Analyzing trace with hash -8445923, now seen corresponding path program 2 times [2024-01-27 15:57:15,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:57:15,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839454088] [2024-01-27 15:57:15,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:57:15,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:57:15,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:57:15,241 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-27 15:57:15,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:57:15,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839454088] [2024-01-27 15:57:15,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839454088] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 15:57:15,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1159347489] [2024-01-27 15:57:15,242 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-01-27 15:57:15,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:57:15,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:57:15,243 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 15:57:15,293 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 15:57:15,362 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-01-27 15:57:15,363 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-27 15:57:15,377 INFO L262 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 6 conjunts are in the unsatisfiable core [2024-01-27 15:57:15,381 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:57:15,413 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-27 15:57:15,413 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-27 15:57:15,470 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-27 15:57:15,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1159347489] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-27 15:57:15,471 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-27 15:57:15,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2024-01-27 15:57:15,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979546605] [2024-01-27 15:57:15,471 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-27 15:57:15,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-27 15:57:15,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:57:15,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-27 15:57:15,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-01-27 15:57:15,475 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2024-01-27 15:57:15,475 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 25 transitions, 117 flow. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 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 15:57:15,475 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:57:15,475 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2024-01-27 15:57:15,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:57:15,603 INFO L124 PetriNetUnfolderBase]: 117/235 cut-off events. [2024-01-27 15:57:15,604 INFO L125 PetriNetUnfolderBase]: For 276/276 co-relation queries the response was YES. [2024-01-27 15:57:15,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 786 conditions, 235 events. 117/235 cut-off events. For 276/276 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 825 event pairs, 42 based on Foata normal form. 6/240 useless extension candidates. Maximal degree in co-relation 764. Up to 135 conditions per place. [2024-01-27 15:57:15,605 INFO L140 encePairwiseOnDemand]: 16/21 looper letters, 34 selfloop transitions, 11 changer transitions 6/52 dead transitions. [2024-01-27 15:57:15,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 52 transitions, 340 flow [2024-01-27 15:57:15,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 15:57:15,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 15:57:15,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 58 transitions. [2024-01-27 15:57:15,607 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5523809523809524 [2024-01-27 15:57:15,607 INFO L175 Difference]: Start difference. First operand has 33 places, 25 transitions, 117 flow. Second operand 5 states and 58 transitions. [2024-01-27 15:57:15,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 52 transitions, 340 flow [2024-01-27 15:57:15,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 52 transitions, 322 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-01-27 15:57:15,612 INFO L231 Difference]: Finished difference. Result has 36 places, 32 transitions, 196 flow [2024-01-27 15:57:15,612 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=196, PETRI_PLACES=36, PETRI_TRANSITIONS=32} [2024-01-27 15:57:15,613 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 14 predicate places. [2024-01-27 15:57:15,614 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 32 transitions, 196 flow [2024-01-27 15:57:15,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 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 15:57:15,614 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:57:15,614 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:57:15,628 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 15:57:15,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:57:15,827 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:57:15,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:57:15,827 INFO L85 PathProgramCache]: Analyzing trace with hash -43901795, now seen corresponding path program 2 times [2024-01-27 15:57:15,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:57:15,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256343578] [2024-01-27 15:57:15,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:57:15,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:57:15,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:57:15,973 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-27 15:57:15,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:57:15,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256343578] [2024-01-27 15:57:15,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256343578] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 15:57:15,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1955336562] [2024-01-27 15:57:15,977 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-01-27 15:57:15,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:57:15,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:57:15,993 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 15:57:16,024 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 15:57:16,100 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-01-27 15:57:16,100 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-27 15:57:16,102 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 6 conjunts are in the unsatisfiable core [2024-01-27 15:57:16,103 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:57:16,130 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-27 15:57:16,130 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-27 15:57:16,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1955336562] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:57:16,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-01-27 15:57:16,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2024-01-27 15:57:16,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727088255] [2024-01-27 15:57:16,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:57:16,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 15:57:16,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:57:16,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 15:57:16,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-01-27 15:57:16,132 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2024-01-27 15:57:16,132 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 32 transitions, 196 flow. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 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 15:57:16,132 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:57:16,132 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2024-01-27 15:57:16,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:57:16,215 INFO L124 PetriNetUnfolderBase]: 123/245 cut-off events. [2024-01-27 15:57:16,215 INFO L125 PetriNetUnfolderBase]: For 467/467 co-relation queries the response was YES. [2024-01-27 15:57:16,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 929 conditions, 245 events. 123/245 cut-off events. For 467/467 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 892 event pairs, 38 based on Foata normal form. 4/248 useless extension candidates. Maximal degree in co-relation 906. Up to 147 conditions per place. [2024-01-27 15:57:16,217 INFO L140 encePairwiseOnDemand]: 16/21 looper letters, 37 selfloop transitions, 11 changer transitions 4/53 dead transitions. [2024-01-27 15:57:16,217 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 53 transitions, 399 flow [2024-01-27 15:57:16,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 15:57:16,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 15:57:16,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 57 transitions. [2024-01-27 15:57:16,220 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5428571428571428 [2024-01-27 15:57:16,220 INFO L175 Difference]: Start difference. First operand has 36 places, 32 transitions, 196 flow. Second operand 5 states and 57 transitions. [2024-01-27 15:57:16,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 53 transitions, 399 flow [2024-01-27 15:57:16,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 53 transitions, 397 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-01-27 15:57:16,225 INFO L231 Difference]: Finished difference. Result has 43 places, 36 transitions, 273 flow [2024-01-27 15:57:16,226 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=273, PETRI_PLACES=43, PETRI_TRANSITIONS=36} [2024-01-27 15:57:16,228 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 21 predicate places. [2024-01-27 15:57:16,228 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 36 transitions, 273 flow [2024-01-27 15:57:16,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 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 15:57:16,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:57:16,229 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:57:16,243 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 15:57:16,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:57:16,442 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:57:16,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:57:16,442 INFO L85 PathProgramCache]: Analyzing trace with hash -1829208149, now seen corresponding path program 3 times [2024-01-27 15:57:16,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:57:16,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512194583] [2024-01-27 15:57:16,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:57:16,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:57:16,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:57:16,551 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-27 15:57:16,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:57:16,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512194583] [2024-01-27 15:57:16,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512194583] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 15:57:16,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [300821647] [2024-01-27 15:57:16,552 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-01-27 15:57:16,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:57:16,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:57:16,568 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 15:57:16,615 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 15:57:16,665 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-01-27 15:57:16,665 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-27 15:57:16,666 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 6 conjunts are in the unsatisfiable core [2024-01-27 15:57:16,668 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:57:16,687 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-27 15:57:16,688 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-27 15:57:16,708 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-27 15:57:16,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [300821647] provided 1 perfect and 1 imperfect interpolant sequences [2024-01-27 15:57:16,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-01-27 15:57:16,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 6 [2024-01-27 15:57:16,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633053267] [2024-01-27 15:57:16,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:57:16,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 15:57:16,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:57:16,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 15:57:16,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-01-27 15:57:16,711 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2024-01-27 15:57:16,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 36 transitions, 273 flow. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 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 15:57:16,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:57:16,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2024-01-27 15:57:16,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:57:16,778 INFO L124 PetriNetUnfolderBase]: 123/238 cut-off events. [2024-01-27 15:57:16,778 INFO L125 PetriNetUnfolderBase]: For 632/632 co-relation queries the response was YES. [2024-01-27 15:57:16,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1017 conditions, 238 events. 123/238 cut-off events. For 632/632 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 816 event pairs, 38 based on Foata normal form. 4/241 useless extension candidates. Maximal degree in co-relation 990. Up to 146 conditions per place. [2024-01-27 15:57:16,780 INFO L140 encePairwiseOnDemand]: 17/21 looper letters, 34 selfloop transitions, 9 changer transitions 4/48 dead transitions. [2024-01-27 15:57:16,780 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 48 transitions, 424 flow [2024-01-27 15:57:16,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-27 15:57:16,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-27 15:57:16,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 46 transitions. [2024-01-27 15:57:16,781 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5476190476190477 [2024-01-27 15:57:16,781 INFO L175 Difference]: Start difference. First operand has 43 places, 36 transitions, 273 flow. Second operand 4 states and 46 transitions. [2024-01-27 15:57:16,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 48 transitions, 424 flow [2024-01-27 15:57:16,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 48 transitions, 409 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-01-27 15:57:16,785 INFO L231 Difference]: Finished difference. Result has 47 places, 37 transitions, 302 flow [2024-01-27 15:57:16,785 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=302, PETRI_PLACES=47, PETRI_TRANSITIONS=37} [2024-01-27 15:57:16,786 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 25 predicate places. [2024-01-27 15:57:16,786 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 37 transitions, 302 flow [2024-01-27 15:57:16,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 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 15:57:16,786 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:57:16,787 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:57:16,820 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-01-27 15:57:16,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:57:16,999 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:57:17,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:57:17,000 INFO L85 PathProgramCache]: Analyzing trace with hash 1250643471, now seen corresponding path program 3 times [2024-01-27 15:57:17,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:57:17,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921501892] [2024-01-27 15:57:17,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:57:17,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:57:17,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:57:17,076 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-27 15:57:17,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:57:17,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921501892] [2024-01-27 15:57:17,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921501892] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:57:17,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:57:17,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 15:57:17,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636734275] [2024-01-27 15:57:17,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:57:17,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 15:57:17,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:57:17,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 15:57:17,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-01-27 15:57:17,081 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2024-01-27 15:57:17,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 37 transitions, 302 flow. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 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 15:57:17,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:57:17,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2024-01-27 15:57:17,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:57:17,177 INFO L124 PetriNetUnfolderBase]: 106/197 cut-off events. [2024-01-27 15:57:17,177 INFO L125 PetriNetUnfolderBase]: For 654/654 co-relation queries the response was YES. [2024-01-27 15:57:17,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 884 conditions, 197 events. 106/197 cut-off events. For 654/654 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 586 event pairs, 34 based on Foata normal form. 2/198 useless extension candidates. Maximal degree in co-relation 855. Up to 149 conditions per place. [2024-01-27 15:57:17,179 INFO L140 encePairwiseOnDemand]: 16/21 looper letters, 31 selfloop transitions, 11 changer transitions 2/45 dead transitions. [2024-01-27 15:57:17,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 45 transitions, 423 flow [2024-01-27 15:57:17,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 15:57:17,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 15:57:17,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 45 transitions. [2024-01-27 15:57:17,181 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-01-27 15:57:17,181 INFO L175 Difference]: Start difference. First operand has 47 places, 37 transitions, 302 flow. Second operand 5 states and 45 transitions. [2024-01-27 15:57:17,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 45 transitions, 423 flow [2024-01-27 15:57:17,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 45 transitions, 391 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-01-27 15:57:17,184 INFO L231 Difference]: Finished difference. Result has 47 places, 37 transitions, 297 flow [2024-01-27 15:57:17,184 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=297, PETRI_PLACES=47, PETRI_TRANSITIONS=37} [2024-01-27 15:57:17,185 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 25 predicate places. [2024-01-27 15:57:17,185 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 37 transitions, 297 flow [2024-01-27 15:57:17,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 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 15:57:17,186 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:57:17,186 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:57:17,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-01-27 15:57:17,186 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:57:17,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:57:17,187 INFO L85 PathProgramCache]: Analyzing trace with hash -1810524049, now seen corresponding path program 4 times [2024-01-27 15:57:17,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:57:17,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010300722] [2024-01-27 15:57:17,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:57:17,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:57:17,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:57:17,247 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-27 15:57:17,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:57:17,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010300722] [2024-01-27 15:57:17,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010300722] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:57:17,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:57:17,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 15:57:17,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936351149] [2024-01-27 15:57:17,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:57:17,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 15:57:17,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:57:17,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 15:57:17,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-01-27 15:57:17,250 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2024-01-27 15:57:17,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 37 transitions, 297 flow. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 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 15:57:17,250 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:57:17,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2024-01-27 15:57:17,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:57:17,348 INFO L124 PetriNetUnfolderBase]: 100/182 cut-off events. [2024-01-27 15:57:17,348 INFO L125 PetriNetUnfolderBase]: For 672/672 co-relation queries the response was YES. [2024-01-27 15:57:17,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 858 conditions, 182 events. 100/182 cut-off events. For 672/672 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 509 event pairs, 31 based on Foata normal form. 4/185 useless extension candidates. Maximal degree in co-relation 830. Up to 130 conditions per place. [2024-01-27 15:57:17,350 INFO L140 encePairwiseOnDemand]: 16/21 looper letters, 32 selfloop transitions, 9 changer transitions 4/46 dead transitions. [2024-01-27 15:57:17,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 46 transitions, 428 flow [2024-01-27 15:57:17,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 15:57:17,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 15:57:17,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 45 transitions. [2024-01-27 15:57:17,351 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-01-27 15:57:17,351 INFO L175 Difference]: Start difference. First operand has 47 places, 37 transitions, 297 flow. Second operand 5 states and 45 transitions. [2024-01-27 15:57:17,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 46 transitions, 428 flow [2024-01-27 15:57:17,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 46 transitions, 400 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-01-27 15:57:17,354 INFO L231 Difference]: Finished difference. Result has 50 places, 37 transitions, 306 flow [2024-01-27 15:57:17,354 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=271, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=306, PETRI_PLACES=50, PETRI_TRANSITIONS=37} [2024-01-27 15:57:17,355 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 28 predicate places. [2024-01-27 15:57:17,355 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 37 transitions, 306 flow [2024-01-27 15:57:17,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 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 15:57:17,355 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:57:17,355 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:57:17,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-01-27 15:57:17,355 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:57:17,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:57:17,355 INFO L85 PathProgramCache]: Analyzing trace with hash 680522526, now seen corresponding path program 1 times [2024-01-27 15:57:17,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:57:17,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189528129] [2024-01-27 15:57:17,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:57:17,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:57:17,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:57:17,471 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:57:17,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:57:17,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189528129] [2024-01-27 15:57:17,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189528129] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 15:57:17,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [379748108] [2024-01-27 15:57:17,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:57:17,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:57:17,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:57:17,477 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-27 15:57:17,489 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-01-27 15:57:17,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:57:17,562 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 22 conjunts are in the unsatisfiable core [2024-01-27 15:57:17,564 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:57:17,696 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-01-27 15:57:17,697 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 44 [2024-01-27 15:57:17,718 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:57:17,718 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-27 15:57:17,848 INFO L349 Elim1Store]: treesize reduction 5, result has 95.2 percent of original size [2024-01-27 15:57:17,849 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 8 new quantified variables, introduced 10 case distinctions, treesize of input 100 treesize of output 135 [2024-01-27 15:57:18,195 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:57:18,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [379748108] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-27 15:57:18,195 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-27 15:57:18,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 6] total 13 [2024-01-27 15:57:18,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169201593] [2024-01-27 15:57:18,196 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-27 15:57:18,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-01-27 15:57:18,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:57:18,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-01-27 15:57:18,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-01-27 15:57:18,198 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2024-01-27 15:57:18,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 37 transitions, 306 flow. Second operand has 13 states, 13 states have (on average 6.538461538461538) internal successors, (85), 13 states have internal predecessors, (85), 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 15:57:18,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:57:18,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2024-01-27 15:57:18,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:57:18,550 INFO L124 PetriNetUnfolderBase]: 227/400 cut-off events. [2024-01-27 15:57:18,550 INFO L125 PetriNetUnfolderBase]: For 1425/1425 co-relation queries the response was YES. [2024-01-27 15:57:18,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1976 conditions, 400 events. 227/400 cut-off events. For 1425/1425 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1443 event pairs, 22 based on Foata normal form. 25/423 useless extension candidates. Maximal degree in co-relation 1921. Up to 181 conditions per place. [2024-01-27 15:57:18,553 INFO L140 encePairwiseOnDemand]: 13/21 looper letters, 40 selfloop transitions, 18 changer transitions 55/114 dead transitions. [2024-01-27 15:57:18,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 114 transitions, 1090 flow [2024-01-27 15:57:18,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-01-27 15:57:18,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-01-27 15:57:18,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 142 transitions. [2024-01-27 15:57:18,555 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4226190476190476 [2024-01-27 15:57:18,555 INFO L175 Difference]: Start difference. First operand has 50 places, 37 transitions, 306 flow. Second operand 16 states and 142 transitions. [2024-01-27 15:57:18,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 114 transitions, 1090 flow [2024-01-27 15:57:18,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 114 transitions, 1000 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-01-27 15:57:18,561 INFO L231 Difference]: Finished difference. Result has 63 places, 40 transitions, 367 flow [2024-01-27 15:57:18,561 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=273, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=367, PETRI_PLACES=63, PETRI_TRANSITIONS=40} [2024-01-27 15:57:18,562 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 41 predicate places. [2024-01-27 15:57:18,562 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 40 transitions, 367 flow [2024-01-27 15:57:18,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.538461538461538) internal successors, (85), 13 states have internal predecessors, (85), 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 15:57:18,562 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:57:18,562 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:57:18,576 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-01-27 15:57:18,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-01-27 15:57:18,775 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:57:18,775 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:57:18,775 INFO L85 PathProgramCache]: Analyzing trace with hash -1857081574, now seen corresponding path program 2 times [2024-01-27 15:57:18,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:57:18,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074100277] [2024-01-27 15:57:18,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:57:18,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:57:18,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:57:18,914 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-01-27 15:57:18,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:57:18,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074100277] [2024-01-27 15:57:18,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074100277] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 15:57:18,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1124359493] [2024-01-27 15:57:18,915 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-01-27 15:57:18,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:57:18,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:57:18,916 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-27 15:57:18,939 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-01-27 15:57:18,997 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-01-27 15:57:18,998 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-27 15:57:18,999 INFO L262 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 39 conjunts are in the unsatisfiable core [2024-01-27 15:57:19,001 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:57:19,030 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-01-27 15:57:19,046 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-01-27 15:57:19,210 INFO L349 Elim1Store]: treesize reduction 34, result has 30.6 percent of original size [2024-01-27 15:57:19,211 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 6 case distinctions, treesize of input 79 treesize of output 48 [2024-01-27 15:57:19,246 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:57:19,246 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-27 15:57:20,248 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 496 treesize of output 456 [2024-01-27 15:57:21,318 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-01-27 15:57:21,320 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 20 new quantified variables, introduced 66 case distinctions, treesize of input 108280 treesize of output 75088 [2024-01-27 15:57:31,739 WARN L293 SmtUtils]: Spent 10.42s on a formula simplification. DAG size of input: 1286 DAG size of output: 982 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-01-27 16:00:10,951 WARN L249 Executor]: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) stderr output: (error "out of memory") [2024-01-27 16:00:10,954 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 101 [2024-01-27 16:00:10,955 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2024-01-27 16:00:10,967 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-01-27 16:00:11,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 16:00:11,157 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseSuccess(Executor.java:277) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.push(Scriptor.java:133) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.push(DiffWrapperScript.java:90) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.push(WrapperScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.push(HistoryRecordingScript.java:107) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:48) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.checkRedundancy(SimplifyDDA2.java:281) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convertForPreprocessedInputTerms(SimplifyDDA2.java:516) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convert(SimplifyDDA2.java:500) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convert(SimplifyDDA2.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.simplify(SimplifyDDA2.java:606) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:252) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplifyWithStatistics(SmtUtils.java:324) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify(QuantifierPusher.java:731) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:133) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.pushMinionEliminatees(QuantifierPushUtilsForSubsetPush.java:255) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:338) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:189) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:283) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:51) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:238) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:399) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:271) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:341) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:184) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:110) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:416) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:226) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1518) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:701) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:258) ... 69 more [2024-01-27 16:00:11,161 INFO L158 Benchmark]: Toolchain (without parser) took 178831.33ms. Allocated memory was 163.6MB in the beginning and 3.1GB in the end (delta: 2.9GB). Free memory was 89.6MB in the beginning and 1.9GB in the end (delta: -1.8GB). Peak memory consumption was 1.9GB. Max. memory is 16.1GB. [2024-01-27 16:00:11,162 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 163.6MB. Free memory is still 115.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-01-27 16:00:11,162 INFO L158 Benchmark]: CACSL2BoogieTranslator took 202.90ms. Allocated memory is still 163.6MB. Free memory was 89.4MB in the beginning and 77.2MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-01-27 16:00:11,162 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.23ms. Allocated memory is still 163.6MB. Free memory was 77.2MB in the beginning and 75.2MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-27 16:00:11,162 INFO L158 Benchmark]: Boogie Preprocessor took 64.31ms. Allocated memory is still 163.6MB. Free memory was 75.2MB in the beginning and 72.5MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-27 16:00:11,162 INFO L158 Benchmark]: RCFGBuilder took 566.28ms. Allocated memory was 163.6MB in the beginning and 224.4MB in the end (delta: 60.8MB). Free memory was 72.5MB in the beginning and 157.9MB in the end (delta: -85.4MB). Peak memory consumption was 27.9MB. Max. memory is 16.1GB. [2024-01-27 16:00:11,163 INFO L158 Benchmark]: TraceAbstraction took 177962.25ms. Allocated memory was 224.4MB in the beginning and 3.1GB in the end (delta: 2.9GB). Free memory was 156.9MB in the beginning and 1.9GB in the end (delta: -1.7GB). Peak memory consumption was 1.9GB. Max. memory is 16.1GB. [2024-01-27 16:00:11,164 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 163.6MB. Free memory is still 115.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 202.90ms. Allocated memory is still 163.6MB. Free memory was 89.4MB in the beginning and 77.2MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.23ms. Allocated memory is still 163.6MB. Free memory was 77.2MB in the beginning and 75.2MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 64.31ms. Allocated memory is still 163.6MB. Free memory was 75.2MB in the beginning and 72.5MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 566.28ms. Allocated memory was 163.6MB in the beginning and 224.4MB in the end (delta: 60.8MB). Free memory was 72.5MB in the beginning and 157.9MB in the end (delta: -85.4MB). Peak memory consumption was 27.9MB. Max. memory is 16.1GB. * TraceAbstraction took 177962.25ms. Allocated memory was 224.4MB in the beginning and 3.1GB in the end (delta: 2.9GB). Free memory was 156.9MB in the beginning and 1.9GB in the end (delta: -1.7GB). Peak memory consumption was 1.9GB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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/unroll-4.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.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 bb07434636f33664cc09ed992a41516efeea5f96121c916fb8904844e76d9fcd --- Real Ultimate output --- This is Ultimate 0.2.4-dev-a340643-m [2024-01-27 16:00:13,510 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-27 16:00:13,587 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-01-27 16:00:13,592 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-27 16:00:13,592 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-27 16:00:13,620 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-27 16:00:13,620 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-27 16:00:13,621 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-27 16:00:13,621 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-27 16:00:13,625 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-27 16:00:13,625 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-27 16:00:13,625 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-27 16:00:13,626 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-27 16:00:13,627 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-27 16:00:13,627 INFO L153 SettingsManager]: * Use SBE=true [2024-01-27 16:00:13,627 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-27 16:00:13,628 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-27 16:00:13,628 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-27 16:00:13,628 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-27 16:00:13,628 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-27 16:00:13,628 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-27 16:00:13,629 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-27 16:00:13,629 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-27 16:00:13,629 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-01-27 16:00:13,630 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-01-27 16:00:13,630 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-27 16:00:13,630 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-01-27 16:00:13,630 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-27 16:00:13,630 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-27 16:00:13,631 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-27 16:00:13,632 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-27 16:00:13,632 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-27 16:00:13,632 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-27 16:00:13,632 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-27 16:00:13,632 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 16:00:13,632 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-27 16:00:13,633 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-27 16:00:13,633 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-27 16:00:13,633 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-01-27 16:00:13,634 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-01-27 16:00:13,634 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-27 16:00:13,634 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-27 16:00:13,634 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-27 16:00:13,634 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-27 16:00:13,635 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-27 16:00:13,635 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-01-27 16:00:13,635 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bb07434636f33664cc09ed992a41516efeea5f96121c916fb8904844e76d9fcd [2024-01-27 16:00:13,908 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-27 16:00:13,933 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-27 16:00:13,935 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-27 16:00:13,937 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-27 16:00:13,938 INFO L274 PluginConnector]: CDTParser initialized [2024-01-27 16:00:13,940 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/unroll-4.wvr.c [2024-01-27 16:00:15,179 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-27 16:00:15,398 INFO L384 CDTParser]: Found 1 translation units. [2024-01-27 16:00:15,399 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/unroll-4.wvr.c [2024-01-27 16:00:15,408 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fab6a7f5f/ce97be0518774c9d85f380a9ab360a77/FLAGe6af83fad [2024-01-27 16:00:15,432 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fab6a7f5f/ce97be0518774c9d85f380a9ab360a77 [2024-01-27 16:00:15,435 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-27 16:00:15,436 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-01-27 16:00:15,443 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-27 16:00:15,443 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-27 16:00:15,447 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-27 16:00:15,447 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 04:00:15" (1/1) ... [2024-01-27 16:00:15,448 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fea28cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:00:15, skipping insertion in model container [2024-01-27 16:00:15,448 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 04:00:15" (1/1) ... [2024-01-27 16:00:15,463 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-27 16:00:15,580 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/unroll-4.wvr.c[2598,2611] [2024-01-27 16:00:15,587 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 16:00:15,596 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-01-27 16:00:15,598 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-27 16:00:15,607 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/unroll-4.wvr.c[2598,2611] [2024-01-27 16:00:15,608 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 16:00:15,611 INFO L202 MainTranslator]: Completed pre-run [2024-01-27 16:00:15,630 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/unroll-4.wvr.c[2598,2611] [2024-01-27 16:00:15,632 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 16:00:15,660 INFO L206 MainTranslator]: Completed translation [2024-01-27 16:00:15,660 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:00:15 WrapperNode [2024-01-27 16:00:15,660 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-27 16:00:15,661 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-27 16:00:15,661 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-27 16:00:15,661 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-27 16:00:15,666 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:00:15" (1/1) ... [2024-01-27 16:00:15,690 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:00:15" (1/1) ... [2024-01-27 16:00:15,721 INFO L138 Inliner]: procedures = 26, calls = 36, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 157 [2024-01-27 16:00:15,721 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-27 16:00:15,722 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-27 16:00:15,722 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-27 16:00:15,723 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-27 16:00:15,732 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:00:15" (1/1) ... [2024-01-27 16:00:15,732 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:00:15" (1/1) ... [2024-01-27 16:00:15,744 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:00:15" (1/1) ... [2024-01-27 16:00:15,770 INFO L175 MemorySlicer]: Split 12 memory accesses to 4 slices as follows [2, 2, 2, 6]. 50 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 3 writes are split as follows [0, 1, 1, 1]. [2024-01-27 16:00:15,770 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:00:15" (1/1) ... [2024-01-27 16:00:15,770 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:00:15" (1/1) ... [2024-01-27 16:00:15,790 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:00:15" (1/1) ... [2024-01-27 16:00:15,794 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:00:15" (1/1) ... [2024-01-27 16:00:15,798 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:00:15" (1/1) ... [2024-01-27 16:00:15,801 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:00:15" (1/1) ... [2024-01-27 16:00:15,804 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-27 16:00:15,808 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-27 16:00:15,809 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-27 16:00:15,809 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-27 16:00:15,809 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:00:15" (1/1) ... [2024-01-27 16:00:15,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 16:00:15,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 16:00:15,854 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 16:00:15,875 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 16:00:15,902 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-27 16:00:15,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-01-27 16:00:15,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-01-27 16:00:15,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-01-27 16:00:15,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2024-01-27 16:00:15,903 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-27 16:00:15,903 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-01-27 16:00:15,903 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-01-27 16:00:15,903 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2024-01-27 16:00:15,903 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2024-01-27 16:00:15,904 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-01-27 16:00:15,904 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-01-27 16:00:15,904 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-01-27 16:00:15,904 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-01-27 16:00:15,905 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-01-27 16:00:15,905 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-27 16:00:15,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-27 16:00:15,905 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-27 16:00:15,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-01-27 16:00:15,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-01-27 16:00:15,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2024-01-27 16:00:15,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2024-01-27 16:00:15,909 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 16:00:16,036 INFO L244 CfgBuilder]: Building ICFG [2024-01-27 16:00:16,037 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-27 16:00:16,371 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-27 16:00:16,371 INFO L293 CfgBuilder]: Performing block encoding [2024-01-27 16:00:16,661 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-27 16:00:16,661 INFO L320 CfgBuilder]: Removed 3 assume(true) statements. [2024-01-27 16:00:16,662 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 04:00:16 BoogieIcfgContainer [2024-01-27 16:00:16,662 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-27 16:00:16,663 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-27 16:00:16,663 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-27 16:00:16,666 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-27 16:00:16,666 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 04:00:15" (1/3) ... [2024-01-27 16:00:16,667 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a7f5489 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 04:00:16, skipping insertion in model container [2024-01-27 16:00:16,667 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:00:15" (2/3) ... [2024-01-27 16:00:16,668 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a7f5489 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 04:00:16, skipping insertion in model container [2024-01-27 16:00:16,668 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 04:00:16" (3/3) ... [2024-01-27 16:00:16,670 INFO L112 eAbstractionObserver]: Analyzing ICFG unroll-4.wvr.c [2024-01-27 16:00:16,677 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2024-01-27 16:00:16,685 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-27 16:00:16,685 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-01-27 16:00:16,685 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-27 16:00:16,723 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-01-27 16:00:16,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 25 places, 21 transitions, 56 flow [2024-01-27 16:00:16,778 INFO L124 PetriNetUnfolderBase]: 3/19 cut-off events. [2024-01-27 16:00:16,778 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-01-27 16:00:16,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28 conditions, 19 events. 3/19 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 10 event pairs, 0 based on Foata normal form. 0/15 useless extension candidates. Maximal degree in co-relation 11. Up to 2 conditions per place. [2024-01-27 16:00:16,782 INFO L82 GeneralOperation]: Start removeDead. Operand has 25 places, 21 transitions, 56 flow [2024-01-27 16:00:16,786 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 22 places, 18 transitions, 48 flow [2024-01-27 16:00:16,798 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-27 16:00:16,805 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;@3ca2cff9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-27 16:00:16,805 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-01-27 16:00:16,813 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-27 16:00:16,813 INFO L124 PetriNetUnfolderBase]: 3/17 cut-off events. [2024-01-27 16:00:16,813 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-01-27 16:00:16,814 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:00:16,814 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 16:00:16,814 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 16:00:16,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:00:16,818 INFO L85 PathProgramCache]: Analyzing trace with hash 1455258883, now seen corresponding path program 1 times [2024-01-27 16:00:16,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-01-27 16:00:16,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [168150104] [2024-01-27 16:00:16,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:00:16,830 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-01-27 16:00:16,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-01-27 16:00:16,832 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-01-27 16:00:16,886 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-01-27 16:00:17,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:00:17,006 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 3 conjunts are in the unsatisfiable core [2024-01-27 16:00:17,010 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 16:00:17,129 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 16:00:17,129 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-27 16:00:17,129 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-01-27 16:00:17,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [168150104] [2024-01-27 16:00:17,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [168150104] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:00:17,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:00:17,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-27 16:00:17,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099642506] [2024-01-27 16:00:17,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:00:17,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 16:00:17,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-01-27 16:00:17,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 16:00:17,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 16:00:17,171 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2024-01-27 16:00:17,173 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 18 transitions, 48 flow. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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 16:00:17,173 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:00:17,173 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2024-01-27 16:00:17,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:00:17,303 INFO L124 PetriNetUnfolderBase]: 75/137 cut-off events. [2024-01-27 16:00:17,303 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2024-01-27 16:00:17,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 297 conditions, 137 events. 75/137 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 353 event pairs, 24 based on Foata normal form. 1/105 useless extension candidates. Maximal degree in co-relation 220. Up to 79 conditions per place. [2024-01-27 16:00:17,307 INFO L140 encePairwiseOnDemand]: 17/21 looper letters, 25 selfloop transitions, 3 changer transitions 1/30 dead transitions. [2024-01-27 16:00:17,307 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 30 transitions, 139 flow [2024-01-27 16:00:17,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 16:00:17,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 16:00:17,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 39 transitions. [2024-01-27 16:00:17,317 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6190476190476191 [2024-01-27 16:00:17,318 INFO L175 Difference]: Start difference. First operand has 22 places, 18 transitions, 48 flow. Second operand 3 states and 39 transitions. [2024-01-27 16:00:17,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 30 transitions, 139 flow [2024-01-27 16:00:17,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 30 transitions, 125 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-01-27 16:00:17,323 INFO L231 Difference]: Finished difference. Result has 21 places, 20 transitions, 59 flow [2024-01-27 16:00:17,325 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=59, PETRI_PLACES=21, PETRI_TRANSITIONS=20} [2024-01-27 16:00:17,330 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, -1 predicate places. [2024-01-27 16:00:17,330 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 20 transitions, 59 flow [2024-01-27 16:00:17,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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 16:00:17,331 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:00:17,331 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 16:00:17,339 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2024-01-27 16:00:17,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-01-27 16:00:17,546 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 16:00:17,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:00:17,548 INFO L85 PathProgramCache]: Analyzing trace with hash 575915524, now seen corresponding path program 1 times [2024-01-27 16:00:17,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-01-27 16:00:17,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [425678136] [2024-01-27 16:00:17,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:00:17,550 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-01-27 16:00:17,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-01-27 16:00:17,565 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-01-27 16:00:17,582 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-01-27 16:00:17,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:00:17,657 INFO L262 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 6 conjunts are in the unsatisfiable core [2024-01-27 16:00:17,659 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 16:00:17,696 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-27 16:00:17,697 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-27 16:00:17,697 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-01-27 16:00:17,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [425678136] [2024-01-27 16:00:17,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [425678136] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:00:17,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:00:17,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-27 16:00:17,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260295684] [2024-01-27 16:00:17,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:00:17,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 16:00:17,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-01-27 16:00:17,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 16:00:17,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 16:00:17,703 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2024-01-27 16:00:17,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 20 transitions, 59 flow. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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 16:00:17,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:00:17,706 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2024-01-27 16:00:17,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:00:17,801 INFO L124 PetriNetUnfolderBase]: 75/138 cut-off events. [2024-01-27 16:00:17,801 INFO L125 PetriNetUnfolderBase]: For 22/22 co-relation queries the response was YES. [2024-01-27 16:00:17,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 335 conditions, 138 events. 75/138 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 340 event pairs, 48 based on Foata normal form. 0/137 useless extension candidates. Maximal degree in co-relation 120. Up to 137 conditions per place. [2024-01-27 16:00:17,803 INFO L140 encePairwiseOnDemand]: 18/21 looper letters, 18 selfloop transitions, 2 changer transitions 0/21 dead transitions. [2024-01-27 16:00:17,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 21 transitions, 101 flow [2024-01-27 16:00:17,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 16:00:17,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 16:00:17,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 28 transitions. [2024-01-27 16:00:17,804 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-01-27 16:00:17,804 INFO L175 Difference]: Start difference. First operand has 21 places, 20 transitions, 59 flow. Second operand 3 states and 28 transitions. [2024-01-27 16:00:17,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 21 transitions, 101 flow [2024-01-27 16:00:17,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 21 transitions, 98 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-27 16:00:17,805 INFO L231 Difference]: Finished difference. Result has 23 places, 21 transitions, 68 flow [2024-01-27 16:00:17,805 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=68, PETRI_PLACES=23, PETRI_TRANSITIONS=21} [2024-01-27 16:00:17,805 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 1 predicate places. [2024-01-27 16:00:17,806 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 21 transitions, 68 flow [2024-01-27 16:00:17,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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 16:00:17,806 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:00:17,806 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 16:00:17,815 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2024-01-27 16:00:18,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-01-27 16:00:18,009 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 16:00:18,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:00:18,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1061625399, now seen corresponding path program 1 times [2024-01-27 16:00:18,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-01-27 16:00:18,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1661994384] [2024-01-27 16:00:18,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:00:18,010 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-01-27 16:00:18,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-01-27 16:00:18,011 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-01-27 16:00:18,013 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2024-01-27 16:00:18,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:00:18,112 INFO L262 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 4 conjunts are in the unsatisfiable core [2024-01-27 16:00:18,113 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 16:00:18,138 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-27 16:00:18,138 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-27 16:00:18,213 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-27 16:00:18,213 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-01-27 16:00:18,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1661994384] [2024-01-27 16:00:18,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1661994384] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-27 16:00:18,213 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-01-27 16:00:18,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2024-01-27 16:00:18,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887720779] [2024-01-27 16:00:18,214 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-01-27 16:00:18,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-27 16:00:18,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-01-27 16:00:18,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-27 16:00:18,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-01-27 16:00:18,216 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2024-01-27 16:00:18,216 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 21 transitions, 68 flow. Second operand has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 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 16:00:18,216 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:00:18,216 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2024-01-27 16:00:18,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:00:18,556 INFO L124 PetriNetUnfolderBase]: 136/253 cut-off events. [2024-01-27 16:00:18,556 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2024-01-27 16:00:18,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 608 conditions, 253 events. 136/253 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 864 event pairs, 26 based on Foata normal form. 28/280 useless extension candidates. Maximal degree in co-relation 595. Up to 86 conditions per place. [2024-01-27 16:00:18,558 INFO L140 encePairwiseOnDemand]: 17/21 looper letters, 53 selfloop transitions, 9 changer transitions 0/63 dead transitions. [2024-01-27 16:00:18,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 63 transitions, 310 flow [2024-01-27 16:00:18,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-27 16:00:18,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-27 16:00:18,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 83 transitions. [2024-01-27 16:00:18,560 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.564625850340136 [2024-01-27 16:00:18,560 INFO L175 Difference]: Start difference. First operand has 23 places, 21 transitions, 68 flow. Second operand 7 states and 83 transitions. [2024-01-27 16:00:18,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 63 transitions, 310 flow [2024-01-27 16:00:18,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 63 transitions, 306 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-01-27 16:00:18,562 INFO L231 Difference]: Finished difference. Result has 33 places, 28 transitions, 140 flow [2024-01-27 16:00:18,563 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=140, PETRI_PLACES=33, PETRI_TRANSITIONS=28} [2024-01-27 16:00:18,563 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 11 predicate places. [2024-01-27 16:00:18,563 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 28 transitions, 140 flow [2024-01-27 16:00:18,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 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 16:00:18,564 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:00:18,564 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 16:00:18,569 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2024-01-27 16:00:18,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-01-27 16:00:18,767 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 16:00:18,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:00:18,767 INFO L85 PathProgramCache]: Analyzing trace with hash -1210985895, now seen corresponding path program 1 times [2024-01-27 16:00:18,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-01-27 16:00:18,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2126070301] [2024-01-27 16:00:18,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:00:18,769 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-01-27 16:00:18,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-01-27 16:00:18,770 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-01-27 16:00:18,772 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2024-01-27 16:00:18,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:00:18,852 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 6 conjunts are in the unsatisfiable core [2024-01-27 16:00:18,853 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 16:00:18,936 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-27 16:00:18,936 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-27 16:00:18,989 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-27 16:00:18,989 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-01-27 16:00:18,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2126070301] [2024-01-27 16:00:18,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2126070301] provided 1 perfect and 1 imperfect interpolant sequences [2024-01-27 16:00:18,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-01-27 16:00:18,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-01-27 16:00:18,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302219428] [2024-01-27 16:00:18,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:00:18,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 16:00:18,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-01-27 16:00:18,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 16:00:18,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-01-27 16:00:18,994 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2024-01-27 16:00:18,994 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 28 transitions, 140 flow. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 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 16:00:18,994 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:00:18,994 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2024-01-27 16:00:18,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:00:19,174 INFO L124 PetriNetUnfolderBase]: 132/242 cut-off events. [2024-01-27 16:00:19,174 INFO L125 PetriNetUnfolderBase]: For 290/290 co-relation queries the response was YES. [2024-01-27 16:00:19,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 803 conditions, 242 events. 132/242 cut-off events. For 290/290 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 764 event pairs, 24 based on Foata normal form. 4/245 useless extension candidates. Maximal degree in co-relation 781. Up to 165 conditions per place. [2024-01-27 16:00:19,178 INFO L140 encePairwiseOnDemand]: 17/21 looper letters, 34 selfloop transitions, 6 changer transitions 1/42 dead transitions. [2024-01-27 16:00:19,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 42 transitions, 274 flow [2024-01-27 16:00:19,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-27 16:00:19,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-27 16:00:19,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 46 transitions. [2024-01-27 16:00:19,181 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5476190476190477 [2024-01-27 16:00:19,181 INFO L175 Difference]: Start difference. First operand has 33 places, 28 transitions, 140 flow. Second operand 4 states and 46 transitions. [2024-01-27 16:00:19,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 42 transitions, 274 flow [2024-01-27 16:00:19,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 42 transitions, 268 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-01-27 16:00:19,191 INFO L231 Difference]: Finished difference. Result has 38 places, 30 transitions, 174 flow [2024-01-27 16:00:19,191 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=174, PETRI_PLACES=38, PETRI_TRANSITIONS=30} [2024-01-27 16:00:19,193 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 16 predicate places. [2024-01-27 16:00:19,193 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 30 transitions, 174 flow [2024-01-27 16:00:19,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 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 16:00:19,193 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:00:19,194 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 16:00:19,204 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2024-01-27 16:00:19,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-01-27 16:00:19,402 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 16:00:19,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:00:19,402 INFO L85 PathProgramCache]: Analyzing trace with hash -807032159, now seen corresponding path program 2 times [2024-01-27 16:00:19,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-01-27 16:00:19,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2028367786] [2024-01-27 16:00:19,403 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-01-27 16:00:19,404 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-01-27 16:00:19,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-01-27 16:00:19,410 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-01-27 16:00:19,411 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2024-01-27 16:00:19,517 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-01-27 16:00:19,517 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-27 16:00:19,520 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 3 conjunts are in the unsatisfiable core [2024-01-27 16:00:19,521 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 16:00:19,555 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-27 16:00:19,555 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-27 16:00:19,555 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-01-27 16:00:19,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2028367786] [2024-01-27 16:00:19,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2028367786] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:00:19,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:00:19,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-27 16:00:19,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727077606] [2024-01-27 16:00:19,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:00:19,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 16:00:19,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-01-27 16:00:19,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 16:00:19,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-27 16:00:19,557 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2024-01-27 16:00:19,557 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 30 transitions, 174 flow. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 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 16:00:19,557 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:00:19,557 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2024-01-27 16:00:19,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:00:19,707 INFO L124 PetriNetUnfolderBase]: 122/221 cut-off events. [2024-01-27 16:00:19,707 INFO L125 PetriNetUnfolderBase]: For 457/457 co-relation queries the response was YES. [2024-01-27 16:00:19,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 784 conditions, 221 events. 122/221 cut-off events. For 457/457 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 661 event pairs, 53 based on Foata normal form. 4/224 useless extension candidates. Maximal degree in co-relation 759. Up to 152 conditions per place. [2024-01-27 16:00:19,709 INFO L140 encePairwiseOnDemand]: 17/21 looper letters, 29 selfloop transitions, 6 changer transitions 9/45 dead transitions. [2024-01-27 16:00:19,709 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 45 transitions, 310 flow [2024-01-27 16:00:19,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-27 16:00:19,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-27 16:00:19,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 46 transitions. [2024-01-27 16:00:19,710 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5476190476190477 [2024-01-27 16:00:19,710 INFO L175 Difference]: Start difference. First operand has 38 places, 30 transitions, 174 flow. Second operand 4 states and 46 transitions. [2024-01-27 16:00:19,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 45 transitions, 310 flow [2024-01-27 16:00:19,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 45 transitions, 301 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-01-27 16:00:19,713 INFO L231 Difference]: Finished difference. Result has 42 places, 30 transitions, 187 flow [2024-01-27 16:00:19,713 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=187, PETRI_PLACES=42, PETRI_TRANSITIONS=30} [2024-01-27 16:00:19,713 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 20 predicate places. [2024-01-27 16:00:19,713 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 30 transitions, 187 flow [2024-01-27 16:00:19,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 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 16:00:19,713 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:00:19,714 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 16:00:19,717 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2024-01-27 16:00:19,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-01-27 16:00:19,917 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 16:00:19,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:00:19,917 INFO L85 PathProgramCache]: Analyzing trace with hash 1226200484, now seen corresponding path program 2 times [2024-01-27 16:00:19,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-01-27 16:00:19,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1273806249] [2024-01-27 16:00:19,918 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-01-27 16:00:19,918 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-01-27 16:00:19,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-01-27 16:00:19,919 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-01-27 16:00:19,921 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2024-01-27 16:00:20,021 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-01-27 16:00:20,021 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-27 16:00:20,024 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 9 conjunts are in the unsatisfiable core [2024-01-27 16:00:20,026 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 16:00:20,081 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-01-27 16:00:20,081 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-27 16:00:20,212 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-27 16:00:20,212 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-01-27 16:00:20,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1273806249] [2024-01-27 16:00:20,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1273806249] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-27 16:00:20,212 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-01-27 16:00:20,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8] total 12 [2024-01-27 16:00:20,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265304517] [2024-01-27 16:00:20,213 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-01-27 16:00:20,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-01-27 16:00:20,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-01-27 16:00:20,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-01-27 16:00:20,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-01-27 16:00:20,214 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2024-01-27 16:00:20,214 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 30 transitions, 187 flow. Second operand has 12 states, 12 states have (on average 5.333333333333333) internal successors, (64), 12 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:00:20,214 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:00:20,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2024-01-27 16:00:20,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:00:21,240 INFO L124 PetriNetUnfolderBase]: 163/290 cut-off events. [2024-01-27 16:00:21,240 INFO L125 PetriNetUnfolderBase]: For 730/730 co-relation queries the response was YES. [2024-01-27 16:00:21,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1081 conditions, 290 events. 163/290 cut-off events. For 730/730 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 935 event pairs, 2 based on Foata normal form. 10/299 useless extension candidates. Maximal degree in co-relation 1054. Up to 129 conditions per place. [2024-01-27 16:00:21,242 INFO L140 encePairwiseOnDemand]: 15/21 looper letters, 65 selfloop transitions, 45 changer transitions 0/111 dead transitions. [2024-01-27 16:00:21,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 111 transitions, 730 flow [2024-01-27 16:00:21,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-01-27 16:00:21,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-01-27 16:00:21,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 167 transitions. [2024-01-27 16:00:21,247 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3976190476190476 [2024-01-27 16:00:21,247 INFO L175 Difference]: Start difference. First operand has 42 places, 30 transitions, 187 flow. Second operand 20 states and 167 transitions. [2024-01-27 16:00:21,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 111 transitions, 730 flow [2024-01-27 16:00:21,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 111 transitions, 686 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-01-27 16:00:21,261 INFO L231 Difference]: Finished difference. Result has 67 places, 69 transitions, 543 flow [2024-01-27 16:00:21,262 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=543, PETRI_PLACES=67, PETRI_TRANSITIONS=69} [2024-01-27 16:00:21,265 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 45 predicate places. [2024-01-27 16:00:21,265 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 69 transitions, 543 flow [2024-01-27 16:00:21,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.333333333333333) internal successors, (64), 12 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:00:21,265 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:00:21,265 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 16:00:21,269 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2024-01-27 16:00:21,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-01-27 16:00:21,469 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 16:00:21,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:00:21,470 INFO L85 PathProgramCache]: Analyzing trace with hash 68930686, now seen corresponding path program 3 times [2024-01-27 16:00:21,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-01-27 16:00:21,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1767736434] [2024-01-27 16:00:21,471 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-01-27 16:00:21,471 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-01-27 16:00:21,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-01-27 16:00:21,472 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-01-27 16:00:21,473 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2024-01-27 16:00:21,570 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-01-27 16:00:21,570 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-27 16:00:21,573 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 3 conjunts are in the unsatisfiable core [2024-01-27 16:00:21,574 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 16:00:21,595 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-01-27 16:00:21,595 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-27 16:00:21,596 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-01-27 16:00:21,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1767736434] [2024-01-27 16:00:21,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1767736434] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:00:21,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:00:21,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-27 16:00:21,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585617175] [2024-01-27 16:00:21,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:00:21,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 16:00:21,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-01-27 16:00:21,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 16:00:21,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-27 16:00:21,597 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2024-01-27 16:00:21,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 69 transitions, 543 flow. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 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 16:00:21,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:00:21,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2024-01-27 16:00:21,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:00:21,774 INFO L124 PetriNetUnfolderBase]: 173/319 cut-off events. [2024-01-27 16:00:21,774 INFO L125 PetriNetUnfolderBase]: For 2178/2178 co-relation queries the response was YES. [2024-01-27 16:00:21,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1651 conditions, 319 events. 173/319 cut-off events. For 2178/2178 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1085 event pairs, 48 based on Foata normal form. 20/338 useless extension candidates. Maximal degree in co-relation 1615. Up to 191 conditions per place. [2024-01-27 16:00:21,777 INFO L140 encePairwiseOnDemand]: 17/21 looper letters, 55 selfloop transitions, 22 changer transitions 4/82 dead transitions. [2024-01-27 16:00:21,778 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 82 transitions, 796 flow [2024-01-27 16:00:21,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-27 16:00:21,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-27 16:00:21,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 45 transitions. [2024-01-27 16:00:21,779 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5357142857142857 [2024-01-27 16:00:21,779 INFO L175 Difference]: Start difference. First operand has 67 places, 69 transitions, 543 flow. Second operand 4 states and 45 transitions. [2024-01-27 16:00:21,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 82 transitions, 796 flow [2024-01-27 16:00:21,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 82 transitions, 581 flow, removed 78 selfloop flow, removed 9 redundant places. [2024-01-27 16:00:21,786 INFO L231 Difference]: Finished difference. Result has 62 places, 62 transitions, 409 flow [2024-01-27 16:00:21,786 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=303, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=409, PETRI_PLACES=62, PETRI_TRANSITIONS=62} [2024-01-27 16:00:21,786 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 40 predicate places. [2024-01-27 16:00:21,786 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 62 transitions, 409 flow [2024-01-27 16:00:21,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 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 16:00:21,787 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:00:21,787 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 16:00:21,801 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2024-01-27 16:00:21,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-01-27 16:00:21,991 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 16:00:21,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:00:21,991 INFO L85 PathProgramCache]: Analyzing trace with hash -892535106, now seen corresponding path program 4 times [2024-01-27 16:00:21,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-01-27 16:00:21,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1887894146] [2024-01-27 16:00:21,992 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-01-27 16:00:21,992 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-01-27 16:00:21,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-01-27 16:00:21,993 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-01-27 16:00:21,995 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2024-01-27 16:00:22,096 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-01-27 16:00:22,097 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-27 16:00:22,100 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 9 conjunts are in the unsatisfiable core [2024-01-27 16:00:22,101 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 16:00:22,216 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-27 16:00:22,216 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-27 16:00:22,264 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-01-27 16:00:22,264 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-01-27 16:00:22,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1887894146] [2024-01-27 16:00:22,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1887894146] provided 1 perfect and 1 imperfect interpolant sequences [2024-01-27 16:00:22,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-01-27 16:00:22,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2024-01-27 16:00:22,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213772579] [2024-01-27 16:00:22,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:00:22,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 16:00:22,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-01-27 16:00:22,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 16:00:22,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-01-27 16:00:22,265 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2024-01-27 16:00:22,266 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 62 transitions, 409 flow. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 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 16:00:22,266 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:00:22,266 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2024-01-27 16:00:22,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:00:22,433 INFO L124 PetriNetUnfolderBase]: 169/304 cut-off events. [2024-01-27 16:00:22,433 INFO L125 PetriNetUnfolderBase]: For 2055/2055 co-relation queries the response was YES. [2024-01-27 16:00:22,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1452 conditions, 304 events. 169/304 cut-off events. For 2055/2055 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1001 event pairs, 25 based on Foata normal form. 14/317 useless extension candidates. Maximal degree in co-relation 1418. Up to 223 conditions per place. [2024-01-27 16:00:22,436 INFO L140 encePairwiseOnDemand]: 17/21 looper letters, 52 selfloop transitions, 15 changer transitions 1/69 dead transitions. [2024-01-27 16:00:22,436 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 69 transitions, 582 flow [2024-01-27 16:00:22,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-27 16:00:22,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-27 16:00:22,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 44 transitions. [2024-01-27 16:00:22,436 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5238095238095238 [2024-01-27 16:00:22,436 INFO L175 Difference]: Start difference. First operand has 62 places, 62 transitions, 409 flow. Second operand 4 states and 44 transitions. [2024-01-27 16:00:22,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 69 transitions, 582 flow [2024-01-27 16:00:22,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 69 transitions, 532 flow, removed 15 selfloop flow, removed 2 redundant places. [2024-01-27 16:00:22,440 INFO L231 Difference]: Finished difference. Result has 60 places, 60 transitions, 390 flow [2024-01-27 16:00:22,440 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=340, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=390, PETRI_PLACES=60, PETRI_TRANSITIONS=60} [2024-01-27 16:00:22,440 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 38 predicate places. [2024-01-27 16:00:22,441 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 60 transitions, 390 flow [2024-01-27 16:00:22,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 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 16:00:22,441 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:00:22,441 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 16:00:22,445 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2024-01-27 16:00:22,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-01-27 16:00:22,645 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 16:00:22,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:00:22,645 INFO L85 PathProgramCache]: Analyzing trace with hash -1967407240, now seen corresponding path program 5 times [2024-01-27 16:00:22,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-01-27 16:00:22,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2024175880] [2024-01-27 16:00:22,645 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-01-27 16:00:22,645 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-01-27 16:00:22,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-01-27 16:00:22,647 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-01-27 16:00:22,648 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2024-01-27 16:00:22,758 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-01-27 16:00:22,758 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-27 16:00:22,762 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 20 conjunts are in the unsatisfiable core [2024-01-27 16:00:22,764 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 16:00:23,572 INFO L349 Elim1Store]: treesize reduction 876, result has 4.1 percent of original size [2024-01-27 16:00:23,574 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 6 disjoint index pairs (out of 120 index pairs), introduced 28 new quantified variables, introduced 120 case distinctions, treesize of input 2218 treesize of output 214 [2024-01-27 16:00:23,704 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 16:00:23,704 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-27 16:00:26,642 INFO L349 Elim1Store]: treesize reduction 891, result has 21.9 percent of original size [2024-01-27 16:00:26,642 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 28 new quantified variables, introduced 120 case distinctions, treesize of input 3997 treesize of output 476 [2024-01-27 16:04:01,446 WARN L293 SmtUtils]: Spent 15.04s on a formula simplification. DAG size of input: 4528 DAG size of output: 4529 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-01-27 16:07:06,427 WARN L293 SmtUtils]: Spent 36.11s on a formula simplification. DAG size of input: 7613 DAG size of output: 7614 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-01-27 16:10:30,192 WARN L293 SmtUtils]: Spent 14.84s on a formula simplification. DAG size of input: 5204 DAG size of output: 5187 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) Killed by 15