./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/parallel-misc-1.wvr.c --full-output --traceabstraction.positions.where.we.compute.the.hoare.annotation All --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 448d4d75 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/parallel-misc-1.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 c870162e8691a06e8bb6a8083be9eaf3f7ddc94357fb302a6e1fdd1b7aa873f8 --traceabstraction.positions.where.we.compute.the.hoare.annotation All --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.owicki-witnesses-448d4d7-m [2024-02-20 11:59:08,240 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-20 11:59:08,296 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-20 11:59:08,306 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-20 11:59:08,306 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-20 11:59:08,328 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-20 11:59:08,331 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-20 11:59:08,331 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-20 11:59:08,332 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-20 11:59:08,335 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-20 11:59:08,336 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-20 11:59:08,336 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-20 11:59:08,337 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-20 11:59:08,338 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-20 11:59:08,338 INFO L153 SettingsManager]: * Use SBE=true [2024-02-20 11:59:08,338 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-20 11:59:08,338 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-20 11:59:08,338 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-20 11:59:08,339 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-20 11:59:08,339 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-20 11:59:08,339 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-20 11:59:08,339 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-20 11:59:08,340 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-20 11:59:08,340 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-20 11:59:08,340 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-20 11:59:08,340 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-20 11:59:08,340 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-20 11:59:08,340 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-20 11:59:08,341 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-20 11:59:08,341 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-20 11:59:08,342 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-20 11:59:08,342 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-20 11:59:08,342 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-20 11:59:08,342 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-20 11:59:08,343 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-20 11:59:08,343 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-20 11:59:08,343 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-20 11:59:08,343 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-20 11:59:08,343 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-20 11:59:08,343 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-20 11:59:08,344 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-20 11:59:08,344 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-20 11:59:08,344 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-20 11:59:08,344 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c870162e8691a06e8bb6a8083be9eaf3f7ddc94357fb302a6e1fdd1b7aa873f8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All [2024-02-20 11:59:08,566 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-20 11:59:08,587 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-20 11:59:08,594 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-20 11:59:08,595 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-20 11:59:08,595 INFO L274 PluginConnector]: CDTParser initialized [2024-02-20 11:59:08,596 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-misc-1.wvr.c [2024-02-20 11:59:09,597 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-20 11:59:09,787 INFO L384 CDTParser]: Found 1 translation units. [2024-02-20 11:59:09,787 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-1.wvr.c [2024-02-20 11:59:09,793 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11a2b7731/cffb9fd42623411981debf303f7ac7c6/FLAG7469a24aa [2024-02-20 11:59:09,804 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11a2b7731/cffb9fd42623411981debf303f7ac7c6 [2024-02-20 11:59:09,807 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-20 11:59:09,808 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-02-20 11:59:09,811 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-20 11:59:09,812 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-20 11:59:09,816 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-20 11:59:09,816 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 11:59:09" (1/1) ... [2024-02-20 11:59:09,817 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c8cd80c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:59:09, skipping insertion in model container [2024-02-20 11:59:09,817 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 11:59:09" (1/1) ... [2024-02-20 11:59:09,839 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-02-20 11:59:10,044 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-1.wvr.c[2755,2768] [2024-02-20 11:59:10,060 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-20 11:59:10,071 INFO L202 MainTranslator]: Completed pre-run [2024-02-20 11:59:10,103 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-1.wvr.c[2755,2768] [2024-02-20 11:59:10,106 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-20 11:59:10,120 INFO L206 MainTranslator]: Completed translation [2024-02-20 11:59:10,120 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:59:10 WrapperNode [2024-02-20 11:59:10,120 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-20 11:59:10,121 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-20 11:59:10,121 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-20 11:59:10,122 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-20 11:59:10,127 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:59:10" (1/1) ... [2024-02-20 11:59:10,135 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:59:10" (1/1) ... [2024-02-20 11:59:10,180 INFO L138 Inliner]: procedures = 23, calls = 41, calls flagged for inlining = 17, calls inlined = 31, statements flattened = 287 [2024-02-20 11:59:10,180 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-20 11:59:10,181 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-20 11:59:10,181 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-20 11:59:10,181 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-20 11:59:10,191 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:59:10" (1/1) ... [2024-02-20 11:59:10,191 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:59:10" (1/1) ... [2024-02-20 11:59:10,206 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:59:10" (1/1) ... [2024-02-20 11:59:10,233 INFO L175 MemorySlicer]: Split 13 memory accesses to 4 slices as follows [2, 2, 7, 2]. 54 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]. [2024-02-20 11:59:10,234 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:59:10" (1/1) ... [2024-02-20 11:59:10,234 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:59:10" (1/1) ... [2024-02-20 11:59:10,241 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:59:10" (1/1) ... [2024-02-20 11:59:10,244 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:59:10" (1/1) ... [2024-02-20 11:59:10,246 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:59:10" (1/1) ... [2024-02-20 11:59:10,247 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:59:10" (1/1) ... [2024-02-20 11:59:10,251 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-20 11:59:10,251 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-20 11:59:10,252 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-20 11:59:10,252 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-20 11:59:10,252 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:59:10" (1/1) ... [2024-02-20 11:59:10,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-20 11:59:10,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:59:10,306 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) [2024-02-20 11:59:10,328 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 [2024-02-20 11:59:10,366 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-20 11:59:10,366 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-02-20 11:59:10,366 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-02-20 11:59:10,366 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-02-20 11:59:10,367 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-02-20 11:59:10,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-20 11:59:10,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-20 11:59:10,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-20 11:59:10,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-02-20 11:59:10,367 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-20 11:59:10,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-20 11:59:10,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-20 11:59:10,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-20 11:59:10,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-02-20 11:59:10,368 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-02-20 11:59:10,369 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-20 11:59:10,369 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-20 11:59:10,369 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-02-20 11:59:10,369 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-02-20 11:59:10,369 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-02-20 11:59:10,369 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-02-20 11:59:10,369 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-20 11:59:10,371 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-02-20 11:59:10,463 INFO L244 CfgBuilder]: Building ICFG [2024-02-20 11:59:10,466 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-20 11:59:10,867 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-20 11:59:10,867 INFO L293 CfgBuilder]: Performing block encoding [2024-02-20 11:59:11,182 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-20 11:59:11,183 INFO L320 CfgBuilder]: Removed 3 assume(true) statements. [2024-02-20 11:59:11,184 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 11:59:11 BoogieIcfgContainer [2024-02-20 11:59:11,184 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-20 11:59:11,185 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-20 11:59:11,186 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-20 11:59:11,188 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-20 11:59:11,188 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.02 11:59:09" (1/3) ... [2024-02-20 11:59:11,189 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f3ab77e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 11:59:11, skipping insertion in model container [2024-02-20 11:59:11,189 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:59:10" (2/3) ... [2024-02-20 11:59:11,190 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f3ab77e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 11:59:11, skipping insertion in model container [2024-02-20 11:59:11,191 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 11:59:11" (3/3) ... [2024-02-20 11:59:11,192 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-1.wvr.c [2024-02-20 11:59:11,206 INFO L221 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-20 11:59:11,207 INFO L180 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-02-20 11:59:11,207 INFO L635 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-20 11:59:11,239 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-02-20 11:59:11,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 23 places, 19 transitions, 52 flow [2024-02-20 11:59:11,298 INFO L124 PetriNetUnfolderBase]: 3/17 cut-off events. [2024-02-20 11:59:11,298 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-02-20 11:59:11,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26 conditions, 17 events. 3/17 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 6 event pairs, 0 based on Foata normal form. 0/13 useless extension candidates. Maximal degree in co-relation 9. Up to 2 conditions per place. [2024-02-20 11:59:11,302 INFO L82 GeneralOperation]: Start removeDead. Operand has 23 places, 19 transitions, 52 flow [2024-02-20 11:59:11,305 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 20 places, 16 transitions, 44 flow [2024-02-20 11:59:11,317 INFO L368 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-20 11:59:11,324 INFO L369 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=All, 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;@290de736, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-20 11:59:11,324 INFO L370 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-02-20 11:59:11,333 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-20 11:59:11,333 INFO L124 PetriNetUnfolderBase]: 3/15 cut-off events. [2024-02-20 11:59:11,333 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-02-20 11:59:11,334 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:59:11,334 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:59:11,335 INFO L432 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:59:11,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:59:11,339 INFO L85 PathProgramCache]: Analyzing trace with hash -953045001, now seen corresponding path program 1 times [2024-02-20 11:59:11,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:59:11,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220854127] [2024-02-20 11:59:11,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:59:11,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:59:11,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:59:11,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:59:11,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:59:11,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220854127] [2024-02-20 11:59:11,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220854127] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 11:59:11,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-20 11:59:11,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-20 11:59:11,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728273216] [2024-02-20 11:59:11,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:59:11,841 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-20 11:59:11,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:59:11,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-20 11:59:11,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-02-20 11:59:11,871 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 19 [2024-02-20 11:59:11,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 16 transitions, 44 flow. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 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) [2024-02-20 11:59:11,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:59:11,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 19 [2024-02-20 11:59:11,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:59:12,037 INFO L124 PetriNetUnfolderBase]: 70/120 cut-off events. [2024-02-20 11:59:12,038 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-02-20 11:59:12,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 262 conditions, 120 events. 70/120 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 286 event pairs, 9 based on Foata normal form. 1/80 useless extension candidates. Maximal degree in co-relation 190. Up to 69 conditions per place. [2024-02-20 11:59:12,043 INFO L140 encePairwiseOnDemand]: 13/19 looper letters, 28 selfloop transitions, 10 changer transitions 1/40 dead transitions. [2024-02-20 11:59:12,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 40 transitions, 185 flow [2024-02-20 11:59:12,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-20 11:59:12,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-20 11:59:12,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 55 transitions. [2024-02-20 11:59:12,054 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5789473684210527 [2024-02-20 11:59:12,057 INFO L308 CegarLoopForPetriNet]: 20 programPoint places, 4 predicate places. [2024-02-20 11:59:12,058 INFO L507 AbstractCegarLoop]: Abstraction has has 24 places, 40 transitions, 185 flow [2024-02-20 11:59:12,058 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 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) [2024-02-20 11:59:12,058 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:59:12,058 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:59:12,059 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-20 11:59:12,059 INFO L432 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:59:12,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:59:12,060 INFO L85 PathProgramCache]: Analyzing trace with hash -613929314, now seen corresponding path program 1 times [2024-02-20 11:59:12,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:59:12,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841369061] [2024-02-20 11:59:12,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:59:12,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:59:12,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:59:12,235 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:59:12,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:59:12,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841369061] [2024-02-20 11:59:12,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841369061] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 11:59:12,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-20 11:59:12,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-20 11:59:12,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120619882] [2024-02-20 11:59:12,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:59:12,237 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-20 11:59:12,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:59:12,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-20 11:59:12,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-20 11:59:12,240 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 19 [2024-02-20 11:59:12,240 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 40 transitions, 185 flow. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 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) [2024-02-20 11:59:12,240 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:59:12,240 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 19 [2024-02-20 11:59:12,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:59:12,345 INFO L124 PetriNetUnfolderBase]: 104/180 cut-off events. [2024-02-20 11:59:12,346 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2024-02-20 11:59:12,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 576 conditions, 180 events. 104/180 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 521 event pairs, 12 based on Foata normal form. 0/126 useless extension candidates. Maximal degree in co-relation 244. Up to 103 conditions per place. [2024-02-20 11:59:12,350 INFO L140 encePairwiseOnDemand]: 14/19 looper letters, 53 selfloop transitions, 7 changer transitions 4/65 dead transitions. [2024-02-20 11:59:12,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 65 transitions, 431 flow [2024-02-20 11:59:12,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-20 11:59:12,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-20 11:59:12,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 39 transitions. [2024-02-20 11:59:12,352 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5131578947368421 [2024-02-20 11:59:12,353 INFO L308 CegarLoopForPetriNet]: 20 programPoint places, 7 predicate places. [2024-02-20 11:59:12,353 INFO L507 AbstractCegarLoop]: Abstraction has has 27 places, 65 transitions, 431 flow [2024-02-20 11:59:12,353 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 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) [2024-02-20 11:59:12,353 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:59:12,354 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:59:12,354 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-20 11:59:12,355 INFO L432 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:59:12,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:59:12,355 INFO L85 PathProgramCache]: Analyzing trace with hash -1540155760, now seen corresponding path program 1 times [2024-02-20 11:59:12,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:59:12,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246911870] [2024-02-20 11:59:12,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:59:12,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:59:12,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:59:12,505 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:59:12,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:59:12,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246911870] [2024-02-20 11:59:12,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246911870] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 11:59:12,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-20 11:59:12,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-20 11:59:12,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144272867] [2024-02-20 11:59:12,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:59:12,506 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-20 11:59:12,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:59:12,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-20 11:59:12,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-20 11:59:12,507 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 19 [2024-02-20 11:59:12,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 65 transitions, 431 flow. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 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) [2024-02-20 11:59:12,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:59:12,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 19 [2024-02-20 11:59:12,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:59:12,572 INFO L124 PetriNetUnfolderBase]: 80/144 cut-off events. [2024-02-20 11:59:12,573 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-02-20 11:59:12,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 605 conditions, 144 events. 80/144 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 388 event pairs, 9 based on Foata normal form. 0/102 useless extension candidates. Maximal degree in co-relation 366. Up to 89 conditions per place. [2024-02-20 11:59:12,574 INFO L140 encePairwiseOnDemand]: 14/19 looper letters, 54 selfloop transitions, 8 changer transitions 12/75 dead transitions. [2024-02-20 11:59:12,574 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 75 transitions, 639 flow [2024-02-20 11:59:12,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-20 11:59:12,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-20 11:59:12,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 37 transitions. [2024-02-20 11:59:12,575 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4868421052631579 [2024-02-20 11:59:12,576 INFO L308 CegarLoopForPetriNet]: 20 programPoint places, 10 predicate places. [2024-02-20 11:59:12,576 INFO L507 AbstractCegarLoop]: Abstraction has has 30 places, 75 transitions, 639 flow [2024-02-20 11:59:12,576 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 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) [2024-02-20 11:59:12,577 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:59:12,577 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:59:12,577 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-02-20 11:59:12,577 INFO L432 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:59:12,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:59:12,577 INFO L85 PathProgramCache]: Analyzing trace with hash 458101518, now seen corresponding path program 1 times [2024-02-20 11:59:12,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:59:12,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395546115] [2024-02-20 11:59:12,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:59:12,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:59:12,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:59:12,657 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-20 11:59:12,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:59:12,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395546115] [2024-02-20 11:59:12,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395546115] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:59:12,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1307761635] [2024-02-20 11:59:12,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:59:12,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:59:12,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:59:12,664 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) [2024-02-20 11:59:12,698 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-02-20 11:59:12,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:59:12,778 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 6 conjunts are in the unsatisfiable core [2024-02-20 11:59:12,782 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:59:12,881 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-20 11:59:12,881 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:59:12,924 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-20 11:59:12,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1307761635] provided 1 perfect and 1 imperfect interpolant sequences [2024-02-20 11:59:12,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-02-20 11:59:12,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2024-02-20 11:59:12,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389568524] [2024-02-20 11:59:12,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:59:12,926 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-20 11:59:12,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:59:12,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-20 11:59:12,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-02-20 11:59:12,928 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 19 [2024-02-20 11:59:12,929 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 75 transitions, 639 flow. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 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) [2024-02-20 11:59:12,929 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:59:12,929 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 19 [2024-02-20 11:59:12,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:59:13,035 INFO L124 PetriNetUnfolderBase]: 71/131 cut-off events. [2024-02-20 11:59:13,035 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2024-02-20 11:59:13,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 680 conditions, 131 events. 71/131 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 338 event pairs, 9 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 448. Up to 81 conditions per place. [2024-02-20 11:59:13,038 INFO L140 encePairwiseOnDemand]: 14/19 looper letters, 52 selfloop transitions, 8 changer transitions 10/71 dead transitions. [2024-02-20 11:59:13,039 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 71 transitions, 738 flow [2024-02-20 11:59:13,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-20 11:59:13,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-20 11:59:13,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 48 transitions. [2024-02-20 11:59:13,040 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5052631578947369 [2024-02-20 11:59:13,042 INFO L308 CegarLoopForPetriNet]: 20 programPoint places, 14 predicate places. [2024-02-20 11:59:13,042 INFO L507 AbstractCegarLoop]: Abstraction has has 34 places, 71 transitions, 738 flow [2024-02-20 11:59:13,043 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 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) [2024-02-20 11:59:13,043 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:59:13,043 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:59:13,062 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-02-20 11:59:13,262 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:59:13,263 INFO L432 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:59:13,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:59:13,263 INFO L85 PathProgramCache]: Analyzing trace with hash -73125724, now seen corresponding path program 1 times [2024-02-20 11:59:13,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:59:13,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389184217] [2024-02-20 11:59:13,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:59:13,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:59:13,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:59:13,396 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-20 11:59:13,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:59:13,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389184217] [2024-02-20 11:59:13,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389184217] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:59:13,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [155764068] [2024-02-20 11:59:13,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:59:13,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:59:13,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:59:13,413 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) [2024-02-20 11:59:13,424 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-02-20 11:59:13,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:59:13,533 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 6 conjunts are in the unsatisfiable core [2024-02-20 11:59:13,535 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:59:13,611 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-20 11:59:13,612 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:59:13,658 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-20 11:59:13,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [155764068] provided 1 perfect and 1 imperfect interpolant sequences [2024-02-20 11:59:13,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-02-20 11:59:13,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2024-02-20 11:59:13,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100463344] [2024-02-20 11:59:13,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:59:13,660 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-20 11:59:13,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:59:13,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-20 11:59:13,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-02-20 11:59:13,661 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 19 [2024-02-20 11:59:13,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 71 transitions, 738 flow. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 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) [2024-02-20 11:59:13,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:59:13,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 19 [2024-02-20 11:59:13,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:59:13,750 INFO L124 PetriNetUnfolderBase]: 71/133 cut-off events. [2024-02-20 11:59:13,751 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2024-02-20 11:59:13,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 824 conditions, 133 events. 71/133 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 345 event pairs, 9 based on Foata normal form. 0/105 useless extension candidates. Maximal degree in co-relation 524. Up to 88 conditions per place. [2024-02-20 11:59:13,756 INFO L140 encePairwiseOnDemand]: 14/19 looper letters, 54 selfloop transitions, 7 changer transitions 10/72 dead transitions. [2024-02-20 11:59:13,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 72 transitions, 893 flow [2024-02-20 11:59:13,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-20 11:59:13,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-20 11:59:13,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 48 transitions. [2024-02-20 11:59:13,758 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5052631578947369 [2024-02-20 11:59:13,760 INFO L308 CegarLoopForPetriNet]: 20 programPoint places, 18 predicate places. [2024-02-20 11:59:13,760 INFO L507 AbstractCegarLoop]: Abstraction has has 38 places, 72 transitions, 893 flow [2024-02-20 11:59:13,760 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 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) [2024-02-20 11:59:13,760 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:59:13,760 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:59:13,778 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-02-20 11:59:13,976 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:59:13,977 INFO L432 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:59:13,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:59:13,977 INFO L85 PathProgramCache]: Analyzing trace with hash 2028796781, now seen corresponding path program 1 times [2024-02-20 11:59:13,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:59:13,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395311269] [2024-02-20 11:59:13,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:59:13,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:59:14,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:59:14,827 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:59:14,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:59:14,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395311269] [2024-02-20 11:59:14,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395311269] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:59:14,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [95141955] [2024-02-20 11:59:14,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:59:14,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:59:14,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:59:14,829 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) [2024-02-20 11:59:14,854 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-02-20 11:59:14,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:59:14,922 INFO L262 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 24 conjunts are in the unsatisfiable core [2024-02-20 11:59:14,925 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:59:14,957 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 [2024-02-20 11:59:15,122 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 87 treesize of output 59 [2024-02-20 11:59:15,144 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:59:15,144 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:59:15,763 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-20 11:59:15,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [95141955] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 11:59:15,764 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 11:59:15,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2024-02-20 11:59:15,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463411564] [2024-02-20 11:59:15,764 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 11:59:15,764 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-02-20 11:59:15,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:59:15,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-02-20 11:59:15,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2024-02-20 11:59:15,766 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 19 [2024-02-20 11:59:15,766 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 72 transitions, 893 flow. Second operand has 17 states, 17 states have (on average 5.352941176470588) internal successors, (91), 17 states have internal predecessors, (91), 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) [2024-02-20 11:59:15,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:59:15,766 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 19 [2024-02-20 11:59:15,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:59:16,040 INFO L124 PetriNetUnfolderBase]: 98/191 cut-off events. [2024-02-20 11:59:16,041 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2024-02-20 11:59:16,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1378 conditions, 191 events. 98/191 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 592 event pairs, 9 based on Foata normal form. 1/155 useless extension candidates. Maximal degree in co-relation 713. Up to 137 conditions per place. [2024-02-20 11:59:16,042 INFO L140 encePairwiseOnDemand]: 11/19 looper letters, 66 selfloop transitions, 25 changer transitions 15/107 dead transitions. [2024-02-20 11:59:16,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 107 transitions, 1555 flow [2024-02-20 11:59:16,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-02-20 11:59:16,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-02-20 11:59:16,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 109 transitions. [2024-02-20 11:59:16,044 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4780701754385965 [2024-02-20 11:59:16,044 INFO L308 CegarLoopForPetriNet]: 20 programPoint places, 29 predicate places. [2024-02-20 11:59:16,044 INFO L507 AbstractCegarLoop]: Abstraction has has 49 places, 107 transitions, 1555 flow [2024-02-20 11:59:16,045 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.352941176470588) internal successors, (91), 17 states have internal predecessors, (91), 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) [2024-02-20 11:59:16,045 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:59:16,045 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:59:16,068 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-02-20 11:59:16,256 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:59:16,259 INFO L432 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:59:16,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:59:16,259 INFO L85 PathProgramCache]: Analyzing trace with hash -2043610613, now seen corresponding path program 2 times [2024-02-20 11:59:16,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:59:16,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313175108] [2024-02-20 11:59:16,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:59:16,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:59:16,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:59:16,939 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:59:16,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:59:16,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313175108] [2024-02-20 11:59:16,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313175108] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:59:16,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [411845472] [2024-02-20 11:59:16,940 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-20 11:59:16,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:59:16,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:59:16,941 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) [2024-02-20 11:59:16,960 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-02-20 11:59:17,031 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-20 11:59:17,031 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:59:17,033 INFO L262 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 29 conjunts are in the unsatisfiable core [2024-02-20 11:59:17,035 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:59:17,046 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 [2024-02-20 11:59:17,156 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 87 treesize of output 59 [2024-02-20 11:59:17,209 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:59:17,209 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:59:17,866 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-20 11:59:17,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [411845472] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 11:59:17,867 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 11:59:17,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2024-02-20 11:59:17,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721454636] [2024-02-20 11:59:17,868 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 11:59:17,868 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-02-20 11:59:17,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:59:17,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-02-20 11:59:17,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2024-02-20 11:59:17,869 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 19 [2024-02-20 11:59:17,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 107 transitions, 1555 flow. Second operand has 18 states, 18 states have (on average 5.055555555555555) internal successors, (91), 18 states have internal predecessors, (91), 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) [2024-02-20 11:59:17,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:59:17,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 19 [2024-02-20 11:59:17,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:59:18,468 INFO L124 PetriNetUnfolderBase]: 139/257 cut-off events. [2024-02-20 11:59:18,468 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2024-02-20 11:59:18,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2099 conditions, 257 events. 139/257 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 869 event pairs, 9 based on Foata normal form. 1/199 useless extension candidates. Maximal degree in co-relation 1335. Up to 196 conditions per place. [2024-02-20 11:59:18,471 INFO L140 encePairwiseOnDemand]: 11/19 looper letters, 80 selfloop transitions, 45 changer transitions 21/147 dead transitions. [2024-02-20 11:59:18,471 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 147 transitions, 2413 flow [2024-02-20 11:59:18,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-02-20 11:59:18,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-02-20 11:59:18,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 144 transitions. [2024-02-20 11:59:18,474 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.42105263157894735 [2024-02-20 11:59:18,474 INFO L308 CegarLoopForPetriNet]: 20 programPoint places, 46 predicate places. [2024-02-20 11:59:18,474 INFO L507 AbstractCegarLoop]: Abstraction has has 66 places, 147 transitions, 2413 flow [2024-02-20 11:59:18,475 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.055555555555555) internal successors, (91), 18 states have internal predecessors, (91), 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) [2024-02-20 11:59:18,475 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:59:18,475 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:59:18,490 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-02-20 11:59:18,687 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:59:18,688 INFO L432 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:59:18,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:59:18,688 INFO L85 PathProgramCache]: Analyzing trace with hash 688222913, now seen corresponding path program 3 times [2024-02-20 11:59:18,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:59:18,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682699578] [2024-02-20 11:59:18,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:59:18,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:59:18,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:59:19,409 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:59:19,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:59:19,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682699578] [2024-02-20 11:59:19,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682699578] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:59:19,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1136949853] [2024-02-20 11:59:19,412 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-02-20 11:59:19,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:59:19,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:59:19,413 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) [2024-02-20 11:59:19,436 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-02-20 11:59:19,502 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-02-20 11:59:19,503 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:59:19,504 INFO L262 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 24 conjunts are in the unsatisfiable core [2024-02-20 11:59:19,507 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:59:19,663 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 87 treesize of output 59 [2024-02-20 11:59:19,712 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:59:19,712 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:59:19,885 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-20 11:59:19,885 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 200 treesize of output 144 [2024-02-20 11:59:20,101 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-20 11:59:20,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1136949853] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 11:59:20,101 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 11:59:20,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2024-02-20 11:59:20,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246521014] [2024-02-20 11:59:20,101 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 11:59:20,102 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-02-20 11:59:20,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:59:20,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-02-20 11:59:20,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2024-02-20 11:59:20,102 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 19 [2024-02-20 11:59:20,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 147 transitions, 2413 flow. Second operand has 18 states, 18 states have (on average 5.111111111111111) internal successors, (92), 18 states have internal predecessors, (92), 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) [2024-02-20 11:59:20,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:59:20,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 19 [2024-02-20 11:59:20,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:59:20,448 INFO L124 PetriNetUnfolderBase]: 145/272 cut-off events. [2024-02-20 11:59:20,449 INFO L125 PetriNetUnfolderBase]: For 32/32 co-relation queries the response was YES. [2024-02-20 11:59:20,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2494 conditions, 272 events. 145/272 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 947 event pairs, 9 based on Foata normal form. 1/210 useless extension candidates. Maximal degree in co-relation 1629. Up to 211 conditions per place. [2024-02-20 11:59:20,452 INFO L140 encePairwiseOnDemand]: 11/19 looper letters, 103 selfloop transitions, 26 changer transitions 26/156 dead transitions. [2024-02-20 11:59:20,452 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 156 transitions, 2876 flow [2024-02-20 11:59:20,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-02-20 11:59:20,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-02-20 11:59:20,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 101 transitions. [2024-02-20 11:59:20,455 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4089068825910931 [2024-02-20 11:59:20,456 INFO L308 CegarLoopForPetriNet]: 20 programPoint places, 58 predicate places. [2024-02-20 11:59:20,456 INFO L507 AbstractCegarLoop]: Abstraction has has 78 places, 156 transitions, 2876 flow [2024-02-20 11:59:20,457 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.111111111111111) internal successors, (92), 18 states have internal predecessors, (92), 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) [2024-02-20 11:59:20,457 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:59:20,457 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:59:20,474 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-02-20 11:59:20,668 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:59:20,668 INFO L432 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:59:20,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:59:20,669 INFO L85 PathProgramCache]: Analyzing trace with hash -554205617, now seen corresponding path program 4 times [2024-02-20 11:59:20,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:59:20,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905175826] [2024-02-20 11:59:20,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:59:20,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:59:20,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:59:21,098 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:59:21,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:59:21,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905175826] [2024-02-20 11:59:21,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905175826] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:59:21,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [936761755] [2024-02-20 11:59:21,099 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-02-20 11:59:21,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:59:21,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:59:21,101 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) [2024-02-20 11:59:21,123 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-02-20 11:59:21,188 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-02-20 11:59:21,188 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:59:21,190 INFO L262 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 24 conjunts are in the unsatisfiable core [2024-02-20 11:59:21,192 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:59:21,202 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 [2024-02-20 11:59:21,346 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 69 treesize of output 49 [2024-02-20 11:59:21,390 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:59:21,391 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:59:21,895 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-20 11:59:21,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [936761755] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 11:59:21,895 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 11:59:21,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 16 [2024-02-20 11:59:21,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603307603] [2024-02-20 11:59:21,895 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 11:59:21,896 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-02-20 11:59:21,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:59:21,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-02-20 11:59:21,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2024-02-20 11:59:21,896 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 19 [2024-02-20 11:59:21,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 156 transitions, 2876 flow. Second operand has 16 states, 16 states have (on average 5.1875) internal successors, (83), 16 states have internal predecessors, (83), 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) [2024-02-20 11:59:21,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:59:21,897 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 19 [2024-02-20 11:59:21,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:59:22,117 INFO L124 PetriNetUnfolderBase]: 152/288 cut-off events. [2024-02-20 11:59:22,117 INFO L125 PetriNetUnfolderBase]: For 32/32 co-relation queries the response was YES. [2024-02-20 11:59:22,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2928 conditions, 288 events. 152/288 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1037 event pairs, 9 based on Foata normal form. 1/222 useless extension candidates. Maximal degree in co-relation 1890. Up to 226 conditions per place. [2024-02-20 11:59:22,120 INFO L140 encePairwiseOnDemand]: 11/19 looper letters, 109 selfloop transitions, 26 changer transitions 31/167 dead transitions. [2024-02-20 11:59:22,120 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 167 transitions, 3412 flow [2024-02-20 11:59:22,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-02-20 11:59:22,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-02-20 11:59:22,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 94 transitions. [2024-02-20 11:59:22,122 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.44976076555023925 [2024-02-20 11:59:22,122 INFO L308 CegarLoopForPetriNet]: 20 programPoint places, 68 predicate places. [2024-02-20 11:59:22,122 INFO L507 AbstractCegarLoop]: Abstraction has has 88 places, 167 transitions, 3412 flow [2024-02-20 11:59:22,123 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.1875) internal successors, (83), 16 states have internal predecessors, (83), 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) [2024-02-20 11:59:22,123 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:59:22,123 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:59:22,138 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-02-20 11:59:22,334 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:59:22,337 INFO L432 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:59:22,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:59:22,337 INFO L85 PathProgramCache]: Analyzing trace with hash 301101037, now seen corresponding path program 5 times [2024-02-20 11:59:22,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:59:22,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802649537] [2024-02-20 11:59:22,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:59:22,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:59:22,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:59:22,697 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:59:22,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:59:22,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802649537] [2024-02-20 11:59:22,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802649537] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:59:22,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [861830304] [2024-02-20 11:59:22,698 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-02-20 11:59:22,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:59:22,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:59:22,699 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 11:59:22,722 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-02-20 11:59:22,776 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-20 11:59:22,776 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:59:22,777 INFO L262 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 29 conjunts are in the unsatisfiable core [2024-02-20 11:59:22,779 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:59:22,796 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 [2024-02-20 11:59:22,941 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 69 treesize of output 49 [2024-02-20 11:59:22,958 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:59:22,958 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:59:23,470 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-20 11:59:23,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [861830304] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 11:59:23,470 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 11:59:23,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2024-02-20 11:59:23,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713825735] [2024-02-20 11:59:23,471 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 11:59:23,471 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-02-20 11:59:23,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:59:23,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-02-20 11:59:23,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2024-02-20 11:59:23,472 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 19 [2024-02-20 11:59:23,472 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 167 transitions, 3412 flow. Second operand has 18 states, 18 states have (on average 5.0) internal successors, (90), 18 states have internal predecessors, (90), 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) [2024-02-20 11:59:23,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:59:23,472 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 19 [2024-02-20 11:59:23,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:59:23,874 INFO L124 PetriNetUnfolderBase]: 151/299 cut-off events. [2024-02-20 11:59:23,874 INFO L125 PetriNetUnfolderBase]: For 39/39 co-relation queries the response was YES. [2024-02-20 11:59:23,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3341 conditions, 299 events. 151/299 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1175 event pairs, 3 based on Foata normal form. 1/233 useless extension candidates. Maximal degree in co-relation 2112. Up to 233 conditions per place. [2024-02-20 11:59:23,878 INFO L140 encePairwiseOnDemand]: 11/19 looper letters, 108 selfloop transitions, 28 changer transitions 44/181 dead transitions. [2024-02-20 11:59:23,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 181 transitions, 4067 flow [2024-02-20 11:59:23,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-02-20 11:59:23,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-02-20 11:59:23,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 125 transitions. [2024-02-20 11:59:23,879 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.41118421052631576 [2024-02-20 11:59:23,879 INFO L308 CegarLoopForPetriNet]: 20 programPoint places, 83 predicate places. [2024-02-20 11:59:23,879 INFO L507 AbstractCegarLoop]: Abstraction has has 103 places, 181 transitions, 4067 flow [2024-02-20 11:59:23,880 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.0) internal successors, (90), 18 states have internal predecessors, (90), 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) [2024-02-20 11:59:23,880 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:59:23,880 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:59:23,891 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-02-20 11:59:24,091 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:59:24,091 INFO L432 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:59:24,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:59:24,092 INFO L85 PathProgramCache]: Analyzing trace with hash -2117339387, now seen corresponding path program 6 times [2024-02-20 11:59:24,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:59:24,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196338493] [2024-02-20 11:59:24,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:59:24,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:59:24,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:59:24,531 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:59:24,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:59:24,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196338493] [2024-02-20 11:59:24,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196338493] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:59:24,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1017146309] [2024-02-20 11:59:24,534 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-02-20 11:59:24,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:59:24,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:59:24,535 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 11:59:24,556 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-02-20 11:59:24,611 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-02-20 11:59:24,611 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:59:24,613 INFO L262 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 26 conjunts are in the unsatisfiable core [2024-02-20 11:59:24,615 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:59:24,790 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 69 treesize of output 49 [2024-02-20 11:59:24,864 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:59:24,865 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:59:25,060 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-20 11:59:25,064 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 214 treesize of output 142 [2024-02-20 11:59:25,313 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-20 11:59:25,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1017146309] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 11:59:25,314 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 11:59:25,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 19 [2024-02-20 11:59:25,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245778656] [2024-02-20 11:59:25,314 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 11:59:25,314 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-02-20 11:59:25,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:59:25,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-02-20 11:59:25,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2024-02-20 11:59:25,315 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 19 [2024-02-20 11:59:25,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 181 transitions, 4067 flow. Second operand has 19 states, 19 states have (on average 5.157894736842105) internal successors, (98), 19 states have internal predecessors, (98), 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) [2024-02-20 11:59:25,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:59:25,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 19 [2024-02-20 11:59:25,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:59:26,618 INFO L124 PetriNetUnfolderBase]: 392/704 cut-off events. [2024-02-20 11:59:26,618 INFO L125 PetriNetUnfolderBase]: For 90/90 co-relation queries the response was YES. [2024-02-20 11:59:26,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8504 conditions, 704 events. 392/704 cut-off events. For 90/90 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3187 event pairs, 3 based on Foata normal form. 4/503 useless extension candidates. Maximal degree in co-relation 5404. Up to 634 conditions per place. [2024-02-20 11:59:26,626 INFO L140 encePairwiseOnDemand]: 11/19 looper letters, 196 selfloop transitions, 133 changer transitions 75/405 dead transitions. [2024-02-20 11:59:26,626 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 405 transitions, 9905 flow [2024-02-20 11:59:26,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-02-20 11:59:26,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2024-02-20 11:59:26,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 302 transitions. [2024-02-20 11:59:26,628 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4674922600619195 [2024-02-20 11:59:26,628 INFO L308 CegarLoopForPetriNet]: 20 programPoint places, 116 predicate places. [2024-02-20 11:59:26,628 INFO L507 AbstractCegarLoop]: Abstraction has has 136 places, 405 transitions, 9905 flow [2024-02-20 11:59:26,629 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.157894736842105) internal successors, (98), 19 states have internal predecessors, (98), 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) [2024-02-20 11:59:26,629 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:59:26,629 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:59:26,643 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-02-20 11:59:26,837 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-02-20 11:59:26,837 INFO L432 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:59:26,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:59:26,838 INFO L85 PathProgramCache]: Analyzing trace with hash -819257618, now seen corresponding path program 7 times [2024-02-20 11:59:26,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:59:26,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119855242] [2024-02-20 11:59:26,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:59:26,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:59:26,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:59:26,935 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-20 11:59:26,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:59:26,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119855242] [2024-02-20 11:59:26,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119855242] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:59:26,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [813765075] [2024-02-20 11:59:26,936 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-02-20 11:59:26,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:59:26,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:59:26,937 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 11:59:26,939 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-02-20 11:59:27,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:59:27,020 INFO L262 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 8 conjunts are in the unsatisfiable core [2024-02-20 11:59:27,023 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:59:27,065 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-20 11:59:27,065 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:59:27,098 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-20 11:59:27,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [813765075] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 11:59:27,099 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 11:59:27,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-02-20 11:59:27,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504606394] [2024-02-20 11:59:27,100 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 11:59:27,100 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-02-20 11:59:27,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:59:27,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-02-20 11:59:27,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-02-20 11:59:27,101 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 19 [2024-02-20 11:59:27,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 405 transitions, 9905 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) [2024-02-20 11:59:27,102 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:59:27,102 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 19 [2024-02-20 11:59:27,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:59:27,322 INFO L124 PetriNetUnfolderBase]: 310/622 cut-off events. [2024-02-20 11:59:27,322 INFO L125 PetriNetUnfolderBase]: For 108/108 co-relation queries the response was YES. [2024-02-20 11:59:27,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8140 conditions, 622 events. 310/622 cut-off events. For 108/108 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3125 event pairs, 3 based on Foata normal form. 0/473 useless extension candidates. Maximal degree in co-relation 3649. Up to 552 conditions per place. [2024-02-20 11:59:27,331 INFO L140 encePairwiseOnDemand]: 14/19 looper letters, 243 selfloop transitions, 20 changer transitions 107/371 dead transitions. [2024-02-20 11:59:27,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 371 transitions, 9841 flow [2024-02-20 11:59:27,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-20 11:59:27,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-20 11:59:27,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 75 transitions. [2024-02-20 11:59:27,333 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4934210526315789 [2024-02-20 11:59:27,333 INFO L308 CegarLoopForPetriNet]: 20 programPoint places, 116 predicate places. [2024-02-20 11:59:27,334 INFO L507 AbstractCegarLoop]: Abstraction has has 136 places, 371 transitions, 9841 flow [2024-02-20 11:59:27,334 INFO L508 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) [2024-02-20 11:59:27,334 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:59:27,334 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:59:27,363 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-02-20 11:59:27,548 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:59:27,548 INFO L432 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:59:27,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:59:27,549 INFO L85 PathProgramCache]: Analyzing trace with hash -1531082300, now seen corresponding path program 8 times [2024-02-20 11:59:27,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:59:27,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361974395] [2024-02-20 11:59:27,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:59:27,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:59:27,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:59:27,623 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-20 11:59:27,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:59:27,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361974395] [2024-02-20 11:59:27,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361974395] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:59:27,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1957771280] [2024-02-20 11:59:27,623 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-20 11:59:27,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:59:27,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:59:27,624 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 11:59:27,632 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-02-20 11:59:27,704 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-20 11:59:27,704 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:59:27,705 INFO L262 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 14 conjunts are in the unsatisfiable core [2024-02-20 11:59:27,706 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:59:27,772 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:59:27,773 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:59:27,810 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-20 11:59:27,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1957771280] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 11:59:27,810 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 11:59:27,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 6] total 14 [2024-02-20 11:59:27,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861518397] [2024-02-20 11:59:27,811 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 11:59:27,811 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-02-20 11:59:27,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:59:27,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-02-20 11:59:27,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2024-02-20 11:59:27,812 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 19 [2024-02-20 11:59:27,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 371 transitions, 9841 flow. Second operand has 14 states, 14 states have (on average 5.714285714285714) internal successors, (80), 14 states have internal predecessors, (80), 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) [2024-02-20 11:59:27,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:59:27,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 19 [2024-02-20 11:59:27,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:59:28,035 INFO L124 PetriNetUnfolderBase]: 217/461 cut-off events. [2024-02-20 11:59:28,035 INFO L125 PetriNetUnfolderBase]: For 83/83 co-relation queries the response was YES. [2024-02-20 11:59:28,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6518 conditions, 461 events. 217/461 cut-off events. For 83/83 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2239 event pairs, 3 based on Foata normal form. 0/368 useless extension candidates. Maximal degree in co-relation 4093. Up to 393 conditions per place. [2024-02-20 11:59:28,042 INFO L140 encePairwiseOnDemand]: 12/19 looper letters, 114 selfloop transitions, 38 changer transitions 131/284 dead transitions. [2024-02-20 11:59:28,042 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 284 transitions, 8106 flow [2024-02-20 11:59:28,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-02-20 11:59:28,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-02-20 11:59:28,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 103 transitions. [2024-02-20 11:59:28,043 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.49282296650717705 [2024-02-20 11:59:28,044 INFO L308 CegarLoopForPetriNet]: 20 programPoint places, 124 predicate places. [2024-02-20 11:59:28,044 INFO L507 AbstractCegarLoop]: Abstraction has has 144 places, 284 transitions, 8106 flow [2024-02-20 11:59:28,044 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.714285714285714) internal successors, (80), 14 states have internal predecessors, (80), 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) [2024-02-20 11:59:28,044 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:59:28,044 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:59:28,063 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-02-20 11:59:28,256 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-02-20 11:59:28,257 INFO L432 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:59:28,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:59:28,257 INFO L85 PathProgramCache]: Analyzing trace with hash -794805798, now seen corresponding path program 9 times [2024-02-20 11:59:28,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:59:28,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385798042] [2024-02-20 11:59:28,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:59:28,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:59:28,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:59:28,355 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-20 11:59:28,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:59:28,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385798042] [2024-02-20 11:59:28,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385798042] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:59:28,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [290487863] [2024-02-20 11:59:28,355 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-02-20 11:59:28,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:59:28,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:59:28,356 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 11:59:28,379 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-02-20 11:59:28,443 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-02-20 11:59:28,443 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:59:28,444 INFO L262 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 8 conjunts are in the unsatisfiable core [2024-02-20 11:59:28,445 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:59:28,497 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-20 11:59:28,497 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:59:28,541 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-20 11:59:28,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [290487863] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 11:59:28,541 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 11:59:28,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-02-20 11:59:28,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153589085] [2024-02-20 11:59:28,541 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 11:59:28,542 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-02-20 11:59:28,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:59:28,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-02-20 11:59:28,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-02-20 11:59:28,543 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 19 [2024-02-20 11:59:28,544 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 284 transitions, 8106 flow. Second operand has 14 states, 14 states have (on average 5.428571428571429) internal successors, (76), 14 states have internal predecessors, (76), 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) [2024-02-20 11:59:28,544 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:59:28,544 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 19 [2024-02-20 11:59:28,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:59:28,698 INFO L124 PetriNetUnfolderBase]: 195/416 cut-off events. [2024-02-20 11:59:28,698 INFO L125 PetriNetUnfolderBase]: For 71/71 co-relation queries the response was YES. [2024-02-20 11:59:28,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6295 conditions, 416 events. 195/416 cut-off events. For 71/71 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 1930 event pairs, 3 based on Foata normal form. 4/355 useless extension candidates. Maximal degree in co-relation 3781. Up to 348 conditions per place. [2024-02-20 11:59:28,703 INFO L140 encePairwiseOnDemand]: 14/19 looper letters, 130 selfloop transitions, 20 changer transitions 104/255 dead transitions. [2024-02-20 11:59:28,704 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 255 transitions, 7778 flow [2024-02-20 11:59:28,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-20 11:59:28,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-20 11:59:28,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 67 transitions. [2024-02-20 11:59:28,704 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4407894736842105 [2024-02-20 11:59:28,705 INFO L308 CegarLoopForPetriNet]: 20 programPoint places, 129 predicate places. [2024-02-20 11:59:28,705 INFO L507 AbstractCegarLoop]: Abstraction has has 149 places, 255 transitions, 7778 flow [2024-02-20 11:59:28,705 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.428571428571429) internal successors, (76), 14 states have internal predecessors, (76), 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) [2024-02-20 11:59:28,705 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:59:28,705 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:59:28,719 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-02-20 11:59:28,917 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-02-20 11:59:28,917 INFO L432 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:59:28,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:59:28,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1455321296, now seen corresponding path program 10 times [2024-02-20 11:59:28,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:59:28,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841158444] [2024-02-20 11:59:28,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:59:28,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:59:28,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:59:29,040 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-20 11:59:29,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:59:29,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841158444] [2024-02-20 11:59:29,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841158444] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:59:29,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1467425709] [2024-02-20 11:59:29,041 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-02-20 11:59:29,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:59:29,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:59:29,042 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 11:59:29,043 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-02-20 11:59:29,139 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-02-20 11:59:29,139 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:59:29,140 INFO L262 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 8 conjunts are in the unsatisfiable core [2024-02-20 11:59:29,143 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:59:29,202 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-20 11:59:29,202 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:59:29,265 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-20 11:59:29,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1467425709] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 11:59:29,266 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 11:59:29,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-02-20 11:59:29,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198953746] [2024-02-20 11:59:29,266 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 11:59:29,266 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-02-20 11:59:29,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:59:29,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-02-20 11:59:29,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2024-02-20 11:59:29,268 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 19 [2024-02-20 11:59:29,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 255 transitions, 7778 flow. Second operand has 14 states, 14 states have (on average 5.214285714285714) internal successors, (73), 14 states have internal predecessors, (73), 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) [2024-02-20 11:59:29,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:59:29,268 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 19 [2024-02-20 11:59:29,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:59:29,467 INFO L124 PetriNetUnfolderBase]: 167/366 cut-off events. [2024-02-20 11:59:29,468 INFO L125 PetriNetUnfolderBase]: For 58/58 co-relation queries the response was YES. [2024-02-20 11:59:29,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5902 conditions, 366 events. 167/366 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1612 event pairs, 3 based on Foata normal form. 0/317 useless extension candidates. Maximal degree in co-relation 3290. Up to 298 conditions per place. [2024-02-20 11:59:29,473 INFO L140 encePairwiseOnDemand]: 14/19 looper letters, 115 selfloop transitions, 18 changer transitions 94/228 dead transitions. [2024-02-20 11:59:29,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 228 transitions, 7401 flow [2024-02-20 11:59:29,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-20 11:59:29,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-20 11:59:29,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 67 transitions. [2024-02-20 11:59:29,474 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4407894736842105 [2024-02-20 11:59:29,474 INFO L308 CegarLoopForPetriNet]: 20 programPoint places, 134 predicate places. [2024-02-20 11:59:29,475 INFO L507 AbstractCegarLoop]: Abstraction has has 154 places, 228 transitions, 7401 flow [2024-02-20 11:59:29,475 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.214285714285714) internal successors, (73), 14 states have internal predecessors, (73), 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) [2024-02-20 11:59:29,475 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:59:29,475 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:59:29,487 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-02-20 11:59:29,687 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-02-20 11:59:29,687 INFO L432 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:59:29,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:59:29,688 INFO L85 PathProgramCache]: Analyzing trace with hash 1131550967, now seen corresponding path program 11 times [2024-02-20 11:59:29,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:59:29,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804658851] [2024-02-20 11:59:29,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:59:29,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:59:29,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:59:31,341 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:59:31,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:59:31,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804658851] [2024-02-20 11:59:31,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804658851] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:59:31,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [25807971] [2024-02-20 11:59:31,341 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-02-20 11:59:31,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:59:31,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:59:31,342 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 11:59:31,343 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-02-20 11:59:31,436 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-20 11:59:31,437 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:59:31,438 INFO L262 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 31 conjunts are in the unsatisfiable core [2024-02-20 11:59:31,440 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:59:31,981 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-20 11:59:31,982 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 224 treesize of output 138 [2024-02-20 11:59:32,094 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:59:32,094 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:59:33,259 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-20 11:59:33,260 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 4 new quantified variables, introduced 6 case distinctions, treesize of input 933 treesize of output 425 [2024-02-20 11:59:40,307 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-20 11:59:40,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [25807971] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 11:59:40,308 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 11:59:40,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 9] total 26 [2024-02-20 11:59:40,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553333352] [2024-02-20 11:59:40,308 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 11:59:40,308 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-02-20 11:59:40,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:59:40,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-02-20 11:59:40,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=574, Unknown=0, NotChecked=0, Total=650 [2024-02-20 11:59:40,309 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 19 [2024-02-20 11:59:40,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 228 transitions, 7401 flow. Second operand has 26 states, 26 states have (on average 4.846153846153846) internal successors, (126), 26 states have internal predecessors, (126), 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) [2024-02-20 11:59:40,309 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:59:40,309 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 19 [2024-02-20 11:59:40,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:59:42,495 INFO L124 PetriNetUnfolderBase]: 236/496 cut-off events. [2024-02-20 11:59:42,496 INFO L125 PetriNetUnfolderBase]: For 84/84 co-relation queries the response was YES. [2024-02-20 11:59:42,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8501 conditions, 496 events. 236/496 cut-off events. For 84/84 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2339 event pairs, 3 based on Foata normal form. 1/425 useless extension candidates. Maximal degree in co-relation 4709. Up to 417 conditions per place. [2024-02-20 11:59:42,509 INFO L140 encePairwiseOnDemand]: 11/19 looper letters, 158 selfloop transitions, 41 changer transitions 100/300 dead transitions. [2024-02-20 11:59:42,509 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 300 transitions, 10354 flow [2024-02-20 11:59:42,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-02-20 11:59:42,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2024-02-20 11:59:42,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 263 transitions. [2024-02-20 11:59:42,510 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4071207430340557 [2024-02-20 11:59:42,511 INFO L308 CegarLoopForPetriNet]: 20 programPoint places, 167 predicate places. [2024-02-20 11:59:42,511 INFO L507 AbstractCegarLoop]: Abstraction has has 187 places, 300 transitions, 10354 flow [2024-02-20 11:59:42,511 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.846153846153846) internal successors, (126), 26 states have internal predecessors, (126), 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) [2024-02-20 11:59:42,511 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:59:42,511 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:59:42,523 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-02-20 11:59:42,723 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-02-20 11:59:42,723 INFO L432 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:59:42,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:59:42,723 INFO L85 PathProgramCache]: Analyzing trace with hash -1771533277, now seen corresponding path program 12 times [2024-02-20 11:59:42,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:59:42,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144011553] [2024-02-20 11:59:42,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:59:42,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:59:42,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:59:43,616 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:59:43,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:59:43,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144011553] [2024-02-20 11:59:43,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144011553] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:59:43,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1124072821] [2024-02-20 11:59:43,617 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-02-20 11:59:43,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:59:43,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:59:43,618 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 11:59:43,619 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-02-20 11:59:43,719 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-02-20 11:59:43,720 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:59:43,721 INFO L262 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 33 conjunts are in the unsatisfiable core [2024-02-20 11:59:43,723 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:59:44,347 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-20 11:59:44,348 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 225 treesize of output 141 [2024-02-20 11:59:44,431 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:59:44,431 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:59:45,322 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-20 11:59:45,323 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 4 new quantified variables, introduced 6 case distinctions, treesize of input 933 treesize of output 425 [2024-02-20 11:59:53,477 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-20 11:59:53,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1124072821] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 11:59:53,478 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 11:59:53,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 9] total 26 [2024-02-20 11:59:53,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875292333] [2024-02-20 11:59:53,478 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 11:59:53,478 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-02-20 11:59:53,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:59:53,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-02-20 11:59:53,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=569, Unknown=0, NotChecked=0, Total=650 [2024-02-20 11:59:53,479 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 19 [2024-02-20 11:59:53,479 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 300 transitions, 10354 flow. Second operand has 26 states, 26 states have (on average 4.846153846153846) internal successors, (126), 26 states have internal predecessors, (126), 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) [2024-02-20 11:59:53,479 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:59:53,479 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 19 [2024-02-20 11:59:53,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:59:57,364 INFO L124 PetriNetUnfolderBase]: 335/661 cut-off events. [2024-02-20 11:59:57,364 INFO L125 PetriNetUnfolderBase]: For 106/106 co-relation queries the response was YES. [2024-02-20 11:59:57,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11967 conditions, 661 events. 335/661 cut-off events. For 106/106 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 3192 event pairs, 3 based on Foata normal form. 1/548 useless extension candidates. Maximal degree in co-relation 6413. Up to 581 conditions per place. [2024-02-20 11:59:57,373 INFO L140 encePairwiseOnDemand]: 11/19 looper letters, 202 selfloop transitions, 79 changer transitions 106/388 dead transitions. [2024-02-20 11:59:57,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 388 transitions, 14162 flow [2024-02-20 11:59:57,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-02-20 11:59:57,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2024-02-20 11:59:57,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 280 transitions. [2024-02-20 11:59:57,375 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.43343653250773995 [2024-02-20 11:59:57,375 INFO L308 CegarLoopForPetriNet]: 20 programPoint places, 200 predicate places. [2024-02-20 11:59:57,375 INFO L507 AbstractCegarLoop]: Abstraction has has 220 places, 388 transitions, 14162 flow [2024-02-20 11:59:57,375 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.846153846153846) internal successors, (126), 26 states have internal predecessors, (126), 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) [2024-02-20 11:59:57,375 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:59:57,375 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:59:57,389 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-02-20 11:59:57,586 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:59:57,586 INFO L432 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:59:57,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:59:57,587 INFO L85 PathProgramCache]: Analyzing trace with hash -1548973375, now seen corresponding path program 13 times [2024-02-20 11:59:57,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:59:57,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521065791] [2024-02-20 11:59:57,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:59:57,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:59:57,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:59:59,082 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:59:59,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:59:59,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521065791] [2024-02-20 11:59:59,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521065791] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:59:59,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [269887255] [2024-02-20 11:59:59,083 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-02-20 11:59:59,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:59:59,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:59:59,084 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 11:59:59,084 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-02-20 11:59:59,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:59:59,199 INFO L262 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 26 conjunts are in the unsatisfiable core [2024-02-20 11:59:59,204 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:59:59,552 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-20 11:59:59,552 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 220 treesize of output 142 [2024-02-20 11:59:59,712 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-20 11:59:59,712 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:00:00,443 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-20 12:00:00,444 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 4 new quantified variables, introduced 6 case distinctions, treesize of input 933 treesize of output 425 [2024-02-20 12:00:08,054 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-20 12:00:08,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [269887255] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:00:08,054 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:00:08,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 9] total 23 [2024-02-20 12:00:08,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94310580] [2024-02-20 12:00:08,054 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:00:08,055 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-02-20 12:00:08,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:00:08,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-02-20 12:00:08,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=441, Unknown=0, NotChecked=0, Total=506 [2024-02-20 12:00:08,056 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 19 [2024-02-20 12:00:08,056 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 388 transitions, 14162 flow. Second operand has 23 states, 23 states have (on average 4.826086956521739) internal successors, (111), 23 states have internal predecessors, (111), 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) [2024-02-20 12:00:08,056 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:00:08,056 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 19 [2024-02-20 12:00:08,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:00:09,877 INFO L124 PetriNetUnfolderBase]: 438/831 cut-off events. [2024-02-20 12:00:09,877 INFO L125 PetriNetUnfolderBase]: For 120/120 co-relation queries the response was YES. [2024-02-20 12:00:09,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15845 conditions, 831 events. 438/831 cut-off events. For 120/120 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 4093 event pairs, 3 based on Foata normal form. 1/666 useless extension candidates. Maximal degree in co-relation 8671. Up to 743 conditions per place. [2024-02-20 12:00:09,892 INFO L140 encePairwiseOnDemand]: 11/19 looper letters, 271 selfloop transitions, 100 changer transitions 118/490 dead transitions. [2024-02-20 12:00:09,892 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 490 transitions, 18833 flow [2024-02-20 12:00:09,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-02-20 12:00:09,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2024-02-20 12:00:09,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 273 transitions. [2024-02-20 12:00:09,901 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.42260061919504643 [2024-02-20 12:00:09,902 INFO L308 CegarLoopForPetriNet]: 20 programPoint places, 233 predicate places. [2024-02-20 12:00:09,902 INFO L507 AbstractCegarLoop]: Abstraction has has 253 places, 490 transitions, 18833 flow [2024-02-20 12:00:09,902 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.826086956521739) internal successors, (111), 23 states have internal predecessors, (111), 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) [2024-02-20 12:00:09,902 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:00:09,902 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:00:09,920 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-02-20 12:00:10,102 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-02-20 12:00:10,103 INFO L432 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 12:00:10,103 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:00:10,103 INFO L85 PathProgramCache]: Analyzing trace with hash 1182860151, now seen corresponding path program 14 times [2024-02-20 12:00:10,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:00:10,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970676697] [2024-02-20 12:00:10,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:00:10,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:00:10,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:00:12,045 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:00:12,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:00:12,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970676697] [2024-02-20 12:00:12,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970676697] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:00:12,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [294122887] [2024-02-20 12:00:12,047 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-20 12:00:12,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:00:12,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:00:12,060 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:00:12,085 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-02-20 12:00:12,223 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-20 12:00:12,223 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:00:12,227 INFO L262 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 39 conjunts are in the unsatisfiable core [2024-02-20 12:00:12,233 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:00:12,271 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 [2024-02-20 12:00:12,758 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-20 12:00:12,758 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 202 treesize of output 142 [2024-02-20 12:00:12,983 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:00:12,984 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:00:17,256 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-20 12:00:17,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [294122887] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:00:17,256 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:00:17,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 9] total 24 [2024-02-20 12:00:17,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220317097] [2024-02-20 12:00:17,257 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:00:17,257 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-02-20 12:00:17,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:00:17,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-02-20 12:00:17,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=477, Unknown=0, NotChecked=0, Total=552 [2024-02-20 12:00:17,259 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 19 [2024-02-20 12:00:17,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 490 transitions, 18833 flow. Second operand has 24 states, 24 states have (on average 4.708333333333333) internal successors, (113), 24 states have internal predecessors, (113), 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) [2024-02-20 12:00:17,259 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:00:17,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 19 [2024-02-20 12:00:17,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:00:20,478 INFO L124 PetriNetUnfolderBase]: 470/882 cut-off events. [2024-02-20 12:00:20,479 INFO L125 PetriNetUnfolderBase]: For 126/126 co-relation queries the response was YES. [2024-02-20 12:00:20,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17697 conditions, 882 events. 470/882 cut-off events. For 126/126 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 4360 event pairs, 3 based on Foata normal form. 1/699 useless extension candidates. Maximal degree in co-relation 9728. Up to 794 conditions per place. [2024-02-20 12:00:20,493 INFO L140 encePairwiseOnDemand]: 11/19 looper letters, 288 selfloop transitions, 105 changer transitions 124/518 dead transitions. [2024-02-20 12:00:20,493 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 518 transitions, 20943 flow [2024-02-20 12:00:20,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-02-20 12:00:20,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-02-20 12:00:20,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 201 transitions. [2024-02-20 12:00:20,495 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4407894736842105 [2024-02-20 12:00:20,495 INFO L308 CegarLoopForPetriNet]: 20 programPoint places, 256 predicate places. [2024-02-20 12:00:20,495 INFO L507 AbstractCegarLoop]: Abstraction has has 276 places, 518 transitions, 20943 flow [2024-02-20 12:00:20,496 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.708333333333333) internal successors, (113), 24 states have internal predecessors, (113), 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) [2024-02-20 12:00:20,496 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:00:20,496 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:00:20,531 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-02-20 12:00:20,712 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:00:20,713 INFO L432 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 12:00:20,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:00:20,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1450348639, now seen corresponding path program 15 times [2024-02-20 12:00:20,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:00:20,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456332969] [2024-02-20 12:00:20,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:00:20,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:00:20,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:00:22,002 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:00:22,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:00:22,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456332969] [2024-02-20 12:00:22,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456332969] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:00:22,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [164768531] [2024-02-20 12:00:22,002 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-02-20 12:00:22,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:00:22,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:00:22,003 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:00:22,005 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-02-20 12:00:22,142 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-02-20 12:00:22,142 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:00:22,144 INFO L262 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 33 conjunts are in the unsatisfiable core [2024-02-20 12:00:22,146 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:00:22,814 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-20 12:00:22,815 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 227 treesize of output 143 [2024-02-20 12:00:22,902 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:00:22,902 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:00:23,910 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-20 12:00:23,911 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 4 new quantified variables, introduced 6 case distinctions, treesize of input 964 treesize of output 436 [2024-02-20 12:00:33,918 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-20 12:00:33,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [164768531] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:00:33,919 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:00:33,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 9] total 26 [2024-02-20 12:00:33,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501174916] [2024-02-20 12:00:33,919 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:00:33,919 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-02-20 12:00:33,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:00:33,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-02-20 12:00:33,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=574, Unknown=0, NotChecked=0, Total=650 [2024-02-20 12:00:33,920 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 19 [2024-02-20 12:00:33,920 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 518 transitions, 20943 flow. Second operand has 26 states, 26 states have (on average 4.846153846153846) internal successors, (126), 26 states have internal predecessors, (126), 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) [2024-02-20 12:00:33,920 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:00:33,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 19 [2024-02-20 12:00:33,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:00:37,020 INFO L124 PetriNetUnfolderBase]: 550/1029 cut-off events. [2024-02-20 12:00:37,020 INFO L125 PetriNetUnfolderBase]: For 152/152 co-relation queries the response was YES. [2024-02-20 12:00:37,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21682 conditions, 1029 events. 550/1029 cut-off events. For 152/152 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 5308 event pairs, 3 based on Foata normal form. 1/818 useless extension candidates. Maximal degree in co-relation 12490. Up to 941 conditions per place. [2024-02-20 12:00:37,038 INFO L140 encePairwiseOnDemand]: 11/19 looper letters, 371 selfloop transitions, 98 changer transitions 130/600 dead transitions. [2024-02-20 12:00:37,038 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 600 transitions, 25469 flow [2024-02-20 12:00:37,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-02-20 12:00:37,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2024-02-20 12:00:37,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 289 transitions. [2024-02-20 12:00:37,043 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.41109530583214793 [2024-02-20 12:00:37,043 INFO L308 CegarLoopForPetriNet]: 20 programPoint places, 292 predicate places. [2024-02-20 12:00:37,043 INFO L507 AbstractCegarLoop]: Abstraction has has 312 places, 600 transitions, 25469 flow [2024-02-20 12:00:37,043 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.846153846153846) internal successors, (126), 26 states have internal predecessors, (126), 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) [2024-02-20 12:00:37,043 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:00:37,043 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:00:37,085 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-02-20 12:00:37,249 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:00:37,249 INFO L432 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 12:00:37,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:00:37,250 INFO L85 PathProgramCache]: Analyzing trace with hash 109774771, now seen corresponding path program 16 times [2024-02-20 12:00:37,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:00:37,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247131348] [2024-02-20 12:00:37,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:00:37,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:00:37,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:00:38,482 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:00:38,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:00:38,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247131348] [2024-02-20 12:00:38,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247131348] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:00:38,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1211286245] [2024-02-20 12:00:38,483 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-02-20 12:00:38,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:00:38,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:00:38,484 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:00:38,485 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-02-20 12:00:38,609 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-02-20 12:00:38,609 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:00:38,611 INFO L262 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 26 conjunts are in the unsatisfiable core [2024-02-20 12:00:38,612 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:00:39,015 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-20 12:00:39,016 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 257 treesize of output 161 [2024-02-20 12:00:39,244 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-20 12:00:39,244 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:00:40,107 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-20 12:00:40,108 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 4 new quantified variables, introduced 6 case distinctions, treesize of input 964 treesize of output 436 [2024-02-20 12:00:51,904 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-20 12:00:51,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1211286245] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:00:51,904 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:00:51,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 9] total 23 [2024-02-20 12:00:51,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948866152] [2024-02-20 12:00:51,905 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:00:51,905 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-02-20 12:00:51,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:00:51,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-02-20 12:00:51,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=431, Unknown=0, NotChecked=0, Total=506 [2024-02-20 12:00:51,906 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 19 [2024-02-20 12:00:51,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 600 transitions, 25469 flow. Second operand has 23 states, 23 states have (on average 4.913043478260869) internal successors, (113), 23 states have internal predecessors, (113), 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) [2024-02-20 12:00:51,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:00:51,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 19 [2024-02-20 12:00:51,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:00:53,361 INFO L124 PetriNetUnfolderBase]: 570/1064 cut-off events. [2024-02-20 12:00:53,361 INFO L125 PetriNetUnfolderBase]: For 158/158 co-relation queries the response was YES. [2024-02-20 12:00:53,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23482 conditions, 1064 events. 570/1064 cut-off events. For 158/158 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 5506 event pairs, 3 based on Foata normal form. 1/841 useless extension candidates. Maximal degree in co-relation 13834. Up to 976 conditions per place. [2024-02-20 12:00:53,375 INFO L140 encePairwiseOnDemand]: 11/19 looper letters, 440 selfloop transitions, 42 changer transitions 136/619 dead transitions. [2024-02-20 12:00:53,375 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 619 transitions, 27515 flow [2024-02-20 12:00:53,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-02-20 12:00:53,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-02-20 12:00:53,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 180 transitions. [2024-02-20 12:00:53,377 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.41189931350114417 [2024-02-20 12:00:53,377 INFO L308 CegarLoopForPetriNet]: 20 programPoint places, 314 predicate places. [2024-02-20 12:00:53,377 INFO L507 AbstractCegarLoop]: Abstraction has has 334 places, 619 transitions, 27515 flow [2024-02-20 12:00:53,377 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.913043478260869) internal successors, (113), 23 states have internal predecessors, (113), 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) [2024-02-20 12:00:53,378 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:00:53,378 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:00:53,392 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-02-20 12:00:53,589 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:00:53,589 INFO L432 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 12:00:53,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:00:53,590 INFO L85 PathProgramCache]: Analyzing trace with hash -277347105, now seen corresponding path program 17 times [2024-02-20 12:00:53,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:00:53,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142531062] [2024-02-20 12:00:53,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:00:53,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:00:53,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:00:54,538 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:00:54,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:00:54,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142531062] [2024-02-20 12:00:54,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142531062] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:00:54,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1612392780] [2024-02-20 12:00:54,539 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-02-20 12:00:54,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:00:54,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:00:54,540 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:00:54,541 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-02-20 12:00:54,664 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-02-20 12:00:54,665 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:00:54,667 INFO L262 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 43 conjunts are in the unsatisfiable core [2024-02-20 12:00:54,669 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:00:54,690 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 [2024-02-20 12:00:54,710 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 [2024-02-20 12:00:55,278 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-20 12:00:55,278 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 215 treesize of output 143 [2024-02-20 12:00:55,357 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:00:55,357 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:00:59,427 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-20 12:00:59,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1612392780] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:00:59,427 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:00:59,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 9] total 26 [2024-02-20 12:00:59,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469172380] [2024-02-20 12:00:59,427 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:00:59,428 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-02-20 12:00:59,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:00:59,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-02-20 12:00:59,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=577, Unknown=0, NotChecked=0, Total=650 [2024-02-20 12:00:59,429 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 19 [2024-02-20 12:00:59,429 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 619 transitions, 27515 flow. Second operand has 26 states, 26 states have (on average 4.6923076923076925) internal successors, (122), 26 states have internal predecessors, (122), 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) [2024-02-20 12:00:59,429 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:00:59,429 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 19 [2024-02-20 12:00:59,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:01:03,102 INFO L124 PetriNetUnfolderBase]: 670/1284 cut-off events. [2024-02-20 12:01:03,102 INFO L125 PetriNetUnfolderBase]: For 213/213 co-relation queries the response was YES. [2024-02-20 12:01:03,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29523 conditions, 1284 events. 670/1284 cut-off events. For 213/213 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 7172 event pairs, 3 based on Foata normal form. 1/999 useless extension candidates. Maximal degree in co-relation 18548. Up to 1191 conditions per place. [2024-02-20 12:01:03,122 INFO L140 encePairwiseOnDemand]: 11/19 looper letters, 448 selfloop transitions, 139 changer transitions 162/750 dead transitions. [2024-02-20 12:01:03,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 750 transitions, 34867 flow [2024-02-20 12:01:03,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-02-20 12:01:03,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2024-02-20 12:01:03,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 329 transitions. [2024-02-20 12:01:03,128 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.41228070175438597 [2024-02-20 12:01:03,129 INFO L308 CegarLoopForPetriNet]: 20 programPoint places, 355 predicate places. [2024-02-20 12:01:03,129 INFO L507 AbstractCegarLoop]: Abstraction has has 375 places, 750 transitions, 34867 flow [2024-02-20 12:01:03,129 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.6923076923076925) internal successors, (122), 26 states have internal predecessors, (122), 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) [2024-02-20 12:01:03,129 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:01:03,129 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:01:03,154 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-02-20 12:01:03,336 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:01:03,336 INFO L432 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 12:01:03,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:01:03,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1599179767, now seen corresponding path program 18 times [2024-02-20 12:01:03,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:01:03,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716564263] [2024-02-20 12:01:03,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:01:03,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:01:03,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:01:04,169 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:01:04,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:01:04,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716564263] [2024-02-20 12:01:04,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716564263] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:01:04,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [128904761] [2024-02-20 12:01:04,169 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-02-20 12:01:04,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:01:04,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:01:04,179 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:01:04,193 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-02-20 12:01:04,301 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-02-20 12:01:04,301 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:01:04,303 INFO L262 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 39 conjunts are in the unsatisfiable core [2024-02-20 12:01:04,305 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:01:04,340 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 [2024-02-20 12:01:04,833 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-20 12:01:04,834 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 200 treesize of output 144 [2024-02-20 12:01:05,135 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:01:05,135 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:01:09,416 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-20 12:01:09,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [128904761] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:01:09,416 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:01:09,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 9] total 26 [2024-02-20 12:01:09,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762896309] [2024-02-20 12:01:09,417 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:01:09,417 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-02-20 12:01:09,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:01:09,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-02-20 12:01:09,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=563, Unknown=0, NotChecked=0, Total=650 [2024-02-20 12:01:09,418 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 19 [2024-02-20 12:01:09,418 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 750 transitions, 34867 flow. Second operand has 26 states, 26 states have (on average 4.769230769230769) internal successors, (124), 26 states have internal predecessors, (124), 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) [2024-02-20 12:01:09,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:01:09,418 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 19 [2024-02-20 12:01:09,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:01:12,189 INFO L124 PetriNetUnfolderBase]: 707/1342 cut-off events. [2024-02-20 12:01:12,189 INFO L125 PetriNetUnfolderBase]: For 220/220 co-relation queries the response was YES. [2024-02-20 12:01:12,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32195 conditions, 1342 events. 707/1342 cut-off events. For 220/220 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 7503 event pairs, 3 based on Foata normal form. 1/1037 useless extension candidates. Maximal degree in co-relation 20723. Up to 1249 conditions per place. [2024-02-20 12:01:12,209 INFO L140 encePairwiseOnDemand]: 11/19 looper letters, 529 selfloop transitions, 84 changer transitions 168/782 dead transitions. [2024-02-20 12:01:12,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 404 places, 782 transitions, 37913 flow [2024-02-20 12:01:12,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-02-20 12:01:12,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2024-02-20 12:01:12,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 232 transitions. [2024-02-20 12:01:12,211 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4070175438596491 [2024-02-20 12:01:12,211 INFO L308 CegarLoopForPetriNet]: 20 programPoint places, 384 predicate places. [2024-02-20 12:01:12,211 INFO L507 AbstractCegarLoop]: Abstraction has has 404 places, 782 transitions, 37913 flow [2024-02-20 12:01:12,211 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.769230769230769) internal successors, (124), 26 states have internal predecessors, (124), 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) [2024-02-20 12:01:12,211 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:01:12,211 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:01:12,223 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-02-20 12:01:12,423 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-02-20 12:01:12,423 INFO L432 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 12:01:12,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:01:12,424 INFO L85 PathProgramCache]: Analyzing trace with hash -1132653759, now seen corresponding path program 19 times [2024-02-20 12:01:12,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:01:12,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777811684] [2024-02-20 12:01:12,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:01:12,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:01:12,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:01:13,337 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:01:13,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:01:13,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777811684] [2024-02-20 12:01:13,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777811684] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:01:13,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2103116088] [2024-02-20 12:01:13,338 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-02-20 12:01:13,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:01:13,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:01:13,339 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:01:13,339 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-02-20 12:01:13,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:01:13,444 INFO L262 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 26 conjunts are in the unsatisfiable core [2024-02-20 12:01:13,445 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:01:13,830 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-20 12:01:13,830 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 243 treesize of output 163 [2024-02-20 12:01:14,028 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-20 12:01:14,029 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:01:14,814 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-20 12:01:14,815 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 4 new quantified variables, introduced 6 case distinctions, treesize of input 926 treesize of output 444 [2024-02-20 12:01:28,590 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-20 12:01:28,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2103116088] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:01:28,590 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:01:28,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 9] total 23 [2024-02-20 12:01:28,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712041101] [2024-02-20 12:01:28,591 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:01:28,591 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-02-20 12:01:28,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:01:28,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-02-20 12:01:28,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=436, Unknown=0, NotChecked=0, Total=506 [2024-02-20 12:01:28,592 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 19 [2024-02-20 12:01:28,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 782 transitions, 37913 flow. Second operand has 23 states, 23 states have (on average 4.826086956521739) internal successors, (111), 23 states have internal predecessors, (111), 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) [2024-02-20 12:01:28,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:01:28,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 19 [2024-02-20 12:01:28,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:01:30,021 INFO L124 PetriNetUnfolderBase]: 712/1356 cut-off events. [2024-02-20 12:01:30,021 INFO L125 PetriNetUnfolderBase]: For 221/221 co-relation queries the response was YES. [2024-02-20 12:01:30,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33881 conditions, 1356 events. 712/1356 cut-off events. For 221/221 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 7627 event pairs, 3 based on Foata normal form. 1/1047 useless extension candidates. Maximal degree in co-relation 21910. Up to 1263 conditions per place. [2024-02-20 12:01:30,042 INFO L140 encePairwiseOnDemand]: 11/19 looper letters, 557 selfloop transitions, 60 changer transitions 174/792 dead transitions. [2024-02-20 12:01:30,042 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 792 transitions, 39981 flow [2024-02-20 12:01:30,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-02-20 12:01:30,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-02-20 12:01:30,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 216 transitions. [2024-02-20 12:01:30,044 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.40601503759398494 [2024-02-20 12:01:30,044 INFO L308 CegarLoopForPetriNet]: 20 programPoint places, 411 predicate places. [2024-02-20 12:01:30,044 INFO L507 AbstractCegarLoop]: Abstraction has has 431 places, 792 transitions, 39981 flow [2024-02-20 12:01:30,044 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.826086956521739) internal successors, (111), 23 states have internal predecessors, (111), 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) [2024-02-20 12:01:30,044 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:01:30,045 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:01:30,059 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-02-20 12:01:30,252 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-02-20 12:01:30,252 INFO L432 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 12:01:30,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:01:30,253 INFO L85 PathProgramCache]: Analyzing trace with hash 488361601, now seen corresponding path program 20 times [2024-02-20 12:01:30,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:01:30,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000814617] [2024-02-20 12:01:30,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:01:30,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:01:30,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:01:31,746 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:01:31,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:01:31,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000814617] [2024-02-20 12:01:31,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000814617] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:01:31,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [334900692] [2024-02-20 12:01:31,746 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-20 12:01:31,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:01:31,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:01:31,747 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:01:31,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-02-20 12:01:31,874 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-20 12:01:31,874 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:01:31,876 INFO L262 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 33 conjunts are in the unsatisfiable core [2024-02-20 12:01:31,878 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:01:32,434 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-20 12:01:32,435 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 215 treesize of output 143 [2024-02-20 12:01:32,544 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:01:32,544 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:01:33,585 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-20 12:01:33,585 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 4 new quantified variables, introduced 6 case distinctions, treesize of input 947 treesize of output 423 [2024-02-20 12:01:48,267 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-20 12:01:48,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [334900692] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:01:48,267 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:01:48,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 9] total 27 [2024-02-20 12:01:48,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882645146] [2024-02-20 12:01:48,267 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:01:48,267 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-02-20 12:01:48,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:01:48,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-02-20 12:01:48,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=618, Unknown=0, NotChecked=0, Total=702 [2024-02-20 12:01:48,268 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 19 [2024-02-20 12:01:48,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 431 places, 792 transitions, 39981 flow. Second operand has 27 states, 27 states have (on average 4.666666666666667) internal successors, (126), 27 states have internal predecessors, (126), 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) [2024-02-20 12:01:48,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:01:48,268 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 19 [2024-02-20 12:01:48,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:01:50,153 INFO L124 PetriNetUnfolderBase]: 732/1395 cut-off events. [2024-02-20 12:01:50,154 INFO L125 PetriNetUnfolderBase]: For 223/223 co-relation queries the response was YES. [2024-02-20 12:01:50,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36245 conditions, 1395 events. 732/1395 cut-off events. For 223/223 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 7921 event pairs, 3 based on Foata normal form. 1/1076 useless extension candidates. Maximal degree in co-relation 23591. Up to 1302 conditions per place. [2024-02-20 12:01:50,174 INFO L140 encePairwiseOnDemand]: 11/19 looper letters, 584 selfloop transitions, 52 changer transitions 180/817 dead transitions. [2024-02-20 12:01:50,174 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 457 places, 817 transitions, 42869 flow [2024-02-20 12:01:50,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-02-20 12:01:50,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-02-20 12:01:50,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 190 transitions. [2024-02-20 12:01:50,175 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.37037037037037035 [2024-02-20 12:01:50,176 INFO L308 CegarLoopForPetriNet]: 20 programPoint places, 437 predicate places. [2024-02-20 12:01:50,176 INFO L507 AbstractCegarLoop]: Abstraction has has 457 places, 817 transitions, 42869 flow [2024-02-20 12:01:50,176 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.666666666666667) internal successors, (126), 27 states have internal predecessors, (126), 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) [2024-02-20 12:01:50,176 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:01:50,176 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:01:50,192 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-02-20 12:01:50,376 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:01:50,377 INFO L432 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 12:01:50,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:01:50,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1620185975, now seen corresponding path program 21 times [2024-02-20 12:01:50,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:01:50,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034634029] [2024-02-20 12:01:50,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:01:50,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:01:50,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:01:51,257 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:01:51,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:01:51,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034634029] [2024-02-20 12:01:51,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034634029] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:01:51,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1029591916] [2024-02-20 12:01:51,258 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-02-20 12:01:51,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:01:51,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:01:51,260 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:01:51,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-02-20 12:01:51,390 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-02-20 12:01:51,390 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:01:51,391 INFO L262 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 43 conjunts are in the unsatisfiable core [2024-02-20 12:01:51,393 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:01:51,412 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 [2024-02-20 12:01:51,434 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 [2024-02-20 12:01:51,918 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-20 12:01:51,918 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 227 treesize of output 163 [2024-02-20 12:01:52,116 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:01:52,116 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:01:56,023 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-20 12:01:56,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1029591916] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:01:56,023 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:01:56,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 9] total 25 [2024-02-20 12:01:56,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855388124] [2024-02-20 12:01:56,024 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:01:56,024 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-02-20 12:01:56,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:01:56,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-02-20 12:01:56,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=513, Unknown=0, NotChecked=0, Total=600 [2024-02-20 12:01:56,025 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 19 [2024-02-20 12:01:56,025 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 457 places, 817 transitions, 42869 flow. Second operand has 25 states, 25 states have (on average 4.8) internal successors, (120), 25 states have internal predecessors, (120), 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) [2024-02-20 12:01:56,025 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:01:56,025 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 19 [2024-02-20 12:01:56,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:02:03,537 INFO L124 PetriNetUnfolderBase]: 915/1687 cut-off events. [2024-02-20 12:02:03,537 INFO L125 PetriNetUnfolderBase]: For 249/249 co-relation queries the response was YES. [2024-02-20 12:02:03,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45481 conditions, 1687 events. 915/1687 cut-off events. For 249/249 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 9674 event pairs, 3 based on Foata normal form. 1/1278 useless extension candidates. Maximal degree in co-relation 29339. Up to 1592 conditions per place. [2024-02-20 12:02:03,564 INFO L140 encePairwiseOnDemand]: 11/19 looper letters, 539 selfloop transitions, 252 changer transitions 187/979 dead transitions. [2024-02-20 12:02:03,564 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 491 places, 979 transitions, 53300 flow [2024-02-20 12:02:03,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-02-20 12:02:03,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2024-02-20 12:02:03,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 290 transitions. [2024-02-20 12:02:03,566 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.43609022556390975 [2024-02-20 12:02:03,566 INFO L308 CegarLoopForPetriNet]: 20 programPoint places, 471 predicate places. [2024-02-20 12:02:03,566 INFO L507 AbstractCegarLoop]: Abstraction has has 491 places, 979 transitions, 53300 flow [2024-02-20 12:02:03,566 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.8) internal successors, (120), 25 states have internal predecessors, (120), 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) [2024-02-20 12:02:03,566 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:02:03,566 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:02:03,579 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-02-20 12:02:03,779 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:02:03,779 INFO L432 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 12:02:03,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:02:03,780 INFO L85 PathProgramCache]: Analyzing trace with hash -1601695941, now seen corresponding path program 22 times [2024-02-20 12:02:03,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:02:03,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139358558] [2024-02-20 12:02:03,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:02:03,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:02:03,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:02:05,733 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:02:05,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:02:05,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139358558] [2024-02-20 12:02:05,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139358558] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:02:05,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1200868005] [2024-02-20 12:02:05,734 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-02-20 12:02:05,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:02:05,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:02:05,735 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:02:05,736 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-02-20 12:02:05,848 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-02-20 12:02:05,848 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:02:05,850 INFO L262 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 26 conjunts are in the unsatisfiable core [2024-02-20 12:02:05,852 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:02:06,287 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-20 12:02:06,288 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 243 treesize of output 163 [2024-02-20 12:02:06,506 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-20 12:02:06,507 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:02:07,326 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-20 12:02:07,326 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 4 new quantified variables, introduced 6 case distinctions, treesize of input 978 treesize of output 434 [2024-02-20 12:02:17,119 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-20 12:02:17,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1200868005] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:02:17,119 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:02:17,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 9] total 23 [2024-02-20 12:02:17,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461964654] [2024-02-20 12:02:17,120 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:02:17,121 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-02-20 12:02:17,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:02:17,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-02-20 12:02:17,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=432, Unknown=0, NotChecked=0, Total=506 [2024-02-20 12:02:17,122 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 19 [2024-02-20 12:02:17,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 491 places, 979 transitions, 53300 flow. Second operand has 23 states, 23 states have (on average 4.913043478260869) internal successors, (113), 23 states have internal predecessors, (113), 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) [2024-02-20 12:02:17,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:02:17,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 19 [2024-02-20 12:02:17,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:02:19,230 INFO L124 PetriNetUnfolderBase]: 956/1749 cut-off events. [2024-02-20 12:02:19,230 INFO L125 PetriNetUnfolderBase]: For 255/255 co-relation queries the response was YES. [2024-02-20 12:02:19,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48898 conditions, 1749 events. 956/1749 cut-off events. For 255/255 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 10029 event pairs, 3 based on Foata normal form. 1/1316 useless extension candidates. Maximal degree in co-relation 31882. Up to 1654 conditions per place. [2024-02-20 12:02:19,261 INFO L140 encePairwiseOnDemand]: 11/19 looper letters, 769 selfloop transitions, 50 changer transitions 193/1013 dead transitions. [2024-02-20 12:02:19,261 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 510 places, 1013 transitions, 57172 flow [2024-02-20 12:02:19,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-02-20 12:02:19,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-02-20 12:02:19,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 160 transitions. [2024-02-20 12:02:19,262 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.42105263157894735 [2024-02-20 12:02:19,262 INFO L308 CegarLoopForPetriNet]: 20 programPoint places, 490 predicate places. [2024-02-20 12:02:19,262 INFO L507 AbstractCegarLoop]: Abstraction has has 510 places, 1013 transitions, 57172 flow [2024-02-20 12:02:19,263 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.913043478260869) internal successors, (113), 23 states have internal predecessors, (113), 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) [2024-02-20 12:02:19,263 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:02:19,263 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:02:19,279 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-02-20 12:02:19,463 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-02-20 12:02:19,463 INFO L432 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 12:02:19,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:02:19,464 INFO L85 PathProgramCache]: Analyzing trace with hash 816744483, now seen corresponding path program 23 times [2024-02-20 12:02:19,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:02:19,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955973028] [2024-02-20 12:02:19,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:02:19,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:02:19,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:02:20,259 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:02:20,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:02:20,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955973028] [2024-02-20 12:02:20,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955973028] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:02:20,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [855156300] [2024-02-20 12:02:20,260 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-02-20 12:02:20,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:02:20,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:02:20,261 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:02:20,263 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-02-20 12:02:20,391 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-20 12:02:20,391 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:02:20,393 INFO L262 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 28 conjunts are in the unsatisfiable core [2024-02-20 12:02:20,395 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:02:20,906 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-20 12:02:20,906 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 215 treesize of output 143 [2024-02-20 12:02:21,010 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-20 12:02:21,010 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:02:21,922 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-20 12:02:21,923 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 4 new quantified variables, introduced 6 case distinctions, treesize of input 978 treesize of output 434 [2024-02-20 12:02:28,887 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-20 12:02:28,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [855156300] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:02:28,887 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:02:28,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 9] total 25 [2024-02-20 12:02:28,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821778445] [2024-02-20 12:02:28,887 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:02:28,888 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-02-20 12:02:28,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:02:28,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-02-20 12:02:28,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=519, Unknown=0, NotChecked=0, Total=600 [2024-02-20 12:02:28,888 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 19 [2024-02-20 12:02:28,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 510 places, 1013 transitions, 57172 flow. Second operand has 25 states, 25 states have (on average 4.76) internal successors, (119), 25 states have internal predecessors, (119), 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) [2024-02-20 12:02:28,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:02:28,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 19 [2024-02-20 12:02:28,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:02:30,364 INFO L124 PetriNetUnfolderBase]: 964/1768 cut-off events. [2024-02-20 12:02:30,364 INFO L125 PetriNetUnfolderBase]: For 256/256 co-relation queries the response was YES. [2024-02-20 12:02:30,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51190 conditions, 1768 events. 964/1768 cut-off events. For 256/256 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 10195 event pairs, 3 based on Foata normal form. 1/1329 useless extension candidates. Maximal degree in co-relation 33541. Up to 1673 conditions per place. [2024-02-20 12:02:30,392 INFO L140 encePairwiseOnDemand]: 11/19 looper letters, 781 selfloop transitions, 45 changer transitions 199/1026 dead transitions. [2024-02-20 12:02:30,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 529 places, 1026 transitions, 59956 flow [2024-02-20 12:02:30,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-02-20 12:02:30,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-02-20 12:02:30,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 146 transitions. [2024-02-20 12:02:30,393 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.38421052631578945 [2024-02-20 12:02:30,393 INFO L308 CegarLoopForPetriNet]: 20 programPoint places, 509 predicate places. [2024-02-20 12:02:30,393 INFO L507 AbstractCegarLoop]: Abstraction has has 529 places, 1026 transitions, 59956 flow [2024-02-20 12:02:30,394 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.76) internal successors, (119), 25 states have internal predecessors, (119), 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) [2024-02-20 12:02:30,394 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:02:30,394 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:02:30,408 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-02-20 12:02:30,605 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-02-20 12:02:30,605 INFO L432 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 12:02:30,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:02:30,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1203866359, now seen corresponding path program 24 times [2024-02-20 12:02:30,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:02:30,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309016544] [2024-02-20 12:02:30,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:02:30,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:02:30,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:02:31,496 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:02:31,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:02:31,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309016544] [2024-02-20 12:02:31,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309016544] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:02:31,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [444163300] [2024-02-20 12:02:31,497 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-02-20 12:02:31,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:02:31,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:02:31,498 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:02:31,498 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-02-20 12:02:31,598 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-02-20 12:02:31,598 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:02:31,599 INFO L262 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 31 conjunts are in the unsatisfiable core [2024-02-20 12:02:31,601 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:02:32,245 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-20 12:02:32,246 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 5 new quantified variables, introduced 10 case distinctions, treesize of input 295 treesize of output 271 [2024-02-20 12:02:36,050 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:02:36,050 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:02:38,565 INFO L349 Elim1Store]: treesize reduction 10, result has 97.8 percent of original size [2024-02-20 12:02:38,565 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 1114 treesize of output 964 [2024-02-20 12:03:08,910 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-02-20 12:03:33,187 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-02-20 12:03:55,791 WARN L672 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2024-02-20 12:04:30,480 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") [2024-02-20 12:04:30,482 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2024-02-20 12:04:30,484 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 [2024-02-20 12:04:30,497 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-02-20 12:04:30,682 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-02-20 12:04:30,683 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:287) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convertForPreprocessedInputTerms(SimplifyDDA2.java:519) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convert(SimplifyDDA2.java:503) 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:609) 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.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.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:349) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:443) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:378) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:360) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:527) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:414) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:243) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:191) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:172) 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) ... 68 more [2024-02-20 12:04:30,688 INFO L158 Benchmark]: Toolchain (without parser) took 320879.73ms. Allocated memory was 155.2MB in the beginning and 1.8GB in the end (delta: 1.7GB). Free memory was 88.2MB in the beginning and 1.4GB in the end (delta: -1.3GB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. [2024-02-20 12:04:30,688 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 104.9MB. Free memory is still 70.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-02-20 12:04:30,688 INFO L158 Benchmark]: CACSL2BoogieTranslator took 309.57ms. Allocated memory is still 155.2MB. Free memory was 88.1MB in the beginning and 125.0MB in the end (delta: -37.0MB). Peak memory consumption was 13.0MB. Max. memory is 16.1GB. [2024-02-20 12:04:30,688 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.23ms. Allocated memory is still 155.2MB. Free memory was 125.0MB in the beginning and 122.0MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-02-20 12:04:30,689 INFO L158 Benchmark]: Boogie Preprocessor took 69.78ms. Allocated memory is still 155.2MB. Free memory was 122.0MB in the beginning and 118.8MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-02-20 12:04:30,689 INFO L158 Benchmark]: RCFGBuilder took 932.62ms. Allocated memory is still 155.2MB. Free memory was 118.8MB in the beginning and 72.6MB in the end (delta: 46.1MB). Peak memory consumption was 70.1MB. Max. memory is 16.1GB. [2024-02-20 12:04:30,689 INFO L158 Benchmark]: TraceAbstraction took 319501.87ms. Allocated memory was 155.2MB in the beginning and 1.8GB in the end (delta: 1.7GB). Free memory was 71.9MB in the beginning and 1.4GB in the end (delta: -1.3GB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. [2024-02-20 12:04:30,690 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 104.9MB. Free memory is still 70.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 309.57ms. Allocated memory is still 155.2MB. Free memory was 88.1MB in the beginning and 125.0MB in the end (delta: -37.0MB). Peak memory consumption was 13.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 59.23ms. Allocated memory is still 155.2MB. Free memory was 125.0MB in the beginning and 122.0MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 69.78ms. Allocated memory is still 155.2MB. Free memory was 122.0MB in the beginning and 118.8MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 932.62ms. Allocated memory is still 155.2MB. Free memory was 118.8MB in the beginning and 72.6MB in the end (delta: 46.1MB). Peak memory consumption was 70.1MB. Max. memory is 16.1GB. * TraceAbstraction took 319501.87ms. Allocated memory was 155.2MB in the beginning and 1.8GB in the end (delta: 1.7GB). Free memory was 71.9MB in the beginning and 1.4GB in the end (delta: -1.3GB). Peak memory consumption was 1.1GB. 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/parallel-misc-1.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 c870162e8691a06e8bb6a8083be9eaf3f7ddc94357fb302a6e1fdd1b7aa873f8 --traceabstraction.positions.where.we.compute.the.hoare.annotation All --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.owicki-witnesses-448d4d7-m [2024-02-20 12:04:32,927 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-20 12:04:33,006 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-02-20 12:04:33,010 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-20 12:04:33,012 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-20 12:04:33,047 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-20 12:04:33,047 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-20 12:04:33,048 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-20 12:04:33,048 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-20 12:04:33,049 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-20 12:04:33,049 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-20 12:04:33,049 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-20 12:04:33,050 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-20 12:04:33,050 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-20 12:04:33,050 INFO L153 SettingsManager]: * Use SBE=true [2024-02-20 12:04:33,051 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-20 12:04:33,051 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-20 12:04:33,051 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-20 12:04:33,051 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-20 12:04:33,052 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-20 12:04:33,052 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-20 12:04:33,056 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-20 12:04:33,057 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-20 12:04:33,057 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-02-20 12:04:33,061 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-02-20 12:04:33,061 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-20 12:04:33,061 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-02-20 12:04:33,061 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-20 12:04:33,062 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-20 12:04:33,062 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-20 12:04:33,063 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-20 12:04:33,063 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-20 12:04:33,064 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-20 12:04:33,064 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-20 12:04:33,064 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-20 12:04:33,064 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-20 12:04:33,065 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-20 12:04:33,065 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-20 12:04:33,066 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-02-20 12:04:33,066 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-02-20 12:04:33,066 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-20 12:04:33,067 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-20 12:04:33,067 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-20 12:04:33,067 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-20 12:04:33,067 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-20 12:04:33,068 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-02-20 12:04:33,068 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c870162e8691a06e8bb6a8083be9eaf3f7ddc94357fb302a6e1fdd1b7aa873f8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All [2024-02-20 12:04:33,414 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-20 12:04:33,438 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-20 12:04:33,440 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-20 12:04:33,441 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-20 12:04:33,442 INFO L274 PluginConnector]: CDTParser initialized [2024-02-20 12:04:33,443 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-misc-1.wvr.c [2024-02-20 12:04:34,614 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-20 12:04:34,825 INFO L384 CDTParser]: Found 1 translation units. [2024-02-20 12:04:34,825 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-1.wvr.c [2024-02-20 12:04:34,843 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/746d58d81/34bf1ae5a4a641ce9592912682d82da0/FLAG9670223df [2024-02-20 12:04:34,860 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/746d58d81/34bf1ae5a4a641ce9592912682d82da0 [2024-02-20 12:04:34,863 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-20 12:04:34,865 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-02-20 12:04:34,869 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-20 12:04:34,869 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-20 12:04:34,874 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-20 12:04:34,875 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 12:04:34" (1/1) ... [2024-02-20 12:04:34,875 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e2db703 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:04:34, skipping insertion in model container [2024-02-20 12:04:34,876 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 12:04:34" (1/1) ... [2024-02-20 12:04:34,902 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-02-20 12:04:35,125 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-1.wvr.c[2755,2768] [2024-02-20 12:04:35,146 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-20 12:04:35,161 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-02-20 12:04:35,167 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-02-20 12:04:35,183 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-1.wvr.c[2755,2768] [2024-02-20 12:04:35,186 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-20 12:04:35,203 INFO L202 MainTranslator]: Completed pre-run [2024-02-20 12:04:35,232 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-1.wvr.c[2755,2768] [2024-02-20 12:04:35,238 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-20 12:04:35,267 INFO L206 MainTranslator]: Completed translation [2024-02-20 12:04:35,268 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:04:35 WrapperNode [2024-02-20 12:04:35,268 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-20 12:04:35,269 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-20 12:04:35,269 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-20 12:04:35,269 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-20 12:04:35,276 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:04:35" (1/1) ... [2024-02-20 12:04:35,301 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:04:35" (1/1) ... [2024-02-20 12:04:35,345 INFO L138 Inliner]: procedures = 25, calls = 41, calls flagged for inlining = 17, calls inlined = 31, statements flattened = 269 [2024-02-20 12:04:35,346 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-20 12:04:35,346 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-20 12:04:35,347 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-20 12:04:35,347 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-20 12:04:35,358 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:04:35" (1/1) ... [2024-02-20 12:04:35,358 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:04:35" (1/1) ... [2024-02-20 12:04:35,367 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:04:35" (1/1) ... [2024-02-20 12:04:35,385 INFO L175 MemorySlicer]: Split 13 memory accesses to 4 slices as follows [2, 2, 2, 7]. 54 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]. [2024-02-20 12:04:35,385 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:04:35" (1/1) ... [2024-02-20 12:04:35,385 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:04:35" (1/1) ... [2024-02-20 12:04:35,399 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:04:35" (1/1) ... [2024-02-20 12:04:35,402 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:04:35" (1/1) ... [2024-02-20 12:04:35,405 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:04:35" (1/1) ... [2024-02-20 12:04:35,407 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:04:35" (1/1) ... [2024-02-20 12:04:35,410 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-20 12:04:35,411 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-20 12:04:35,411 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-20 12:04:35,412 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-20 12:04:35,412 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:04:35" (1/1) ... [2024-02-20 12:04:35,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-20 12:04:35,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:04:35,463 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) [2024-02-20 12:04:35,467 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 [2024-02-20 12:04:35,504 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-20 12:04:35,504 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-02-20 12:04:35,504 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-02-20 12:04:35,504 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-02-20 12:04:35,505 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-02-20 12:04:35,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-02-20 12:04:35,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-02-20 12:04:35,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-02-20 12:04:35,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2024-02-20 12:04:35,505 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-20 12:04:35,505 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-02-20 12:04:35,505 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-02-20 12:04:35,506 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-02-20 12:04:35,506 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2024-02-20 12:04:35,506 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2024-02-20 12:04:35,506 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-20 12:04:35,506 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-20 12:04:35,506 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-20 12:04:35,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-02-20 12:04:35,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-02-20 12:04:35,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2024-02-20 12:04:35,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2024-02-20 12:04:35,509 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-02-20 12:04:35,620 INFO L244 CfgBuilder]: Building ICFG [2024-02-20 12:04:35,622 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-20 12:04:36,283 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-20 12:04:36,283 INFO L293 CfgBuilder]: Performing block encoding [2024-02-20 12:04:36,743 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-20 12:04:36,743 INFO L320 CfgBuilder]: Removed 3 assume(true) statements. [2024-02-20 12:04:36,744 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 12:04:36 BoogieIcfgContainer [2024-02-20 12:04:36,744 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-20 12:04:36,746 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-20 12:04:36,746 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-20 12:04:36,749 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-20 12:04:36,749 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.02 12:04:34" (1/3) ... [2024-02-20 12:04:36,750 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75b11548 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 12:04:36, skipping insertion in model container [2024-02-20 12:04:36,750 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:04:35" (2/3) ... [2024-02-20 12:04:36,751 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75b11548 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 12:04:36, skipping insertion in model container [2024-02-20 12:04:36,752 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 12:04:36" (3/3) ... [2024-02-20 12:04:36,753 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-1.wvr.c [2024-02-20 12:04:36,769 INFO L221 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-20 12:04:36,769 INFO L180 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-02-20 12:04:36,769 INFO L635 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-20 12:04:36,809 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-02-20 12:04:36,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 23 places, 19 transitions, 52 flow [2024-02-20 12:04:36,863 INFO L124 PetriNetUnfolderBase]: 3/17 cut-off events. [2024-02-20 12:04:36,864 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-02-20 12:04:36,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26 conditions, 17 events. 3/17 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 6 event pairs, 0 based on Foata normal form. 0/13 useless extension candidates. Maximal degree in co-relation 9. Up to 2 conditions per place. [2024-02-20 12:04:36,868 INFO L82 GeneralOperation]: Start removeDead. Operand has 23 places, 19 transitions, 52 flow [2024-02-20 12:04:36,870 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 20 places, 16 transitions, 44 flow [2024-02-20 12:04:36,882 INFO L368 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-20 12:04:36,893 INFO L369 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=All, 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;@298fa8e2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-20 12:04:36,893 INFO L370 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-02-20 12:04:36,928 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-20 12:04:36,928 INFO L124 PetriNetUnfolderBase]: 3/15 cut-off events. [2024-02-20 12:04:36,928 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-02-20 12:04:36,928 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:04:36,929 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:04:36,929 INFO L432 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 12:04:36,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:04:36,933 INFO L85 PathProgramCache]: Analyzing trace with hash -317864428, now seen corresponding path program 1 times [2024-02-20 12:04:36,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-02-20 12:04:36,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [812651773] [2024-02-20 12:04:36,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:04:36,946 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 [2024-02-20 12:04:36,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-02-20 12:04:36,950 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) [2024-02-20 12:04:36,951 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 [2024-02-20 12:04:37,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:04:37,073 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 6 conjunts are in the unsatisfiable core [2024-02-20 12:04:37,077 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:04:37,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:04:37,237 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-02-20 12:04:37,238 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-02-20 12:04:37,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [812651773] [2024-02-20 12:04:37,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [812651773] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 12:04:37,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-20 12:04:37,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-20 12:04:37,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292611598] [2024-02-20 12:04:37,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 12:04:37,249 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-20 12:04:37,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-02-20 12:04:37,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-20 12:04:37,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-02-20 12:04:37,278 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 19 [2024-02-20 12:04:37,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 16 transitions, 44 flow. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 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) [2024-02-20 12:04:37,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:04:37,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 19 [2024-02-20 12:04:37,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:04:37,538 INFO L124 PetriNetUnfolderBase]: 70/120 cut-off events. [2024-02-20 12:04:37,538 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2024-02-20 12:04:37,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 262 conditions, 120 events. 70/120 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 285 event pairs, 9 based on Foata normal form. 1/80 useless extension candidates. Maximal degree in co-relation 190. Up to 69 conditions per place. [2024-02-20 12:04:37,541 INFO L140 encePairwiseOnDemand]: 13/19 looper letters, 28 selfloop transitions, 10 changer transitions 1/40 dead transitions. [2024-02-20 12:04:37,541 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 40 transitions, 185 flow [2024-02-20 12:04:37,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-20 12:04:37,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-20 12:04:37,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 55 transitions. [2024-02-20 12:04:37,553 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5789473684210527 [2024-02-20 12:04:37,557 INFO L308 CegarLoopForPetriNet]: 20 programPoint places, 4 predicate places. [2024-02-20 12:04:37,558 INFO L507 AbstractCegarLoop]: Abstraction has has 24 places, 40 transitions, 185 flow [2024-02-20 12:04:37,559 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 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) [2024-02-20 12:04:37,559 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:04:37,559 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:04:37,563 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 [2024-02-20 12:04:37,763 WARN L489 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 [2024-02-20 12:04:37,763 INFO L432 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 12:04:37,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:04:37,764 INFO L85 PathProgramCache]: Analyzing trace with hash -1977607466, now seen corresponding path program 1 times [2024-02-20 12:04:37,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-02-20 12:04:37,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [785888282] [2024-02-20 12:04:37,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:04:37,765 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 [2024-02-20 12:04:37,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-02-20 12:04:37,766 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) [2024-02-20 12:04:37,806 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 [2024-02-20 12:04:37,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:04:37,939 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 6 conjunts are in the unsatisfiable core [2024-02-20 12:04:37,941 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:04:38,026 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:04:38,026 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-02-20 12:04:38,027 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-02-20 12:04:38,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [785888282] [2024-02-20 12:04:38,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [785888282] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 12:04:38,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-20 12:04:38,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-20 12:04:38,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248817043] [2024-02-20 12:04:38,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 12:04:38,032 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-20 12:04:38,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-02-20 12:04:38,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-20 12:04:38,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-02-20 12:04:38,034 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 19 [2024-02-20 12:04:38,036 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 40 transitions, 185 flow. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 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) [2024-02-20 12:04:38,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:04:38,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 19 [2024-02-20 12:04:38,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:04:38,271 INFO L124 PetriNetUnfolderBase]: 57/103 cut-off events. [2024-02-20 12:04:38,272 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2024-02-20 12:04:38,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 330 conditions, 103 events. 57/103 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 251 event pairs, 2 based on Foata normal form. 0/72 useless extension candidates. Maximal degree in co-relation 253. Up to 75 conditions per place. [2024-02-20 12:04:38,277 INFO L140 encePairwiseOnDemand]: 13/19 looper letters, 28 selfloop transitions, 4 changer transitions 10/43 dead transitions. [2024-02-20 12:04:38,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 43 transitions, 281 flow [2024-02-20 12:04:38,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-20 12:04:38,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-20 12:04:38,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 47 transitions. [2024-02-20 12:04:38,280 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.49473684210526314 [2024-02-20 12:04:38,280 INFO L308 CegarLoopForPetriNet]: 20 programPoint places, 8 predicate places. [2024-02-20 12:04:38,280 INFO L507 AbstractCegarLoop]: Abstraction has has 28 places, 43 transitions, 281 flow [2024-02-20 12:04:38,281 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 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) [2024-02-20 12:04:38,281 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:04:38,285 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:04:38,289 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 [2024-02-20 12:04:38,489 WARN L489 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 [2024-02-20 12:04:38,490 INFO L432 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 12:04:38,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:04:38,490 INFO L85 PathProgramCache]: Analyzing trace with hash 606746522, now seen corresponding path program 2 times [2024-02-20 12:04:38,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-02-20 12:04:38,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1686952573] [2024-02-20 12:04:38,491 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-20 12:04:38,491 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 [2024-02-20 12:04:38,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-02-20 12:04:38,492 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) [2024-02-20 12:04:38,493 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 [2024-02-20 12:04:38,609 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-20 12:04:38,609 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:04:38,614 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 9 conjunts are in the unsatisfiable core [2024-02-20 12:04:38,616 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:04:38,676 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:04:38,676 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-02-20 12:04:38,676 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-02-20 12:04:38,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1686952573] [2024-02-20 12:04:38,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1686952573] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 12:04:38,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-20 12:04:38,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-20 12:04:38,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750515923] [2024-02-20 12:04:38,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 12:04:38,677 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-20 12:04:38,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-02-20 12:04:38,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-20 12:04:38,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-20 12:04:38,678 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 19 [2024-02-20 12:04:38,678 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 43 transitions, 281 flow. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 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) [2024-02-20 12:04:38,678 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:04:38,678 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 19 [2024-02-20 12:04:38,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:04:38,845 INFO L124 PetriNetUnfolderBase]: 85/167 cut-off events. [2024-02-20 12:04:38,846 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2024-02-20 12:04:38,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 698 conditions, 167 events. 85/167 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 514 event pairs, 6 based on Foata normal form. 0/125 useless extension candidates. Maximal degree in co-relation 334. Up to 111 conditions per place. [2024-02-20 12:04:38,847 INFO L140 encePairwiseOnDemand]: 15/19 looper letters, 48 selfloop transitions, 3 changer transitions 20/72 dead transitions. [2024-02-20 12:04:38,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 72 transitions, 618 flow [2024-02-20 12:04:38,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-20 12:04:38,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-20 12:04:38,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 41 transitions. [2024-02-20 12:04:38,849 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5394736842105263 [2024-02-20 12:04:38,849 INFO L308 CegarLoopForPetriNet]: 20 programPoint places, 11 predicate places. [2024-02-20 12:04:38,849 INFO L507 AbstractCegarLoop]: Abstraction has has 31 places, 72 transitions, 618 flow [2024-02-20 12:04:38,849 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 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) [2024-02-20 12:04:38,850 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:04:38,850 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:04:38,871 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 (4)] Forceful destruction successful, exit code 0 [2024-02-20 12:04:39,054 WARN L489 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 [2024-02-20 12:04:39,055 INFO L432 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 12:04:39,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:04:39,055 INFO L85 PathProgramCache]: Analyzing trace with hash 681335701, now seen corresponding path program 1 times [2024-02-20 12:04:39,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-02-20 12:04:39,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1189747937] [2024-02-20 12:04:39,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:04:39,056 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 [2024-02-20 12:04:39,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-02-20 12:04:39,059 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) [2024-02-20 12:04:39,060 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 [2024-02-20 12:04:39,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:04:39,172 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2024-02-20 12:04:39,173 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:04:39,261 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:04:39,262 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-02-20 12:04:39,262 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-02-20 12:04:39,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1189747937] [2024-02-20 12:04:39,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1189747937] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 12:04:39,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-20 12:04:39,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-20 12:04:39,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772322127] [2024-02-20 12:04:39,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 12:04:39,263 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-20 12:04:39,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-02-20 12:04:39,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-20 12:04:39,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-20 12:04:39,265 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 19 [2024-02-20 12:04:39,265 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 72 transitions, 618 flow. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 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) [2024-02-20 12:04:39,266 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:04:39,266 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 19 [2024-02-20 12:04:39,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:04:39,407 INFO L124 PetriNetUnfolderBase]: 66/131 cut-off events. [2024-02-20 12:04:39,408 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2024-02-20 12:04:39,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 685 conditions, 131 events. 66/131 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 376 event pairs, 4 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 415. Up to 103 conditions per place. [2024-02-20 12:04:39,409 INFO L140 encePairwiseOnDemand]: 15/19 looper letters, 31 selfloop transitions, 2 changer transitions 25/59 dead transitions. [2024-02-20 12:04:39,409 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 59 transitions, 624 flow [2024-02-20 12:04:39,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-20 12:04:39,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-20 12:04:39,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 39 transitions. [2024-02-20 12:04:39,411 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5131578947368421 [2024-02-20 12:04:39,412 INFO L308 CegarLoopForPetriNet]: 20 programPoint places, 14 predicate places. [2024-02-20 12:04:39,412 INFO L507 AbstractCegarLoop]: Abstraction has has 34 places, 59 transitions, 624 flow [2024-02-20 12:04:39,413 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 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) [2024-02-20 12:04:39,413 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:04:39,413 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:04:39,419 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 [2024-02-20 12:04:39,616 WARN L489 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 [2024-02-20 12:04:39,616 INFO L432 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 12:04:39,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:04:39,618 INFO L85 PathProgramCache]: Analyzing trace with hash 2106454794, now seen corresponding path program 1 times [2024-02-20 12:04:39,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-02-20 12:04:39,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [892386156] [2024-02-20 12:04:39,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:04:39,618 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 [2024-02-20 12:04:39,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-02-20 12:04:39,619 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) [2024-02-20 12:04:39,621 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 [2024-02-20 12:04:39,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:04:39,747 INFO L262 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 9 conjunts are in the unsatisfiable core [2024-02-20 12:04:39,749 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:04:39,850 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:04:39,850 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:04:39,938 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:04:39,939 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-02-20 12:04:39,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [892386156] [2024-02-20 12:04:39,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [892386156] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:04:39,939 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-02-20 12:04:39,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2024-02-20 12:04:39,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320829214] [2024-02-20 12:04:39,939 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-02-20 12:04:39,940 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-20 12:04:39,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-02-20 12:04:39,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-20 12:04:39,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-02-20 12:04:39,940 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 19 [2024-02-20 12:04:39,940 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 59 transitions, 624 flow. Second operand has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 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) [2024-02-20 12:04:39,940 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:04:39,941 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 19 [2024-02-20 12:04:39,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:04:40,364 INFO L124 PetriNetUnfolderBase]: 150/285 cut-off events. [2024-02-20 12:04:40,364 INFO L125 PetriNetUnfolderBase]: For 33/33 co-relation queries the response was YES. [2024-02-20 12:04:40,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1766 conditions, 285 events. 150/285 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1022 event pairs, 4 based on Foata normal form. 8/220 useless extension candidates. Maximal degree in co-relation 496. Up to 256 conditions per place. [2024-02-20 12:04:40,369 INFO L140 encePairwiseOnDemand]: 14/19 looper letters, 79 selfloop transitions, 14 changer transitions 37/131 dead transitions. [2024-02-20 12:04:40,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 131 transitions, 1652 flow [2024-02-20 12:04:40,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-20 12:04:40,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-20 12:04:40,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 76 transitions. [2024-02-20 12:04:40,373 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-02-20 12:04:40,374 INFO L308 CegarLoopForPetriNet]: 20 programPoint places, 21 predicate places. [2024-02-20 12:04:40,375 INFO L507 AbstractCegarLoop]: Abstraction has has 41 places, 131 transitions, 1652 flow [2024-02-20 12:04:40,375 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 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) [2024-02-20 12:04:40,375 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:04:40,375 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:04:40,381 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 [2024-02-20 12:04:40,579 WARN L489 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 [2024-02-20 12:04:40,580 INFO L432 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 12:04:40,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:04:40,581 INFO L85 PathProgramCache]: Analyzing trace with hash -1255048793, now seen corresponding path program 1 times [2024-02-20 12:04:40,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-02-20 12:04:40,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1580322757] [2024-02-20 12:04:40,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:04:40,582 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 [2024-02-20 12:04:40,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-02-20 12:04:40,585 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) [2024-02-20 12:04:40,586 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 [2024-02-20 12:04:40,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:04:40,709 INFO L262 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 9 conjunts are in the unsatisfiable core [2024-02-20 12:04:40,710 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:04:40,800 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-20 12:04:40,801 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:04:40,867 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-20 12:04:40,867 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-02-20 12:04:40,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1580322757] [2024-02-20 12:04:40,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1580322757] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:04:40,868 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-02-20 12:04:40,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2024-02-20 12:04:40,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803711359] [2024-02-20 12:04:40,868 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-02-20 12:04:40,868 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-20 12:04:40,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-02-20 12:04:40,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-20 12:04:40,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-02-20 12:04:40,869 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 19 [2024-02-20 12:04:40,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 131 transitions, 1652 flow. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 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) [2024-02-20 12:04:40,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:04:40,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 19 [2024-02-20 12:04:40,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:04:41,273 INFO L124 PetriNetUnfolderBase]: 166/301 cut-off events. [2024-02-20 12:04:41,273 INFO L125 PetriNetUnfolderBase]: For 33/33 co-relation queries the response was YES. [2024-02-20 12:04:41,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2156 conditions, 301 events. 166/301 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1053 event pairs, 4 based on Foata normal form. 0/228 useless extension candidates. Maximal degree in co-relation 610. Up to 272 conditions per place. [2024-02-20 12:04:41,275 INFO L140 encePairwiseOnDemand]: 14/19 looper letters, 95 selfloop transitions, 14 changer transitions 25/135 dead transitions. [2024-02-20 12:04:41,276 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 135 transitions, 1956 flow [2024-02-20 12:04:41,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-20 12:04:41,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-20 12:04:41,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 74 transitions. [2024-02-20 12:04:41,277 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4868421052631579 [2024-02-20 12:04:41,277 INFO L308 CegarLoopForPetriNet]: 20 programPoint places, 28 predicate places. [2024-02-20 12:04:41,278 INFO L507 AbstractCegarLoop]: Abstraction has has 48 places, 135 transitions, 1956 flow [2024-02-20 12:04:41,278 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 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) [2024-02-20 12:04:41,278 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:04:41,278 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:04:41,296 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 (7)] Ended with exit code 0 [2024-02-20 12:04:41,483 WARN L489 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 [2024-02-20 12:04:41,484 INFO L432 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 12:04:41,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:04:41,484 INFO L85 PathProgramCache]: Analyzing trace with hash 519116107, now seen corresponding path program 1 times [2024-02-20 12:04:41,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-02-20 12:04:41,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1142559233] [2024-02-20 12:04:41,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:04:41,485 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 [2024-02-20 12:04:41,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-02-20 12:04:41,487 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) [2024-02-20 12:04:41,489 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 [2024-02-20 12:04:41,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:04:41,758 INFO L262 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 11 conjunts are in the unsatisfiable core [2024-02-20 12:04:41,760 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:04:42,105 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-20 12:04:42,106 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 4 new quantified variables, introduced 6 case distinctions, treesize of input 370 treesize of output 128 [2024-02-20 12:04:42,188 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-20 12:04:42,188 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:04:44,576 INFO L349 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2024-02-20 12:04:44,576 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 611 treesize of output 309 [2024-02-20 12:06:33,758 WARN L293 SmtUtils]: Spent 1.38m on a formula simplification. DAG size of input: 613 DAG size of output: 613 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-02-20 12:10:06,554 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-20 12:10:06,554 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-02-20 12:10:06,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1142559233] [2024-02-20 12:10:06,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1142559233] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:10:06,555 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-02-20 12:10:06,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2024-02-20 12:10:06,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543530631] [2024-02-20 12:10:06,555 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-02-20 12:10:06,556 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-02-20 12:10:06,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-02-20 12:10:06,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-02-20 12:10:06,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=97, Unknown=1, NotChecked=0, Total=132 [2024-02-20 12:10:06,557 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 19 [2024-02-20 12:10:06,557 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 135 transitions, 1956 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) [2024-02-20 12:10:06,557 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:10:06,558 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 19 [2024-02-20 12:10:06,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:10:10,696 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-02-20 12:10:13,279 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-02-20 12:10:15,499 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-02-20 12:10:17,882 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-02-20 12:10:20,857 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.73s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-02-20 12:10:22,783 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-02-20 12:10:24,859 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-02-20 12:10:27,381 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-02-20 12:10:30,476 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-02-20 12:10:33,953 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0, 1] [2024-02-20 12:10:36,718 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-02-20 12:10:39,040 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-02-20 12:10:42,120 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.77s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-02-20 12:10:44,322 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0, 1] [2024-02-20 12:10:45,894 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-02-20 12:10:49,156 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.13s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0, 1] [2024-02-20 12:10:51,144 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-02-20 12:10:52,836 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-02-20 12:10:56,357 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-02-20 12:11:00,232 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.70s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0, 1] [2024-02-20 12:11:02,491 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-02-20 12:11:04,864 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0, 1] [2024-02-20 12:11:09,066 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.89s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2024-02-20 12:11:11,965 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-02-20 12:11:14,486 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-02-20 12:11:14,656 INFO L124 PetriNetUnfolderBase]: 190/368 cut-off events. [2024-02-20 12:11:14,656 INFO L125 PetriNetUnfolderBase]: For 53/53 co-relation queries the response was YES. [2024-02-20 12:11:14,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3002 conditions, 368 events. 190/368 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1437 event pairs, 6 based on Foata normal form. 2/285 useless extension candidates. Maximal degree in co-relation 816. Up to 338 conditions per place. [2024-02-20 12:11:14,661 INFO L140 encePairwiseOnDemand]: 13/19 looper letters, 100 selfloop transitions, 38 changer transitions 35/174 dead transitions. [2024-02-20 12:11:14,661 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 174 transitions, 2887 flow [2024-02-20 12:11:14,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-20 12:11:14,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-20 12:11:14,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 76 transitions. [2024-02-20 12:11:14,663 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2024-02-20 12:11:14,664 INFO L308 CegarLoopForPetriNet]: 20 programPoint places, 34 predicate places. [2024-02-20 12:11:14,664 INFO L507 AbstractCegarLoop]: Abstraction has has 54 places, 174 transitions, 2887 flow [2024-02-20 12:11:14,664 INFO L508 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) [2024-02-20 12:11:14,664 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:11:14,664 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:11:14,671 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 (8)] Forceful destruction successful, exit code 0 [2024-02-20 12:11:14,865 WARN L489 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 [2024-02-20 12:11:14,865 INFO L432 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 12:11:14,866 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:11:14,866 INFO L85 PathProgramCache]: Analyzing trace with hash -1831379705, now seen corresponding path program 2 times [2024-02-20 12:11:14,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-02-20 12:11:14,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [274874985] [2024-02-20 12:11:14,867 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-20 12:11:14,867 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 [2024-02-20 12:11:14,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-02-20 12:11:14,868 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) [2024-02-20 12:11:14,869 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 [2024-02-20 12:11:15,263 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-20 12:11:15,264 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:11:15,276 INFO L262 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 11 conjunts are in the unsatisfiable core [2024-02-20 12:11:15,278 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:11:17,047 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-20 12:11:17,048 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 4 new quantified variables, introduced 6 case distinctions, treesize of input 370 treesize of output 128 [2024-02-20 12:11:19,533 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-20 12:11:19,533 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:11:27,966 INFO L349 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2024-02-20 12:11:27,966 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 611 treesize of output 309 Killed by 15