./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/chl-chromosome-subst.wvr.c --full-output --traceabstraction.positions.where.we.compute.the.hoare.annotation All --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 273a578a 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/chl-chromosome-subst.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 b68e155d55184c39a54e11a2c420443b840324481c8995060134516395f2d120 --traceabstraction.positions.where.we.compute.the.hoare.annotation All --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.owicki-witnesses-273a578-m [2024-02-19 14:26:11,571 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-19 14:26:11,638 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-19 14:26:11,641 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-19 14:26:11,643 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-19 14:26:11,658 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-19 14:26:11,659 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-19 14:26:11,659 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-19 14:26:11,660 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-19 14:26:11,663 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-19 14:26:11,663 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-19 14:26:11,663 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-19 14:26:11,664 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-19 14:26:11,665 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-19 14:26:11,665 INFO L153 SettingsManager]: * Use SBE=true [2024-02-19 14:26:11,665 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-19 14:26:11,665 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-19 14:26:11,666 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-19 14:26:11,666 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-19 14:26:11,666 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-19 14:26:11,666 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-19 14:26:11,667 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-19 14:26:11,667 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-19 14:26:11,667 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-19 14:26:11,667 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-19 14:26:11,668 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-19 14:26:11,668 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-19 14:26:11,668 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-19 14:26:11,669 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-19 14:26:11,669 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-19 14:26:11,670 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-19 14:26:11,670 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-19 14:26:11,670 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-19 14:26:11,670 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-19 14:26:11,670 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-19 14:26:11,671 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-19 14:26:11,671 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-19 14:26:11,671 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-19 14:26:11,671 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-19 14:26:11,672 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-19 14:26:11,672 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-19 14:26:11,672 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-19 14:26:11,672 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-19 14:26:11,672 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b68e155d55184c39a54e11a2c420443b840324481c8995060134516395f2d120 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All [2024-02-19 14:26:11,926 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-19 14:26:11,947 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-19 14:26:11,949 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-19 14:26:11,950 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-19 14:26:11,950 INFO L274 PluginConnector]: CDTParser initialized [2024-02-19 14:26:11,951 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-chromosome-subst.wvr.c [2024-02-19 14:26:12,967 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-19 14:26:13,130 INFO L384 CDTParser]: Found 1 translation units. [2024-02-19 14:26:13,131 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-chromosome-subst.wvr.c [2024-02-19 14:26:13,137 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e5c3ac93/fc65ce9ec3a1408d9c4f50a1f0523fd8/FLAG4eb22239b [2024-02-19 14:26:13,146 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e5c3ac93/fc65ce9ec3a1408d9c4f50a1f0523fd8 [2024-02-19 14:26:13,148 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-19 14:26:13,149 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-02-19 14:26:13,149 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-19 14:26:13,150 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-19 14:26:13,153 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-19 14:26:13,154 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 02:26:13" (1/1) ... [2024-02-19 14:26:13,154 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42a49941 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:26:13, skipping insertion in model container [2024-02-19 14:26:13,154 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 02:26:13" (1/1) ... [2024-02-19 14:26:13,169 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-02-19 14:26:13,295 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/chl-chromosome-subst.wvr.c[3097,3110] [2024-02-19 14:26:13,301 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-19 14:26:13,307 INFO L202 MainTranslator]: Completed pre-run [2024-02-19 14:26:13,334 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/chl-chromosome-subst.wvr.c[3097,3110] [2024-02-19 14:26:13,347 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-19 14:26:13,358 INFO L206 MainTranslator]: Completed translation [2024-02-19 14:26:13,361 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:26:13 WrapperNode [2024-02-19 14:26:13,361 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-19 14:26:13,362 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-19 14:26:13,362 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-19 14:26:13,362 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-19 14:26:13,367 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:26:13" (1/1) ... [2024-02-19 14:26:13,384 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:26:13" (1/1) ... [2024-02-19 14:26:13,415 INFO L138 Inliner]: procedures = 26, calls = 47, calls flagged for inlining = 17, calls inlined = 25, statements flattened = 283 [2024-02-19 14:26:13,416 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-19 14:26:13,417 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-19 14:26:13,417 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-19 14:26:13,417 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-19 14:26:13,425 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:26:13" (1/1) ... [2024-02-19 14:26:13,425 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:26:13" (1/1) ... [2024-02-19 14:26:13,437 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:26:13" (1/1) ... [2024-02-19 14:26:13,461 INFO L175 MemorySlicer]: Split 17 memory accesses to 5 slices as follows [2, 2, 2, 9, 2]. 53 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 6 writes are split as follows [0, 1, 1, 3, 1]. [2024-02-19 14:26:13,461 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:26:13" (1/1) ... [2024-02-19 14:26:13,461 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:26:13" (1/1) ... [2024-02-19 14:26:13,470 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:26:13" (1/1) ... [2024-02-19 14:26:13,485 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:26:13" (1/1) ... [2024-02-19 14:26:13,487 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:26:13" (1/1) ... [2024-02-19 14:26:13,488 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:26:13" (1/1) ... [2024-02-19 14:26:13,490 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-19 14:26:13,494 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-19 14:26:13,494 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-19 14:26:13,494 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-19 14:26:13,495 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:26:13" (1/1) ... [2024-02-19 14:26:13,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-19 14:26:13,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:26:13,533 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) [2024-02-19 14:26:13,553 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 [2024-02-19 14:26:13,576 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-19 14:26:13,576 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-19 14:26:13,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-19 14:26:13,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-19 14:26:13,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-19 14:26:13,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-02-19 14:26:13,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-02-19 14:26:13,578 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-02-19 14:26:13,579 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-02-19 14:26:13,579 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-02-19 14:26:13,579 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-02-19 14:26:13,579 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-02-19 14:26:13,579 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-02-19 14:26:13,579 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-02-19 14:26:13,579 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-02-19 14:26:13,580 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-02-19 14:26:13,580 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-02-19 14:26:13,580 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-02-19 14:26:13,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-19 14:26:13,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-19 14:26:13,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-19 14:26:13,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-02-19 14:26:13,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-02-19 14:26:13,582 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-02-19 14:26:13,582 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-19 14:26:13,582 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-19 14:26:13,582 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-19 14:26:13,584 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-02-19 14:26:13,727 INFO L244 CfgBuilder]: Building ICFG [2024-02-19 14:26:13,728 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-19 14:26:14,132 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-19 14:26:14,132 INFO L293 CfgBuilder]: Performing block encoding [2024-02-19 14:26:14,395 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-19 14:26:14,395 INFO L320 CfgBuilder]: Removed 6 assume(true) statements. [2024-02-19 14:26:14,396 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 02:26:14 BoogieIcfgContainer [2024-02-19 14:26:14,396 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-19 14:26:14,397 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-19 14:26:14,397 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-19 14:26:14,400 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-19 14:26:14,400 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.02 02:26:13" (1/3) ... [2024-02-19 14:26:14,400 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4750b4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 02:26:14, skipping insertion in model container [2024-02-19 14:26:14,401 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:26:13" (2/3) ... [2024-02-19 14:26:14,401 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4750b4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 02:26:14, skipping insertion in model container [2024-02-19 14:26:14,401 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 02:26:14" (3/3) ... [2024-02-19 14:26:14,405 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-chromosome-subst.wvr.c [2024-02-19 14:26:14,428 INFO L221 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-19 14:26:14,444 INFO L180 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-02-19 14:26:14,444 INFO L631 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-19 14:26:14,479 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-02-19 14:26:14,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 37 places, 33 transitions, 87 flow [2024-02-19 14:26:14,523 INFO L124 PetriNetUnfolderBase]: 6/30 cut-off events. [2024-02-19 14:26:14,524 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-02-19 14:26:14,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43 conditions, 30 events. 6/30 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 18 event pairs, 0 based on Foata normal form. 0/23 useless extension candidates. Maximal degree in co-relation 21. Up to 2 conditions per place. [2024-02-19 14:26:14,529 INFO L82 GeneralOperation]: Start removeDead. Operand has 37 places, 33 transitions, 87 flow [2024-02-19 14:26:14,532 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 33 places, 29 transitions, 76 flow [2024-02-19 14:26:14,541 INFO L368 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-19 14:26:14,548 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;@77fe57a9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-19 14:26:14,548 INFO L370 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-02-19 14:26:14,556 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-19 14:26:14,556 INFO L124 PetriNetUnfolderBase]: 6/28 cut-off events. [2024-02-19 14:26:14,556 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-02-19 14:26:14,556 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:26:14,557 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:26:14,557 INFO L432 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 14:26:14,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:26:14,561 INFO L85 PathProgramCache]: Analyzing trace with hash 792045727, now seen corresponding path program 1 times [2024-02-19 14:26:14,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:26:14,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914362045] [2024-02-19 14:26:14,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:26:14,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:26:14,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:26:14,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:26:14,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:26:14,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914362045] [2024-02-19 14:26:14,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914362045] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:26:14,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 14:26:14,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-19 14:26:14,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539698661] [2024-02-19 14:26:14,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:26:14,973 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-19 14:26:14,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:26:14,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-19 14:26:14,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-19 14:26:14,999 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-02-19 14:26:15,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 29 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 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) [2024-02-19 14:26:15,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:26:15,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-02-19 14:26:15,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:26:15,157 INFO L124 PetriNetUnfolderBase]: 223/335 cut-off events. [2024-02-19 14:26:15,157 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-02-19 14:26:15,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 713 conditions, 335 events. 223/335 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 773 event pairs, 138 based on Foata normal form. 0/250 useless extension candidates. Maximal degree in co-relation 534. Up to 332 conditions per place. [2024-02-19 14:26:15,162 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 25 selfloop transitions, 6 changer transitions 0/32 dead transitions. [2024-02-19 14:26:15,162 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 32 transitions, 144 flow [2024-02-19 14:26:15,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-19 14:26:15,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-19 14:26:15,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 46 transitions. [2024-02-19 14:26:15,171 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.46464646464646464 [2024-02-19 14:26:15,174 INFO L308 CegarLoopForPetriNet]: 33 programPoint places, 2 predicate places. [2024-02-19 14:26:15,174 INFO L507 AbstractCegarLoop]: Abstraction has has 35 places, 32 transitions, 144 flow [2024-02-19 14:26:15,175 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 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) [2024-02-19 14:26:15,175 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:26:15,175 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:26:15,175 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-19 14:26:15,176 INFO L432 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 14:26:15,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:26:15,177 INFO L85 PathProgramCache]: Analyzing trace with hash 176250298, now seen corresponding path program 1 times [2024-02-19 14:26:15,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:26:15,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621868194] [2024-02-19 14:26:15,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:26:15,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:26:15,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:26:15,358 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-19 14:26:15,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:26:15,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621868194] [2024-02-19 14:26:15,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621868194] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:26:15,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 14:26:15,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-19 14:26:15,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247166110] [2024-02-19 14:26:15,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:26:15,361 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-19 14:26:15,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:26:15,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-19 14:26:15,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-02-19 14:26:15,363 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-02-19 14:26:15,363 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 32 transitions, 144 flow. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 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) [2024-02-19 14:26:15,363 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:26:15,363 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-02-19 14:26:15,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:26:15,493 INFO L124 PetriNetUnfolderBase]: 383/572 cut-off events. [2024-02-19 14:26:15,493 INFO L125 PetriNetUnfolderBase]: For 55/55 co-relation queries the response was YES. [2024-02-19 14:26:15,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1788 conditions, 572 events. 383/572 cut-off events. For 55/55 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1718 event pairs, 138 based on Foata normal form. 1/420 useless extension candidates. Maximal degree in co-relation 1315. Up to 569 conditions per place. [2024-02-19 14:26:15,496 INFO L140 encePairwiseOnDemand]: 30/33 looper letters, 41 selfloop transitions, 2 changer transitions 6/50 dead transitions. [2024-02-19 14:26:15,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 50 transitions, 329 flow [2024-02-19 14:26:15,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-19 14:26:15,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-19 14:26:15,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 59 transitions. [2024-02-19 14:26:15,498 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5959595959595959 [2024-02-19 14:26:15,498 INFO L308 CegarLoopForPetriNet]: 33 programPoint places, 4 predicate places. [2024-02-19 14:26:15,499 INFO L507 AbstractCegarLoop]: Abstraction has has 37 places, 50 transitions, 329 flow [2024-02-19 14:26:15,499 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 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) [2024-02-19 14:26:15,499 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:26:15,499 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:26:15,499 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-19 14:26:15,499 INFO L432 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 14:26:15,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:26:15,500 INFO L85 PathProgramCache]: Analyzing trace with hash -2126942885, now seen corresponding path program 1 times [2024-02-19 14:26:15,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:26:15,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836993156] [2024-02-19 14:26:15,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:26:15,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:26:15,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:26:15,593 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-19 14:26:15,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:26:15,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836993156] [2024-02-19 14:26:15,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836993156] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:26:15,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1090173530] [2024-02-19 14:26:15,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:26:15,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:26:15,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:26:15,609 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) [2024-02-19 14:26:15,636 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-02-19 14:26:15,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:26:15,715 INFO L262 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 5 conjunts are in the unsatisfiable core [2024-02-19 14:26:15,718 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:26:15,751 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-19 14:26:15,751 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:26:15,768 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-19 14:26:15,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1090173530] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 14:26:15,769 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 14:26:15,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 8 [2024-02-19 14:26:15,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331182493] [2024-02-19 14:26:15,769 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 14:26:15,769 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-19 14:26:15,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:26:15,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-19 14:26:15,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2024-02-19 14:26:15,770 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-02-19 14:26:15,771 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 50 transitions, 329 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 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) [2024-02-19 14:26:15,771 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:26:15,771 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-02-19 14:26:15,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:26:15,895 INFO L124 PetriNetUnfolderBase]: 383/581 cut-off events. [2024-02-19 14:26:15,895 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2024-02-19 14:26:15,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2396 conditions, 581 events. 383/581 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1720 event pairs, 138 based on Foata normal form. 0/428 useless extension candidates. Maximal degree in co-relation 1740. Up to 578 conditions per place. [2024-02-19 14:26:15,898 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 37 selfloop transitions, 15 changer transitions 6/59 dead transitions. [2024-02-19 14:26:15,898 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 59 transitions, 499 flow [2024-02-19 14:26:15,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-19 14:26:15,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-19 14:26:15,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 73 transitions. [2024-02-19 14:26:15,899 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.3686868686868687 [2024-02-19 14:26:15,900 INFO L308 CegarLoopForPetriNet]: 33 programPoint places, 9 predicate places. [2024-02-19 14:26:15,900 INFO L507 AbstractCegarLoop]: Abstraction has has 42 places, 59 transitions, 499 flow [2024-02-19 14:26:15,900 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 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) [2024-02-19 14:26:15,901 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:26:15,901 INFO L234 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:26:15,927 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-02-19 14:26:16,113 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:26:16,113 INFO L432 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 14:26:16,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:26:16,114 INFO L85 PathProgramCache]: Analyzing trace with hash 1555990258, now seen corresponding path program 2 times [2024-02-19 14:26:16,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:26:16,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206583674] [2024-02-19 14:26:16,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:26:16,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:26:16,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:26:16,337 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-02-19 14:26:16,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:26:16,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206583674] [2024-02-19 14:26:16,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206583674] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:26:16,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [532819626] [2024-02-19 14:26:16,338 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-19 14:26:16,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:26:16,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:26:16,339 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) [2024-02-19 14:26:16,364 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-02-19 14:26:16,445 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-02-19 14:26:16,445 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 14:26:16,446 INFO L262 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 9 conjunts are in the unsatisfiable core [2024-02-19 14:26:16,448 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:26:16,512 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-02-19 14:26:16,512 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-02-19 14:26:16,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [532819626] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:26:16,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-02-19 14:26:16,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2024-02-19 14:26:16,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597475411] [2024-02-19 14:26:16,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:26:16,513 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-19 14:26:16,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:26:16,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-19 14:26:16,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-02-19 14:26:16,513 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-02-19 14:26:16,514 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 59 transitions, 499 flow. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 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) [2024-02-19 14:26:16,514 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:26:16,514 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-02-19 14:26:16,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:26:16,728 INFO L124 PetriNetUnfolderBase]: 773/1157 cut-off events. [2024-02-19 14:26:16,729 INFO L125 PetriNetUnfolderBase]: For 147/147 co-relation queries the response was YES. [2024-02-19 14:26:16,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5907 conditions, 1157 events. 773/1157 cut-off events. For 147/147 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 4322 event pairs, 138 based on Foata normal form. 1/813 useless extension candidates. Maximal degree in co-relation 4235. Up to 1153 conditions per place. [2024-02-19 14:26:16,734 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 86 selfloop transitions, 10 changer transitions 19/116 dead transitions. [2024-02-19 14:26:16,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 116 transitions, 1227 flow [2024-02-19 14:26:16,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-19 14:26:16,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-19 14:26:16,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 75 transitions. [2024-02-19 14:26:16,735 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5681818181818182 [2024-02-19 14:26:16,735 INFO L308 CegarLoopForPetriNet]: 33 programPoint places, 12 predicate places. [2024-02-19 14:26:16,735 INFO L507 AbstractCegarLoop]: Abstraction has has 45 places, 116 transitions, 1227 flow [2024-02-19 14:26:16,735 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 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) [2024-02-19 14:26:16,735 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:26:16,735 INFO L234 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:26:16,758 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-02-19 14:26:16,947 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-02-19 14:26:16,947 INFO L432 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 14:26:16,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:26:16,948 INFO L85 PathProgramCache]: Analyzing trace with hash 1405600422, now seen corresponding path program 3 times [2024-02-19 14:26:16,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:26:16,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191704806] [2024-02-19 14:26:16,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:26:16,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:26:16,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:26:17,089 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-02-19 14:26:17,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:26:17,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191704806] [2024-02-19 14:26:17,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191704806] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:26:17,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [719381742] [2024-02-19 14:26:17,090 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-02-19 14:26:17,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:26:17,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:26:17,091 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) [2024-02-19 14:26:17,113 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-02-19 14:26:17,201 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-02-19 14:26:17,201 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 14:26:17,202 INFO L262 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 9 conjunts are in the unsatisfiable core [2024-02-19 14:26:17,203 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:26:17,275 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-02-19 14:26:17,275 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-02-19 14:26:17,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [719381742] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:26:17,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-02-19 14:26:17,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2024-02-19 14:26:17,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641063355] [2024-02-19 14:26:17,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:26:17,276 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-19 14:26:17,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:26:17,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-19 14:26:17,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-02-19 14:26:17,277 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-02-19 14:26:17,277 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 116 transitions, 1227 flow. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 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) [2024-02-19 14:26:17,277 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:26:17,277 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-02-19 14:26:17,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:26:17,501 INFO L124 PetriNetUnfolderBase]: 1119/1665 cut-off events. [2024-02-19 14:26:17,501 INFO L125 PetriNetUnfolderBase]: For 225/225 co-relation queries the response was YES. [2024-02-19 14:26:17,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10138 conditions, 1665 events. 1119/1665 cut-off events. For 225/225 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 6793 event pairs, 138 based on Foata normal form. 1/1147 useless extension candidates. Maximal degree in co-relation 7170. Up to 1660 conditions per place. [2024-02-19 14:26:17,511 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 122 selfloop transitions, 14 changer transitions 32/169 dead transitions. [2024-02-19 14:26:17,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 169 transitions, 2129 flow [2024-02-19 14:26:17,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-19 14:26:17,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-19 14:26:17,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 73 transitions. [2024-02-19 14:26:17,512 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.553030303030303 [2024-02-19 14:26:17,513 INFO L308 CegarLoopForPetriNet]: 33 programPoint places, 15 predicate places. [2024-02-19 14:26:17,513 INFO L507 AbstractCegarLoop]: Abstraction has has 48 places, 169 transitions, 2129 flow [2024-02-19 14:26:17,513 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 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) [2024-02-19 14:26:17,513 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:26:17,513 INFO L234 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:26:17,545 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-02-19 14:26:17,725 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:26:17,725 INFO L432 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 14:26:17,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:26:17,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1035685418, now seen corresponding path program 1 times [2024-02-19 14:26:17,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:26:17,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147564908] [2024-02-19 14:26:17,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:26:17,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:26:17,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:26:18,022 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-02-19 14:26:18,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:26:18,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147564908] [2024-02-19 14:26:18,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147564908] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:26:18,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [73960197] [2024-02-19 14:26:18,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:26:18,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:26:18,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:26:18,024 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) [2024-02-19 14:26:18,034 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-02-19 14:26:18,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:26:18,164 INFO L262 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 8 conjunts are in the unsatisfiable core [2024-02-19 14:26:18,165 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:26:18,216 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-02-19 14:26:18,216 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:26:18,270 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-02-19 14:26:18,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [73960197] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 14:26:18,270 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 14:26:18,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 17 [2024-02-19 14:26:18,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984375782] [2024-02-19 14:26:18,270 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 14:26:18,272 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-02-19 14:26:18,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:26:18,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-02-19 14:26:18,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=166, Unknown=0, NotChecked=0, Total=272 [2024-02-19 14:26:18,274 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-02-19 14:26:18,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 169 transitions, 2129 flow. Second operand has 17 states, 17 states have (on average 6.705882352941177) internal successors, (114), 17 states have internal predecessors, (114), 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) [2024-02-19 14:26:18,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:26:18,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-02-19 14:26:18,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:26:18,506 INFO L124 PetriNetUnfolderBase]: 1119/1668 cut-off events. [2024-02-19 14:26:18,506 INFO L125 PetriNetUnfolderBase]: For 219/219 co-relation queries the response was YES. [2024-02-19 14:26:18,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11822 conditions, 1668 events. 1119/1668 cut-off events. For 219/219 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 6790 event pairs, 138 based on Foata normal form. 0/1149 useless extension candidates. Maximal degree in co-relation 8355. Up to 1663 conditions per place. [2024-02-19 14:26:18,516 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 121 selfloop transitions, 18 changer transitions 32/172 dead transitions. [2024-02-19 14:26:18,516 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 172 transitions, 2507 flow [2024-02-19 14:26:18,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-19 14:26:18,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-19 14:26:18,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 74 transitions. [2024-02-19 14:26:18,517 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.3203463203463203 [2024-02-19 14:26:18,518 INFO L308 CegarLoopForPetriNet]: 33 programPoint places, 21 predicate places. [2024-02-19 14:26:18,518 INFO L507 AbstractCegarLoop]: Abstraction has has 54 places, 172 transitions, 2507 flow [2024-02-19 14:26:18,518 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.705882352941177) internal successors, (114), 17 states have internal predecessors, (114), 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) [2024-02-19 14:26:18,518 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:26:18,518 INFO L234 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:26:18,537 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-02-19 14:26:18,730 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:26:18,731 INFO L432 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 14:26:18,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:26:18,731 INFO L85 PathProgramCache]: Analyzing trace with hash -1230888111, now seen corresponding path program 2 times [2024-02-19 14:26:18,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:26:18,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854754837] [2024-02-19 14:26:18,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:26:18,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:26:18,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:26:19,043 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-02-19 14:26:19,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:26:19,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854754837] [2024-02-19 14:26:19,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854754837] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:26:19,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [743419021] [2024-02-19 14:26:19,044 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-19 14:26:19,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:26:19,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:26:19,045 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) [2024-02-19 14:26:19,066 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-02-19 14:26:19,189 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-19 14:26:19,190 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 14:26:19,192 INFO L262 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 7 conjunts are in the unsatisfiable core [2024-02-19 14:26:19,193 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:26:19,235 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-02-19 14:26:19,235 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:26:19,277 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-02-19 14:26:19,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [743419021] provided 1 perfect and 1 imperfect interpolant sequences [2024-02-19 14:26:19,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-02-19 14:26:19,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 10 [2024-02-19 14:26:19,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040042562] [2024-02-19 14:26:19,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:26:19,278 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-19 14:26:19,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:26:19,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-19 14:26:19,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-02-19 14:26:19,279 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-02-19 14:26:19,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 172 transitions, 2507 flow. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 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) [2024-02-19 14:26:19,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:26:19,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-02-19 14:26:19,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:26:19,555 INFO L124 PetriNetUnfolderBase]: 1189/1770 cut-off events. [2024-02-19 14:26:19,555 INFO L125 PetriNetUnfolderBase]: For 251/251 co-relation queries the response was YES. [2024-02-19 14:26:19,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14310 conditions, 1770 events. 1189/1770 cut-off events. For 251/251 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 7306 event pairs, 28 based on Foata normal form. 0/1229 useless extension candidates. Maximal degree in co-relation 10100. Up to 1765 conditions per place. [2024-02-19 14:26:19,569 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 169 selfloop transitions, 16 changer transitions 43/229 dead transitions. [2024-02-19 14:26:19,570 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 229 transitions, 3791 flow [2024-02-19 14:26:19,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-19 14:26:19,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-19 14:26:19,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 88 transitions. [2024-02-19 14:26:19,571 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2024-02-19 14:26:19,572 INFO L308 CegarLoopForPetriNet]: 33 programPoint places, 25 predicate places. [2024-02-19 14:26:19,572 INFO L507 AbstractCegarLoop]: Abstraction has has 58 places, 229 transitions, 3791 flow [2024-02-19 14:26:19,573 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 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) [2024-02-19 14:26:19,573 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:26:19,573 INFO L234 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:26:19,600 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-02-19 14:26:19,786 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:26:19,787 INFO L432 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 14:26:19,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:26:19,787 INFO L85 PathProgramCache]: Analyzing trace with hash -676740959, now seen corresponding path program 1 times [2024-02-19 14:26:19,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:26:19,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668030226] [2024-02-19 14:26:19,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:26:19,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:26:19,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:26:20,062 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-02-19 14:26:20,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:26:20,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668030226] [2024-02-19 14:26:20,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668030226] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:26:20,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1816445803] [2024-02-19 14:26:20,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:26:20,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:26:20,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:26:20,066 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) [2024-02-19 14:26:20,084 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-02-19 14:26:20,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:26:20,211 INFO L262 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 8 conjunts are in the unsatisfiable core [2024-02-19 14:26:20,213 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:26:20,283 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-02-19 14:26:20,283 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:26:20,344 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-02-19 14:26:20,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1816445803] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 14:26:20,344 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 14:26:20,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2024-02-19 14:26:20,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948878018] [2024-02-19 14:26:20,345 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 14:26:20,345 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-19 14:26:20,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:26:20,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-19 14:26:20,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-02-19 14:26:20,346 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-02-19 14:26:20,346 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 229 transitions, 3791 flow. Second operand has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 9 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) [2024-02-19 14:26:20,346 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:26:20,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-02-19 14:26:20,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:26:21,013 INFO L124 PetriNetUnfolderBase]: 2701/4005 cut-off events. [2024-02-19 14:26:21,013 INFO L125 PetriNetUnfolderBase]: For 620/620 co-relation queries the response was YES. [2024-02-19 14:26:21,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36412 conditions, 4005 events. 2701/4005 cut-off events. For 620/620 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 19289 event pairs, 28 based on Foata normal form. 9/2747 useless extension candidates. Maximal degree in co-relation 26917. Up to 4000 conditions per place. [2024-02-19 14:26:21,036 INFO L140 encePairwiseOnDemand]: 29/33 looper letters, 313 selfloop transitions, 40 changer transitions 310/664 dead transitions. [2024-02-19 14:26:21,036 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 664 transitions, 12320 flow [2024-02-19 14:26:21,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-19 14:26:21,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-19 14:26:21,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 172 transitions. [2024-02-19 14:26:21,037 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5791245791245792 [2024-02-19 14:26:21,037 INFO L308 CegarLoopForPetriNet]: 33 programPoint places, 33 predicate places. [2024-02-19 14:26:21,037 INFO L507 AbstractCegarLoop]: Abstraction has has 66 places, 664 transitions, 12320 flow [2024-02-19 14:26:21,037 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 9 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) [2024-02-19 14:26:21,037 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:26:21,037 INFO L234 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:26:21,064 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-02-19 14:26:21,249 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:26:21,250 INFO L432 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 14:26:21,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:26:21,250 INFO L85 PathProgramCache]: Analyzing trace with hash -792538028, now seen corresponding path program 2 times [2024-02-19 14:26:21,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:26:21,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114653405] [2024-02-19 14:26:21,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:26:21,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:26:21,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:26:21,519 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-02-19 14:26:21,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:26:21,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114653405] [2024-02-19 14:26:21,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114653405] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:26:21,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1208089770] [2024-02-19 14:26:21,520 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-19 14:26:21,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:26:21,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:26:21,521 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) [2024-02-19 14:26:21,545 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-02-19 14:26:21,696 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-19 14:26:21,696 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 14:26:21,699 INFO L262 TraceCheckSpWp]: Trace formula consists of 471 conjuncts, 7 conjunts are in the unsatisfiable core [2024-02-19 14:26:21,704 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:26:21,743 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-02-19 14:26:21,743 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:26:21,782 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-02-19 14:26:21,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1208089770] provided 1 perfect and 1 imperfect interpolant sequences [2024-02-19 14:26:21,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-02-19 14:26:21,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8, 5] total 13 [2024-02-19 14:26:21,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985795204] [2024-02-19 14:26:21,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:26:21,785 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-19 14:26:21,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:26:21,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-19 14:26:21,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-02-19 14:26:21,786 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-02-19 14:26:21,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 664 transitions, 12320 flow. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 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) [2024-02-19 14:26:21,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:26:21,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-02-19 14:26:21,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:26:22,542 INFO L124 PetriNetUnfolderBase]: 2851/4219 cut-off events. [2024-02-19 14:26:22,542 INFO L125 PetriNetUnfolderBase]: For 707/707 co-relation queries the response was YES. [2024-02-19 14:26:22,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42565 conditions, 4219 events. 2851/4219 cut-off events. For 707/707 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 20170 event pairs, 10 based on Foata normal form. 0/2900 useless extension candidates. Maximal degree in co-relation 31632. Up to 4214 conditions per place. [2024-02-19 14:26:22,570 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 401 selfloop transitions, 52 changer transitions 410/864 dead transitions. [2024-02-19 14:26:22,570 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 864 transitions, 17736 flow [2024-02-19 14:26:22,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-19 14:26:22,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-19 14:26:22,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 84 transitions. [2024-02-19 14:26:22,571 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.509090909090909 [2024-02-19 14:26:22,571 INFO L308 CegarLoopForPetriNet]: 33 programPoint places, 37 predicate places. [2024-02-19 14:26:22,571 INFO L507 AbstractCegarLoop]: Abstraction has has 70 places, 864 transitions, 17736 flow [2024-02-19 14:26:22,571 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 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) [2024-02-19 14:26:22,572 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:26:22,572 INFO L234 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:26:22,586 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-02-19 14:26:22,785 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:26:22,785 INFO L432 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 14:26:22,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:26:22,786 INFO L85 PathProgramCache]: Analyzing trace with hash 150097700, now seen corresponding path program 3 times [2024-02-19 14:26:22,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:26:22,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647131601] [2024-02-19 14:26:22,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:26:22,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:26:22,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:26:23,044 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-02-19 14:26:23,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:26:23,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647131601] [2024-02-19 14:26:23,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647131601] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:26:23,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [930139280] [2024-02-19 14:26:23,045 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-02-19 14:26:23,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:26:23,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:26:23,046 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) [2024-02-19 14:26:23,070 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-02-19 14:26:23,191 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-02-19 14:26:23,192 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 14:26:23,193 INFO L262 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 7 conjunts are in the unsatisfiable core [2024-02-19 14:26:23,194 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:26:23,222 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-02-19 14:26:23,222 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-02-19 14:26:23,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [930139280] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:26:23,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-02-19 14:26:23,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2024-02-19 14:26:23,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705539013] [2024-02-19 14:26:23,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:26:23,223 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-19 14:26:23,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:26:23,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-19 14:26:23,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-02-19 14:26:23,223 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-02-19 14:26:23,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 864 transitions, 17736 flow. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 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) [2024-02-19 14:26:23,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:26:23,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-02-19 14:26:23,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:26:24,083 INFO L124 PetriNetUnfolderBase]: 2915/4372 cut-off events. [2024-02-19 14:26:24,083 INFO L125 PetriNetUnfolderBase]: For 745/745 co-relation queries the response was YES. [2024-02-19 14:26:24,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48490 conditions, 4372 events. 2915/4372 cut-off events. For 745/745 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 21665 event pairs, 10 based on Foata normal form. 0/3033 useless extension candidates. Maximal degree in co-relation 35837. Up to 4367 conditions per place. [2024-02-19 14:26:24,109 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 453 selfloop transitions, 55 changer transitions 595/1104 dead transitions. [2024-02-19 14:26:24,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 1104 transitions, 24871 flow [2024-02-19 14:26:24,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-19 14:26:24,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-19 14:26:24,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 87 transitions. [2024-02-19 14:26:24,111 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5272727272727272 [2024-02-19 14:26:24,111 INFO L308 CegarLoopForPetriNet]: 33 programPoint places, 41 predicate places. [2024-02-19 14:26:24,111 INFO L507 AbstractCegarLoop]: Abstraction has has 74 places, 1104 transitions, 24871 flow [2024-02-19 14:26:24,112 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 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) [2024-02-19 14:26:24,112 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:26:24,112 INFO L234 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:26:24,124 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-02-19 14:26:24,324 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,SelfDestructingSolverStorable9 [2024-02-19 14:26:24,324 INFO L432 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 14:26:24,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:26:24,325 INFO L85 PathProgramCache]: Analyzing trace with hash -417410026, now seen corresponding path program 3 times [2024-02-19 14:26:24,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:26:24,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745245969] [2024-02-19 14:26:24,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:26:24,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:26:24,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:26:24,580 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-02-19 14:26:24,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:26:24,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745245969] [2024-02-19 14:26:24,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745245969] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:26:24,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1116504598] [2024-02-19 14:26:24,581 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-02-19 14:26:24,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:26:24,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:26:24,582 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) [2024-02-19 14:26:24,606 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-02-19 14:26:24,731 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-02-19 14:26:24,731 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 14:26:24,744 INFO L262 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 7 conjunts are in the unsatisfiable core [2024-02-19 14:26:24,746 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:26:24,772 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-02-19 14:26:24,772 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-02-19 14:26:24,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1116504598] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:26:24,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-02-19 14:26:24,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2024-02-19 14:26:24,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251861612] [2024-02-19 14:26:24,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:26:24,774 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-19 14:26:24,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:26:24,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-19 14:26:24,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-02-19 14:26:24,775 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-02-19 14:26:24,775 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 1104 transitions, 24871 flow. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 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) [2024-02-19 14:26:24,775 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:26:24,775 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-02-19 14:26:24,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:26:25,735 INFO L124 PetriNetUnfolderBase]: 2883/4340 cut-off events. [2024-02-19 14:26:25,736 INFO L125 PetriNetUnfolderBase]: For 765/765 co-relation queries the response was YES. [2024-02-19 14:26:25,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52476 conditions, 4340 events. 2883/4340 cut-off events. For 765/765 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 21603 event pairs, 52 based on Foata normal form. 0/3033 useless extension candidates. Maximal degree in co-relation 38762. Up to 4335 conditions per place. [2024-02-19 14:26:25,761 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 448 selfloop transitions, 55 changer transitions 715/1219 dead transitions. [2024-02-19 14:26:25,761 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 1219 transitions, 29912 flow [2024-02-19 14:26:25,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-19 14:26:25,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-19 14:26:25,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 88 transitions. [2024-02-19 14:26:25,762 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2024-02-19 14:26:25,763 INFO L308 CegarLoopForPetriNet]: 33 programPoint places, 45 predicate places. [2024-02-19 14:26:25,763 INFO L507 AbstractCegarLoop]: Abstraction has has 78 places, 1219 transitions, 29912 flow [2024-02-19 14:26:25,763 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 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) [2024-02-19 14:26:25,763 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:26:25,763 INFO L234 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:26:25,776 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-02-19 14:26:25,975 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:26:25,976 INFO L432 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 14:26:25,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:26:25,977 INFO L85 PathProgramCache]: Analyzing trace with hash -307055944, now seen corresponding path program 4 times [2024-02-19 14:26:25,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:26:25,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027685928] [2024-02-19 14:26:25,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:26:25,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:26:26,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:26:26,244 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-02-19 14:26:26,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:26:26,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027685928] [2024-02-19 14:26:26,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027685928] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:26:26,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1661343871] [2024-02-19 14:26:26,246 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-02-19 14:26:26,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:26:26,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:26:26,261 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) [2024-02-19 14:26:26,287 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-02-19 14:26:26,427 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-02-19 14:26:26,427 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 14:26:26,429 INFO L262 TraceCheckSpWp]: Trace formula consists of 471 conjuncts, 14 conjunts are in the unsatisfiable core [2024-02-19 14:26:26,432 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:26:26,532 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-02-19 14:26:26,532 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:26:26,617 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-02-19 14:26:26,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1661343871] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 14:26:26,617 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 14:26:26,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13 [2024-02-19 14:26:26,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088962635] [2024-02-19 14:26:26,618 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 14:26:26,618 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-02-19 14:26:26,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:26:26,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-02-19 14:26:26,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2024-02-19 14:26:26,619 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-02-19 14:26:26,620 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 1219 transitions, 29912 flow. Second operand has 13 states, 13 states have (on average 7.615384615384615) internal successors, (99), 13 states have internal predecessors, (99), 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) [2024-02-19 14:26:26,620 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:26:26,620 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-02-19 14:26:26,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:26:27,981 INFO L124 PetriNetUnfolderBase]: 3421/5148 cut-off events. [2024-02-19 14:26:27,982 INFO L125 PetriNetUnfolderBase]: For 897/897 co-relation queries the response was YES. [2024-02-19 14:26:27,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67398 conditions, 5148 events. 3421/5148 cut-off events. For 897/897 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 26381 event pairs, 60 based on Foata normal form. 3/3594 useless extension candidates. Maximal degree in co-relation 51596. Up to 5143 conditions per place. [2024-02-19 14:26:28,013 INFO L140 encePairwiseOnDemand]: 29/33 looper letters, 493 selfloop transitions, 90 changer transitions 901/1485 dead transitions. [2024-02-19 14:26:28,013 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 1485 transitions, 39405 flow [2024-02-19 14:26:28,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-02-19 14:26:28,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-02-19 14:26:28,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 207 transitions. [2024-02-19 14:26:28,014 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5702479338842975 [2024-02-19 14:26:28,015 INFO L308 CegarLoopForPetriNet]: 33 programPoint places, 55 predicate places. [2024-02-19 14:26:28,015 INFO L507 AbstractCegarLoop]: Abstraction has has 88 places, 1485 transitions, 39405 flow [2024-02-19 14:26:28,015 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.615384615384615) internal successors, (99), 13 states have internal predecessors, (99), 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) [2024-02-19 14:26:28,015 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:26:28,015 INFO L234 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:26:28,028 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-02-19 14:26:28,227 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,SelfDestructingSolverStorable11 [2024-02-19 14:26:28,227 INFO L432 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 14:26:28,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:26:28,228 INFO L85 PathProgramCache]: Analyzing trace with hash -540379579, now seen corresponding path program 5 times [2024-02-19 14:26:28,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:26:28,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915517153] [2024-02-19 14:26:28,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:26:28,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:26:28,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:26:28,408 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-02-19 14:26:28,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:26:28,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915517153] [2024-02-19 14:26:28,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915517153] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:26:28,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [873292793] [2024-02-19 14:26:28,409 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-02-19 14:26:28,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:26:28,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:26:28,416 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) [2024-02-19 14:26:28,424 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-02-19 14:26:28,878 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-02-19 14:26:28,878 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 14:26:28,882 INFO L262 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 7 conjunts are in the unsatisfiable core [2024-02-19 14:26:28,883 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:26:28,937 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-02-19 14:26:28,937 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:26:28,990 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-02-19 14:26:28,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [873292793] provided 1 perfect and 1 imperfect interpolant sequences [2024-02-19 14:26:28,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-02-19 14:26:28,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 11 [2024-02-19 14:26:28,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98635811] [2024-02-19 14:26:28,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:26:28,992 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-19 14:26:28,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:26:28,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-19 14:26:28,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2024-02-19 14:26:28,993 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-02-19 14:26:28,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 1485 transitions, 39405 flow. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 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) [2024-02-19 14:26:28,994 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:26:28,994 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-02-19 14:26:28,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:26:30,541 INFO L124 PetriNetUnfolderBase]: 3725/5636 cut-off events. [2024-02-19 14:26:30,541 INFO L125 PetriNetUnfolderBase]: For 1011/1011 co-relation queries the response was YES. [2024-02-19 14:26:30,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79405 conditions, 5636 events. 3725/5636 cut-off events. For 1011/1011 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 29628 event pairs, 60 based on Foata normal form. 0/3943 useless extension candidates. Maximal degree in co-relation 60659. Up to 5630 conditions per place. [2024-02-19 14:26:30,606 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 577 selfloop transitions, 72 changer transitions 974/1624 dead transitions. [2024-02-19 14:26:30,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 1624 transitions, 46337 flow [2024-02-19 14:26:30,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-19 14:26:30,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-19 14:26:30,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 92 transitions. [2024-02-19 14:26:30,607 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5575757575757576 [2024-02-19 14:26:30,608 INFO L308 CegarLoopForPetriNet]: 33 programPoint places, 59 predicate places. [2024-02-19 14:26:30,608 INFO L507 AbstractCegarLoop]: Abstraction has has 92 places, 1624 transitions, 46337 flow [2024-02-19 14:26:30,608 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 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) [2024-02-19 14:26:30,608 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:26:30,608 INFO L234 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:26:30,624 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-02-19 14:26:30,820 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,SelfDestructingSolverStorable12 [2024-02-19 14:26:30,821 INFO L432 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 14:26:30,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:26:30,821 INFO L85 PathProgramCache]: Analyzing trace with hash -639435387, now seen corresponding path program 4 times [2024-02-19 14:26:30,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:26:30,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997991992] [2024-02-19 14:26:30,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:26:30,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:26:30,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:26:30,977 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-02-19 14:26:30,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:26:30,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997991992] [2024-02-19 14:26:30,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997991992] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:26:30,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1085455989] [2024-02-19 14:26:30,978 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-02-19 14:26:30,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:26:30,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:26:30,980 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) [2024-02-19 14:26:30,982 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-02-19 14:26:31,152 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-02-19 14:26:31,152 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 14:26:31,154 INFO L262 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 7 conjunts are in the unsatisfiable core [2024-02-19 14:26:31,155 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:26:31,175 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-02-19 14:26:31,176 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:26:31,213 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-02-19 14:26:31,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1085455989] provided 1 perfect and 1 imperfect interpolant sequences [2024-02-19 14:26:31,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-02-19 14:26:31,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 10 [2024-02-19 14:26:31,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505938499] [2024-02-19 14:26:31,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:26:31,214 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-19 14:26:31,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:26:31,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-19 14:26:31,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-02-19 14:26:31,215 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-02-19 14:26:31,215 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 1624 transitions, 46337 flow. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 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) [2024-02-19 14:26:31,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:26:31,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-02-19 14:26:31,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:26:33,071 INFO L124 PetriNetUnfolderBase]: 4105/6192 cut-off events. [2024-02-19 14:26:33,072 INFO L125 PetriNetUnfolderBase]: For 1094/1094 co-relation queries the response was YES. [2024-02-19 14:26:33,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93414 conditions, 6192 events. 4105/6192 cut-off events. For 1094/1094 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 32841 event pairs, 10 based on Foata normal form. 0/4375 useless extension candidates. Maximal degree in co-relation 71995. Up to 6186 conditions per place. [2024-02-19 14:26:33,108 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 647 selfloop transitions, 74 changer transitions 1056/1778 dead transitions. [2024-02-19 14:26:33,108 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 1778 transitions, 54275 flow [2024-02-19 14:26:33,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-19 14:26:33,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-19 14:26:33,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 84 transitions. [2024-02-19 14:26:33,109 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.509090909090909 [2024-02-19 14:26:33,110 INFO L308 CegarLoopForPetriNet]: 33 programPoint places, 63 predicate places. [2024-02-19 14:26:33,110 INFO L507 AbstractCegarLoop]: Abstraction has has 96 places, 1778 transitions, 54275 flow [2024-02-19 14:26:33,110 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 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) [2024-02-19 14:26:33,110 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:26:33,111 INFO L234 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:26:33,125 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-02-19 14:26:33,323 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,SelfDestructingSolverStorable13 [2024-02-19 14:26:33,323 INFO L432 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 14:26:33,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:26:33,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1248682377, now seen corresponding path program 6 times [2024-02-19 14:26:33,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:26:33,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484670034] [2024-02-19 14:26:33,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:26:33,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:26:33,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:26:33,498 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-02-19 14:26:33,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:26:33,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484670034] [2024-02-19 14:26:33,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484670034] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:26:33,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 14:26:33,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-19 14:26:33,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225571287] [2024-02-19 14:26:33,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:26:33,499 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-19 14:26:33,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:26:33,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-19 14:26:33,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-02-19 14:26:33,500 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-02-19 14:26:33,500 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 1778 transitions, 54275 flow. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 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) [2024-02-19 14:26:33,500 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:26:33,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-02-19 14:26:33,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:26:35,559 INFO L124 PetriNetUnfolderBase]: 3929/5908 cut-off events. [2024-02-19 14:26:35,559 INFO L125 PetriNetUnfolderBase]: For 1022/1022 co-relation queries the response was YES. [2024-02-19 14:26:35,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95044 conditions, 5908 events. 3929/5908 cut-off events. For 1022/1022 co-relation queries the response was YES. Maximal size of possible extension queue 270. Compared 30885 event pairs, 10 based on Foata normal form. 0/4215 useless extension candidates. Maximal degree in co-relation 73227. Up to 5903 conditions per place. [2024-02-19 14:26:35,604 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 593 selfloop transitions, 66 changer transitions 1034/1694 dead transitions. [2024-02-19 14:26:35,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 1694 transitions, 55087 flow [2024-02-19 14:26:35,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-19 14:26:35,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-19 14:26:35,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 89 transitions. [2024-02-19 14:26:35,606 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5393939393939394 [2024-02-19 14:26:35,606 INFO L308 CegarLoopForPetriNet]: 33 programPoint places, 67 predicate places. [2024-02-19 14:26:35,606 INFO L507 AbstractCegarLoop]: Abstraction has has 100 places, 1694 transitions, 55087 flow [2024-02-19 14:26:35,606 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 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) [2024-02-19 14:26:35,606 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:26:35,606 INFO L234 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:26:35,607 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-02-19 14:26:35,607 INFO L432 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 14:26:35,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:26:35,607 INFO L85 PathProgramCache]: Analyzing trace with hash -1705362329, now seen corresponding path program 5 times [2024-02-19 14:26:35,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:26:35,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906726062] [2024-02-19 14:26:35,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:26:35,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:26:35,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:26:35,786 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-02-19 14:26:35,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:26:35,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906726062] [2024-02-19 14:26:35,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906726062] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:26:35,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 14:26:35,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-19 14:26:35,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949901951] [2024-02-19 14:26:35,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:26:35,788 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-19 14:26:35,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:26:35,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-19 14:26:35,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-02-19 14:26:35,788 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-02-19 14:26:35,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 1694 transitions, 55087 flow. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 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) [2024-02-19 14:26:35,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:26:35,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-02-19 14:26:35,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:26:37,795 INFO L124 PetriNetUnfolderBase]: 3993/6066 cut-off events. [2024-02-19 14:26:37,795 INFO L125 PetriNetUnfolderBase]: For 1058/1058 co-relation queries the response was YES. [2024-02-19 14:26:37,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103660 conditions, 6066 events. 3993/6066 cut-off events. For 1058/1058 co-relation queries the response was YES. Maximal size of possible extension queue 285. Compared 32450 event pairs, 10 based on Foata normal form. 0/4349 useless extension candidates. Maximal degree in co-relation 79800. Up to 6061 conditions per place. [2024-02-19 14:26:37,845 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 627 selfloop transitions, 78 changer transitions 1300/2006 dead transitions. [2024-02-19 14:26:37,846 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 2006 transitions, 69261 flow [2024-02-19 14:26:37,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-19 14:26:37,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-19 14:26:37,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 85 transitions. [2024-02-19 14:26:37,847 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5151515151515151 [2024-02-19 14:26:37,847 INFO L308 CegarLoopForPetriNet]: 33 programPoint places, 71 predicate places. [2024-02-19 14:26:37,847 INFO L507 AbstractCegarLoop]: Abstraction has has 104 places, 2006 transitions, 69261 flow [2024-02-19 14:26:37,847 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 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) [2024-02-19 14:26:37,847 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:26:37,848 INFO L234 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:26:37,848 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-02-19 14:26:37,848 INFO L432 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 14:26:37,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:26:37,848 INFO L85 PathProgramCache]: Analyzing trace with hash -278850943, now seen corresponding path program 7 times [2024-02-19 14:26:37,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:26:37,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38888587] [2024-02-19 14:26:37,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:26:37,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:26:37,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:26:38,123 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-02-19 14:26:38,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:26:38,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38888587] [2024-02-19 14:26:38,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38888587] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:26:38,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1806288191] [2024-02-19 14:26:38,124 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-02-19 14:26:38,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:26:38,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:26:38,139 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) [2024-02-19 14:26:38,156 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-02-19 14:26:38,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:26:38,331 INFO L262 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 7 conjunts are in the unsatisfiable core [2024-02-19 14:26:38,332 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:26:38,358 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-02-19 14:26:38,358 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:26:38,396 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-02-19 14:26:38,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1806288191] provided 1 perfect and 1 imperfect interpolant sequences [2024-02-19 14:26:38,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-02-19 14:26:38,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 10 [2024-02-19 14:26:38,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768383490] [2024-02-19 14:26:38,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:26:38,397 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-19 14:26:38,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:26:38,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-19 14:26:38,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-02-19 14:26:38,398 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-02-19 14:26:38,398 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 2006 transitions, 69261 flow. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 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) [2024-02-19 14:26:38,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:26:38,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-02-19 14:26:38,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:26:40,812 INFO L124 PetriNetUnfolderBase]: 4095/6244 cut-off events. [2024-02-19 14:26:40,813 INFO L125 PetriNetUnfolderBase]: For 1123/1123 co-relation queries the response was YES. [2024-02-19 14:26:40,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112940 conditions, 6244 events. 4095/6244 cut-off events. For 1123/1123 co-relation queries the response was YES. Maximal size of possible extension queue 303. Compared 33979 event pairs, 10 based on Foata normal form. 0/4541 useless extension candidates. Maximal degree in co-relation 87185. Up to 6239 conditions per place. [2024-02-19 14:26:40,856 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 653 selfloop transitions, 80 changer transitions 1327/2061 dead transitions. [2024-02-19 14:26:40,856 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 2061 transitions, 75269 flow [2024-02-19 14:26:40,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-19 14:26:40,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-19 14:26:40,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 86 transitions. [2024-02-19 14:26:40,858 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5212121212121212 [2024-02-19 14:26:40,864 INFO L308 CegarLoopForPetriNet]: 33 programPoint places, 75 predicate places. [2024-02-19 14:26:40,864 INFO L507 AbstractCegarLoop]: Abstraction has has 108 places, 2061 transitions, 75269 flow [2024-02-19 14:26:40,864 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 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) [2024-02-19 14:26:40,864 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:26:40,864 INFO L234 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:26:40,876 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-02-19 14:26:41,076 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,SelfDestructingSolverStorable16 [2024-02-19 14:26:41,076 INFO L432 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 14:26:41,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:26:41,076 INFO L85 PathProgramCache]: Analyzing trace with hash -112878083, now seen corresponding path program 6 times [2024-02-19 14:26:41,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:26:41,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788900332] [2024-02-19 14:26:41,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:26:41,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:26:41,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:26:41,260 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-02-19 14:26:41,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:26:41,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788900332] [2024-02-19 14:26:41,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788900332] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:26:41,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 14:26:41,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-19 14:26:41,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190237008] [2024-02-19 14:26:41,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:26:41,261 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-19 14:26:41,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:26:41,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-19 14:26:41,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-02-19 14:26:41,262 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-02-19 14:26:41,262 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 2061 transitions, 75269 flow. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 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) [2024-02-19 14:26:41,262 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:26:41,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-02-19 14:26:41,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:26:43,942 INFO L124 PetriNetUnfolderBase]: 4057/6206 cut-off events. [2024-02-19 14:26:43,943 INFO L125 PetriNetUnfolderBase]: For 1127/1127 co-relation queries the response was YES. [2024-02-19 14:26:43,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118460 conditions, 6206 events. 4057/6206 cut-off events. For 1127/1127 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 33964 event pairs, 10 based on Foata normal form. 0/4541 useless extension candidates. Maximal degree in co-relation 91402. Up to 6201 conditions per place. [2024-02-19 14:26:44,000 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 627 selfloop transitions, 78 changer transitions 1345/2051 dead transitions. [2024-02-19 14:26:44,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 2051 transitions, 79009 flow [2024-02-19 14:26:44,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-19 14:26:44,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-19 14:26:44,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 87 transitions. [2024-02-19 14:26:44,002 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5272727272727272 [2024-02-19 14:26:44,003 INFO L308 CegarLoopForPetriNet]: 33 programPoint places, 79 predicate places. [2024-02-19 14:26:44,003 INFO L507 AbstractCegarLoop]: Abstraction has has 112 places, 2051 transitions, 79009 flow [2024-02-19 14:26:44,003 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 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) [2024-02-19 14:26:44,003 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:26:44,006 INFO L234 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:26:44,006 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-02-19 14:26:44,006 INFO L432 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 14:26:44,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:26:44,007 INFO L85 PathProgramCache]: Analyzing trace with hash 2062864897, now seen corresponding path program 8 times [2024-02-19 14:26:44,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:26:44,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912127249] [2024-02-19 14:26:44,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:26:44,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:26:44,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:26:44,167 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-02-19 14:26:44,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:26:44,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912127249] [2024-02-19 14:26:44,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912127249] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:26:44,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 14:26:44,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-19 14:26:44,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744904361] [2024-02-19 14:26:44,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:26:44,169 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-19 14:26:44,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:26:44,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-19 14:26:44,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-02-19 14:26:44,170 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-02-19 14:26:44,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 2051 transitions, 79009 flow. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 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) [2024-02-19 14:26:44,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:26:44,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-02-19 14:26:44,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:26:46,803 INFO L124 PetriNetUnfolderBase]: 3881/5922 cut-off events. [2024-02-19 14:26:46,803 INFO L125 PetriNetUnfolderBase]: For 1048/1048 co-relation queries the response was YES. [2024-02-19 14:26:46,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118973 conditions, 5922 events. 3881/5922 cut-off events. For 1048/1048 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 31974 event pairs, 10 based on Foata normal form. 0/4381 useless extension candidates. Maximal degree in co-relation 92545. Up to 5918 conditions per place. [2024-02-19 14:26:46,855 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 571 selfloop transitions, 72 changer transitions 1323/1967 dead transitions. [2024-02-19 14:26:46,856 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 1967 transitions, 79695 flow [2024-02-19 14:26:46,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-19 14:26:46,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-19 14:26:46,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 84 transitions. [2024-02-19 14:26:46,857 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.509090909090909 [2024-02-19 14:26:46,858 INFO L308 CegarLoopForPetriNet]: 33 programPoint places, 83 predicate places. [2024-02-19 14:26:46,858 INFO L507 AbstractCegarLoop]: Abstraction has has 116 places, 1967 transitions, 79695 flow [2024-02-19 14:26:46,859 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 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) [2024-02-19 14:26:46,860 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:26:46,860 INFO L234 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:26:46,860 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-02-19 14:26:46,860 INFO L432 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 14:26:46,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:26:46,864 INFO L85 PathProgramCache]: Analyzing trace with hash -151793061, now seen corresponding path program 7 times [2024-02-19 14:26:46,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:26:46,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318912123] [2024-02-19 14:26:46,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:26:46,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:26:47,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:26:47,202 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-02-19 14:26:47,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:26:47,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318912123] [2024-02-19 14:26:47,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318912123] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:26:47,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1382452365] [2024-02-19 14:26:47,202 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-02-19 14:26:47,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:26:47,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:26:47,217 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) [2024-02-19 14:26:47,218 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-02-19 14:26:47,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:26:47,414 INFO L262 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 7 conjunts are in the unsatisfiable core [2024-02-19 14:26:47,415 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:26:47,449 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-02-19 14:26:47,449 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:26:47,501 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-02-19 14:26:47,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1382452365] provided 1 perfect and 1 imperfect interpolant sequences [2024-02-19 14:26:47,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-02-19 14:26:47,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 11 [2024-02-19 14:26:47,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508065431] [2024-02-19 14:26:47,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:26:47,503 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-19 14:26:47,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:26:47,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-19 14:26:47,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2024-02-19 14:26:47,503 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-02-19 14:26:47,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 1967 transitions, 79695 flow. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 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) [2024-02-19 14:26:47,504 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:26:47,504 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-02-19 14:26:47,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:26:49,836 INFO L124 PetriNetUnfolderBase]: 3691/5636 cut-off events. [2024-02-19 14:26:49,836 INFO L125 PetriNetUnfolderBase]: For 990/990 co-relation queries the response was YES. [2024-02-19 14:26:49,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118884 conditions, 5636 events. 3691/5636 cut-off events. For 990/990 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 30227 event pairs, 10 based on Foata normal form. 0/4245 useless extension candidates. Maximal degree in co-relation 92652. Up to 5633 conditions per place. [2024-02-19 14:26:49,875 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 533 selfloop transitions, 72 changer transitions 1277/1883 dead transitions. [2024-02-19 14:26:49,875 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 1883 transitions, 80045 flow [2024-02-19 14:26:49,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-19 14:26:49,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-19 14:26:49,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 87 transitions. [2024-02-19 14:26:49,877 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5272727272727272 [2024-02-19 14:26:49,877 INFO L308 CegarLoopForPetriNet]: 33 programPoint places, 87 predicate places. [2024-02-19 14:26:49,877 INFO L507 AbstractCegarLoop]: Abstraction has has 120 places, 1883 transitions, 80045 flow [2024-02-19 14:26:49,877 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 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) [2024-02-19 14:26:49,877 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:26:49,877 INFO L234 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:26:49,893 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-02-19 14:26:50,089 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:26:50,089 INFO L432 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 14:26:50,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:26:50,090 INFO L85 PathProgramCache]: Analyzing trace with hash 390875321, now seen corresponding path program 1 times [2024-02-19 14:26:50,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:26:50,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4073482] [2024-02-19 14:26:50,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:26:50,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:26:50,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:26:51,260 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-02-19 14:26:51,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:26:51,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4073482] [2024-02-19 14:26:51,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4073482] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:26:51,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1407404043] [2024-02-19 14:26:51,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:26:51,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:26:51,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:26:51,274 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) [2024-02-19 14:26:51,298 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-02-19 14:26:51,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:26:51,469 INFO L262 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 34 conjunts are in the unsatisfiable core [2024-02-19 14:26:51,470 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:26:51,904 INFO L349 Elim1Store]: treesize reduction 18, result has 51.4 percent of original size [2024-02-19 14:26:51,904 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 32 [2024-02-19 14:26:51,969 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-02-19 14:26:51,969 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:27:05,246 INFO L349 Elim1Store]: treesize reduction 28, result has 84.8 percent of original size [2024-02-19 14:27:05,246 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 112 treesize of output 187 [2024-02-19 14:27:06,482 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-02-19 14:27:06,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1407404043] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 14:27:06,483 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 14:27:06,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 11] total 32 [2024-02-19 14:27:06,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809842389] [2024-02-19 14:27:06,483 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 14:27:06,483 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-02-19 14:27:06,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:27:06,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-02-19 14:27:06,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=875, Unknown=3, NotChecked=0, Total=992 [2024-02-19 14:27:06,485 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-02-19 14:27:06,485 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 1883 transitions, 80045 flow. Second operand has 32 states, 32 states have (on average 6.53125) internal successors, (209), 32 states have internal predecessors, (209), 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) [2024-02-19 14:27:06,485 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:27:06,485 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-02-19 14:27:06,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:27:14,140 INFO L124 PetriNetUnfolderBase]: 7075/10828 cut-off events. [2024-02-19 14:27:14,140 INFO L125 PetriNetUnfolderBase]: For 1904/1904 co-relation queries the response was YES. [2024-02-19 14:27:14,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 239190 conditions, 10828 events. 7075/10828 cut-off events. For 1904/1904 co-relation queries the response was YES. Maximal size of possible extension queue 509. Compared 65474 event pairs, 2 based on Foata normal form. 3/8016 useless extension candidates. Maximal degree in co-relation 219502. Up to 10823 conditions per place. [2024-02-19 14:27:14,348 INFO L140 encePairwiseOnDemand]: 19/33 looper letters, 1080 selfloop transitions, 250 changer transitions 2690/4021 dead transitions. [2024-02-19 14:27:14,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 4021 transitions, 178952 flow [2024-02-19 14:27:14,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-02-19 14:27:14,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2024-02-19 14:27:14,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 431 transitions. [2024-02-19 14:27:14,356 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.3841354723707665 [2024-02-19 14:27:14,357 INFO L308 CegarLoopForPetriNet]: 33 programPoint places, 120 predicate places. [2024-02-19 14:27:14,357 INFO L507 AbstractCegarLoop]: Abstraction has has 153 places, 4021 transitions, 178952 flow [2024-02-19 14:27:14,357 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 6.53125) internal successors, (209), 32 states have internal predecessors, (209), 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) [2024-02-19 14:27:14,357 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:27:14,358 INFO L234 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:27:14,369 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-02-19 14:27:14,564 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:27:14,564 INFO L432 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 14:27:14,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:27:14,565 INFO L85 PathProgramCache]: Analyzing trace with hash -1663573121, now seen corresponding path program 2 times [2024-02-19 14:27:14,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:27:14,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121679653] [2024-02-19 14:27:14,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:27:14,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:27:14,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:27:16,872 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 4 proven. 37 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-02-19 14:27:16,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:27:16,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121679653] [2024-02-19 14:27:16,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121679653] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:27:16,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2000954696] [2024-02-19 14:27:16,873 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-19 14:27:16,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:27:16,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:27:16,876 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) [2024-02-19 14:27:16,877 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-02-19 14:27:17,114 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-19 14:27:17,114 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 14:27:17,116 INFO L262 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 48 conjunts are in the unsatisfiable core [2024-02-19 14:27:17,118 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:27:17,464 INFO L349 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2024-02-19 14:27:17,465 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 22 [2024-02-19 14:27:17,518 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-02-19 14:27:17,518 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:27:18,613 INFO L349 Elim1Store]: treesize reduction 28, result has 84.5 percent of original size [2024-02-19 14:27:18,613 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 94 treesize of output 182 [2024-02-19 14:27:19,447 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-02-19 14:27:19,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2000954696] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 14:27:19,448 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 14:27:19,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 14, 11] total 39 [2024-02-19 14:27:19,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546296823] [2024-02-19 14:27:19,448 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 14:27:19,449 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-02-19 14:27:19,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:27:19,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-02-19 14:27:19,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=1330, Unknown=0, NotChecked=0, Total=1482 [2024-02-19 14:27:19,451 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-02-19 14:27:19,451 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 4021 transitions, 178952 flow. Second operand has 39 states, 39 states have (on average 6.076923076923077) internal successors, (237), 39 states have internal predecessors, (237), 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) [2024-02-19 14:27:19,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:27:19,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-02-19 14:27:19,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:27:32,761 INFO L124 PetriNetUnfolderBase]: 7532/11526 cut-off events. [2024-02-19 14:27:32,761 INFO L125 PetriNetUnfolderBase]: For 2018/2018 co-relation queries the response was YES. [2024-02-19 14:27:32,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 266126 conditions, 11526 events. 7532/11526 cut-off events. For 2018/2018 co-relation queries the response was YES. Maximal size of possible extension queue 532. Compared 69931 event pairs, 0 based on Foata normal form. 2/8464 useless extension candidates. Maximal degree in co-relation 243647. Up to 11515 conditions per place. [2024-02-19 14:27:32,867 INFO L140 encePairwiseOnDemand]: 15/33 looper letters, 1190 selfloop transitions, 212 changer transitions 2837/4240 dead transitions. [2024-02-19 14:27:32,868 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 4240 transitions, 197174 flow [2024-02-19 14:27:32,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-02-19 14:27:32,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2024-02-19 14:27:32,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 391 transitions. [2024-02-19 14:27:32,886 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.3484848484848485 [2024-02-19 14:27:32,886 INFO L308 CegarLoopForPetriNet]: 33 programPoint places, 153 predicate places. [2024-02-19 14:27:32,886 INFO L507 AbstractCegarLoop]: Abstraction has has 186 places, 4240 transitions, 197174 flow [2024-02-19 14:27:32,887 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 6.076923076923077) internal successors, (237), 39 states have internal predecessors, (237), 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) [2024-02-19 14:27:32,888 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:27:32,888 INFO L234 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:27:32,901 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-02-19 14:27:33,101 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-02-19 14:27:33,101 INFO L432 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 14:27:33,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:27:33,101 INFO L85 PathProgramCache]: Analyzing trace with hash 566005277, now seen corresponding path program 3 times [2024-02-19 14:27:33,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:27:33,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85625508] [2024-02-19 14:27:33,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:27:33,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:27:33,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:27:34,582 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-02-19 14:27:34,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:27:34,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85625508] [2024-02-19 14:27:34,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85625508] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:27:34,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [703031887] [2024-02-19 14:27:34,582 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-02-19 14:27:34,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:27:34,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:27:34,584 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) [2024-02-19 14:27:34,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-02-19 14:27:34,834 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-02-19 14:27:34,834 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 14:27:34,836 INFO L262 TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 48 conjunts are in the unsatisfiable core [2024-02-19 14:27:34,838 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:27:35,094 INFO L349 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2024-02-19 14:27:35,094 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 30 [2024-02-19 14:27:35,179 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-02-19 14:27:35,179 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:27:36,142 INFO L349 Elim1Store]: treesize reduction 28, result has 84.5 percent of original size [2024-02-19 14:27:36,142 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 94 treesize of output 182 [2024-02-19 14:27:37,043 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-02-19 14:27:37,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [703031887] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 14:27:37,043 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 14:27:37,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 11] total 28 [2024-02-19 14:27:37,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095894960] [2024-02-19 14:27:37,044 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 14:27:37,044 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-02-19 14:27:37,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:27:37,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-02-19 14:27:37,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=656, Unknown=0, NotChecked=0, Total=756 [2024-02-19 14:27:37,046 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-02-19 14:27:37,046 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 4240 transitions, 197174 flow. Second operand has 28 states, 28 states have (on average 6.357142857142857) internal successors, (178), 28 states have internal predecessors, (178), 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) [2024-02-19 14:27:37,046 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:27:37,046 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-02-19 14:27:37,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:27:53,705 INFO L124 PetriNetUnfolderBase]: 8300/12824 cut-off events. [2024-02-19 14:27:53,705 INFO L125 PetriNetUnfolderBase]: For 2302/2302 co-relation queries the response was YES. [2024-02-19 14:27:53,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 308873 conditions, 12824 events. 8300/12824 cut-off events. For 2302/2302 co-relation queries the response was YES. Maximal size of possible extension queue 585. Compared 79722 event pairs, 8 based on Foata normal form. 4/9340 useless extension candidates. Maximal degree in co-relation 205332. Up to 12810 conditions per place. [2024-02-19 14:27:53,825 INFO L140 encePairwiseOnDemand]: 19/33 looper letters, 1355 selfloop transitions, 232 changer transitions 3252/4840 dead transitions. [2024-02-19 14:27:53,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 4840 transitions, 234824 flow [2024-02-19 14:27:53,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-02-19 14:27:53,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2024-02-19 14:27:53,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 372 transitions. [2024-02-19 14:27:53,827 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.3887147335423197 [2024-02-19 14:27:53,827 INFO L308 CegarLoopForPetriNet]: 33 programPoint places, 181 predicate places. [2024-02-19 14:27:53,827 INFO L507 AbstractCegarLoop]: Abstraction has has 214 places, 4840 transitions, 234824 flow [2024-02-19 14:27:53,828 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 6.357142857142857) internal successors, (178), 28 states have internal predecessors, (178), 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) [2024-02-19 14:27:53,828 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:27:53,828 INFO L234 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:27:53,842 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-02-19 14:27:54,039 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:27:54,040 INFO L432 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 14:27:54,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:27:54,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1274254117, now seen corresponding path program 4 times [2024-02-19 14:27:54,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:27:54,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530441079] [2024-02-19 14:27:54,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:27:54,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:27:54,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:27:56,248 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 4 proven. 42 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-02-19 14:27:56,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:27:56,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530441079] [2024-02-19 14:27:56,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530441079] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:27:56,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [486773228] [2024-02-19 14:27:56,249 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-02-19 14:27:56,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:27:56,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:27:56,252 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) [2024-02-19 14:27:56,253 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-02-19 14:27:56,483 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-02-19 14:27:56,484 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 14:27:56,486 INFO L262 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 36 conjunts are in the unsatisfiable core [2024-02-19 14:27:56,488 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:27:56,731 INFO L349 Elim1Store]: treesize reduction 18, result has 51.4 percent of original size [2024-02-19 14:27:56,731 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 32 [2024-02-19 14:27:56,774 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-02-19 14:27:56,774 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:27:57,907 INFO L349 Elim1Store]: treesize reduction 28, result has 84.5 percent of original size [2024-02-19 14:27:57,908 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 112 treesize of output 184 [2024-02-19 14:27:58,753 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-02-19 14:27:58,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [486773228] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 14:27:58,753 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 14:27:58,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 11, 11] total 42 [2024-02-19 14:27:58,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236836283] [2024-02-19 14:27:58,753 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 14:27:58,754 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-02-19 14:27:58,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:27:58,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-02-19 14:27:58,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=1551, Unknown=0, NotChecked=0, Total=1722 [2024-02-19 14:27:58,758 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-02-19 14:27:58,759 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 4840 transitions, 234824 flow. Second operand has 42 states, 42 states have (on average 6.023809523809524) internal successors, (253), 42 states have internal predecessors, (253), 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) [2024-02-19 14:27:58,759 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:27:58,759 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-02-19 14:27:58,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:28:21,239 INFO L124 PetriNetUnfolderBase]: 8984/13845 cut-off events. [2024-02-19 14:28:21,239 INFO L125 PetriNetUnfolderBase]: For 2498/2498 co-relation queries the response was YES. [2024-02-19 14:28:21,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 347289 conditions, 13845 events. 8984/13845 cut-off events. For 2498/2498 co-relation queries the response was YES. Maximal size of possible extension queue 645. Compared 86828 event pairs, 10 based on Foata normal form. 2/10027 useless extension candidates. Maximal degree in co-relation 230277. Up to 13831 conditions per place. [2024-02-19 14:28:21,359 INFO L140 encePairwiseOnDemand]: 15/33 looper letters, 1507 selfloop transitions, 231 changer transitions 3462/5201 dead transitions. [2024-02-19 14:28:21,359 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 5201 transitions, 262696 flow [2024-02-19 14:28:21,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-02-19 14:28:21,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2024-02-19 14:28:21,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 410 transitions. [2024-02-19 14:28:21,368 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.3106060606060606 [2024-02-19 14:28:21,369 INFO L308 CegarLoopForPetriNet]: 33 programPoint places, 220 predicate places. [2024-02-19 14:28:21,369 INFO L507 AbstractCegarLoop]: Abstraction has has 253 places, 5201 transitions, 262696 flow [2024-02-19 14:28:21,369 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 6.023809523809524) internal successors, (253), 42 states have internal predecessors, (253), 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) [2024-02-19 14:28:21,369 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:28:21,369 INFO L234 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:28:21,381 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-02-19 14:28:21,581 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:28:21,583 INFO L432 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 14:28:21,583 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:28:21,583 INFO L85 PathProgramCache]: Analyzing trace with hash -1291665845, now seen corresponding path program 5 times [2024-02-19 14:28:21,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:28:21,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411645367] [2024-02-19 14:28:21,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:28:21,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:28:21,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:28:23,810 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 4 proven. 51 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-02-19 14:28:23,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:28:23,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411645367] [2024-02-19 14:28:23,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411645367] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:28:23,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [121423687] [2024-02-19 14:28:23,811 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-02-19 14:28:23,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:28:23,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:28:23,812 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) [2024-02-19 14:28:23,815 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-02-19 14:28:24,550 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-02-19 14:28:24,550 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 14:28:24,553 INFO L262 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 51 conjunts are in the unsatisfiable core [2024-02-19 14:28:24,555 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:28:24,890 INFO L349 Elim1Store]: treesize reduction 8, result has 75.8 percent of original size [2024-02-19 14:28:24,890 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 38 [2024-02-19 14:28:25,000 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-02-19 14:28:25,000 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:28:26,157 INFO L349 Elim1Store]: treesize reduction 28, result has 88.8 percent of original size [2024-02-19 14:28:26,157 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 114 treesize of output 254 [2024-02-19 14:28:26,350 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-02-19 14:28:26,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [121423687] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 14:28:26,351 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 14:28:26,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 14, 11] total 50 [2024-02-19 14:28:26,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252757144] [2024-02-19 14:28:26,351 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 14:28:26,351 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-02-19 14:28:26,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:28:26,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-02-19 14:28:26,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=234, Invalid=2216, Unknown=0, NotChecked=0, Total=2450 [2024-02-19 14:28:26,353 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-02-19 14:28:26,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 5201 transitions, 262696 flow. Second operand has 50 states, 50 states have (on average 6.08) internal successors, (304), 50 states have internal predecessors, (304), 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) [2024-02-19 14:28:26,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:28:26,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-02-19 14:28:26,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:28:51,568 INFO L124 PetriNetUnfolderBase]: 9244/14323 cut-off events. [2024-02-19 14:28:51,569 INFO L125 PetriNetUnfolderBase]: For 2600/2600 co-relation queries the response was YES. [2024-02-19 14:28:51,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 373588 conditions, 14323 events. 9244/14323 cut-off events. For 2600/2600 co-relation queries the response was YES. Maximal size of possible extension queue 672. Compared 91124 event pairs, 2 based on Foata normal form. 2/10373 useless extension candidates. Maximal degree in co-relation 247174. Up to 14306 conditions per place. [2024-02-19 14:28:51,706 INFO L140 encePairwiseOnDemand]: 15/33 looper letters, 1533 selfloop transitions, 247 changer transitions 3622/5403 dead transitions. [2024-02-19 14:28:51,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 5403 transitions, 283732 flow [2024-02-19 14:28:51,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-02-19 14:28:51,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2024-02-19 14:28:51,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 397 transitions. [2024-02-19 14:28:51,708 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.3437229437229437 [2024-02-19 14:28:51,708 INFO L308 CegarLoopForPetriNet]: 33 programPoint places, 254 predicate places. [2024-02-19 14:28:51,708 INFO L507 AbstractCegarLoop]: Abstraction has has 287 places, 5403 transitions, 283732 flow [2024-02-19 14:28:51,709 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 6.08) internal successors, (304), 50 states have internal predecessors, (304), 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) [2024-02-19 14:28:51,709 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:28:51,709 INFO L234 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:28:51,722 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-02-19 14:28:51,910 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:28:51,911 INFO L432 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 14:28:51,911 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:28:51,911 INFO L85 PathProgramCache]: Analyzing trace with hash -889198661, now seen corresponding path program 6 times [2024-02-19 14:28:51,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:28:51,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933839556] [2024-02-19 14:28:51,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:28:51,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:28:52,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:28:54,078 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 4 proven. 42 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-02-19 14:28:54,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:28:54,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933839556] [2024-02-19 14:28:54,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933839556] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:28:54,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1294033381] [2024-02-19 14:28:54,079 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-02-19 14:28:54,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:28:54,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:28:54,080 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) [2024-02-19 14:28:54,082 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-02-19 14:28:54,410 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-02-19 14:28:54,410 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 14:28:54,412 INFO L262 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 46 conjunts are in the unsatisfiable core [2024-02-19 14:28:54,414 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:28:54,799 INFO L349 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2024-02-19 14:28:54,799 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 22 [2024-02-19 14:28:54,850 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-02-19 14:28:54,851 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:28:56,359 INFO L349 Elim1Store]: treesize reduction 28, result has 93.2 percent of original size [2024-02-19 14:28:56,359 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 204 treesize of output 440 [2024-02-19 14:28:56,861 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-02-19 14:28:56,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1294033381] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 14:28:56,862 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 14:28:56,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 14, 11] total 41 [2024-02-19 14:28:56,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816464283] [2024-02-19 14:28:56,863 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 14:28:56,864 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-02-19 14:28:56,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:28:56,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-02-19 14:28:56,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=1475, Unknown=0, NotChecked=0, Total=1640 [2024-02-19 14:28:56,865 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-02-19 14:28:56,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 5403 transitions, 283732 flow. Second operand has 41 states, 41 states have (on average 6.073170731707317) internal successors, (249), 41 states have internal predecessors, (249), 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) [2024-02-19 14:28:56,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:28:56,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-02-19 14:28:56,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:29:23,334 INFO L124 PetriNetUnfolderBase]: 10884/16871 cut-off events. [2024-02-19 14:29:23,335 INFO L125 PetriNetUnfolderBase]: For 2900/2900 co-relation queries the response was YES. [2024-02-19 14:29:23,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 456909 conditions, 16871 events. 10884/16871 cut-off events. For 2900/2900 co-relation queries the response was YES. Maximal size of possible extension queue 824. Compared 110905 event pairs, 4 based on Foata normal form. 1/12272 useless extension candidates. Maximal degree in co-relation 300735. Up to 16854 conditions per place. [2024-02-19 14:29:23,633 INFO L140 encePairwiseOnDemand]: 16/33 looper letters, 1836 selfloop transitions, 267 changer transitions 4403/6507 dead transitions. [2024-02-19 14:29:23,633 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 6507 transitions, 354716 flow [2024-02-19 14:29:23,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-02-19 14:29:23,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2024-02-19 14:29:23,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 374 transitions. [2024-02-19 14:29:23,635 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.2982456140350877 [2024-02-19 14:29:23,635 INFO L308 CegarLoopForPetriNet]: 33 programPoint places, 291 predicate places. [2024-02-19 14:29:23,635 INFO L507 AbstractCegarLoop]: Abstraction has has 324 places, 6507 transitions, 354716 flow [2024-02-19 14:29:23,635 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 6.073170731707317) internal successors, (249), 41 states have internal predecessors, (249), 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) [2024-02-19 14:29:23,636 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:29:23,636 INFO L234 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:29:23,648 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-02-19 14:29:23,847 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,SelfDestructingSolverStorable25 [2024-02-19 14:29:23,847 INFO L432 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 14:29:23,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:29:23,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1554381529, now seen corresponding path program 7 times [2024-02-19 14:29:23,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:29:23,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612657606] [2024-02-19 14:29:23,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:29:23,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:29:23,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:29:24,953 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-02-19 14:29:24,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:29:24,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612657606] [2024-02-19 14:29:24,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612657606] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:29:24,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1581973612] [2024-02-19 14:29:24,954 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-02-19 14:29:24,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:29:24,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:29:24,955 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) [2024-02-19 14:29:24,956 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-02-19 14:29:25,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:29:25,201 INFO L262 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 34 conjunts are in the unsatisfiable core [2024-02-19 14:29:25,202 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:29:25,412 INFO L349 Elim1Store]: treesize reduction 18, result has 51.4 percent of original size [2024-02-19 14:29:25,412 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 36 [2024-02-19 14:29:25,460 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-02-19 14:29:25,460 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:29:42,485 INFO L349 Elim1Store]: treesize reduction 28, result has 84.8 percent of original size [2024-02-19 14:29:42,485 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 112 treesize of output 187 [2024-02-19 14:29:43,525 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-02-19 14:29:43,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1581973612] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 14:29:43,526 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 14:29:43,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 11] total 32 [2024-02-19 14:29:43,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479064942] [2024-02-19 14:29:43,526 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 14:29:43,527 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-02-19 14:29:43,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:29:43,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-02-19 14:29:43,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=877, Unknown=3, NotChecked=0, Total=992 [2024-02-19 14:29:43,527 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-02-19 14:29:43,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 6507 transitions, 354716 flow. Second operand has 32 states, 32 states have (on average 6.5) internal successors, (208), 32 states have internal predecessors, (208), 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) [2024-02-19 14:29:43,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:29:43,528 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-02-19 14:29:43,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:30:25,703 INFO L124 PetriNetUnfolderBase]: 13772/21167 cut-off events. [2024-02-19 14:30:25,703 INFO L125 PetriNetUnfolderBase]: For 3604/3604 co-relation queries the response was YES. [2024-02-19 14:30:25,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 594208 conditions, 21167 events. 13772/21167 cut-off events. For 3604/3604 co-relation queries the response was YES. Maximal size of possible extension queue 1035. Compared 141923 event pairs, 0 based on Foata normal form. 3/15138 useless extension candidates. Maximal degree in co-relation 390040. Up to 21144 conditions per place. [2024-02-19 14:30:25,915 INFO L140 encePairwiseOnDemand]: 19/33 looper letters, 2287 selfloop transitions, 442 changer transitions 5321/8051 dead transitions. [2024-02-19 14:30:25,916 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 8051 transitions, 454924 flow [2024-02-19 14:30:25,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-02-19 14:30:25,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2024-02-19 14:30:25,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 382 transitions. [2024-02-19 14:30:25,917 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.3734115347018573 [2024-02-19 14:30:25,917 INFO L308 CegarLoopForPetriNet]: 33 programPoint places, 321 predicate places. [2024-02-19 14:30:25,917 INFO L507 AbstractCegarLoop]: Abstraction has has 354 places, 8051 transitions, 454924 flow [2024-02-19 14:30:25,917 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 6.5) internal successors, (208), 32 states have internal predecessors, (208), 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) [2024-02-19 14:30:25,918 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:30:25,918 INFO L234 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:30:25,930 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-02-19 14:30:26,123 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,SelfDestructingSolverStorable26 [2024-02-19 14:30:26,123 INFO L432 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 14:30:26,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:30:26,124 INFO L85 PathProgramCache]: Analyzing trace with hash 664370607, now seen corresponding path program 8 times [2024-02-19 14:30:26,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:30:26,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60652428] [2024-02-19 14:30:26,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:30:26,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:30:26,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:30:27,450 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-02-19 14:30:27,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:30:27,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60652428] [2024-02-19 14:30:27,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60652428] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:30:27,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [628138391] [2024-02-19 14:30:27,451 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-19 14:30:27,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:30:27,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:30:27,452 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) [2024-02-19 14:30:27,453 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-02-19 14:30:27,709 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-19 14:30:27,709 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 14:30:27,711 INFO L262 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 48 conjunts are in the unsatisfiable core [2024-02-19 14:30:27,713 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:30:27,959 INFO L349 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2024-02-19 14:30:27,960 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 30 [2024-02-19 14:30:28,042 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-02-19 14:30:28,042 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:30:28,995 INFO L349 Elim1Store]: treesize reduction 28, result has 84.5 percent of original size [2024-02-19 14:30:28,995 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 112 treesize of output 184 [2024-02-19 14:30:29,775 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-02-19 14:30:29,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [628138391] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 14:30:29,776 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 14:30:29,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 11] total 29 [2024-02-19 14:30:29,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251153096] [2024-02-19 14:30:29,776 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 14:30:29,777 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-02-19 14:30:29,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:30:29,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-02-19 14:30:29,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=703, Unknown=0, NotChecked=0, Total=812 [2024-02-19 14:30:29,779 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-02-19 14:30:29,779 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 8051 transitions, 454924 flow. Second operand has 29 states, 29 states have (on average 6.413793103448276) internal successors, (186), 29 states have internal predecessors, (186), 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) [2024-02-19 14:30:29,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:30:29,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-02-19 14:30:29,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:31:35,271 INFO L124 PetriNetUnfolderBase]: 14996/23203 cut-off events. [2024-02-19 14:31:35,271 INFO L125 PetriNetUnfolderBase]: For 4166/4166 co-relation queries the response was YES. [2024-02-19 14:31:35,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 674451 conditions, 23203 events. 14996/23203 cut-off events. For 4166/4166 co-relation queries the response was YES. Maximal size of possible extension queue 1127. Compared 159362 event pairs, 0 based on Foata normal form. 4/16487 useless extension candidates. Maximal degree in co-relation 439689. Up to 23174 conditions per place. [2024-02-19 14:31:35,524 INFO L140 encePairwiseOnDemand]: 18/33 looper letters, 2669 selfloop transitions, 301 changer transitions 5808/8779 dead transitions. [2024-02-19 14:31:35,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 8779 transitions, 513716 flow [2024-02-19 14:31:35,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-02-19 14:31:35,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2024-02-19 14:31:35,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 427 transitions. [2024-02-19 14:31:35,526 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.35942760942760943 [2024-02-19 14:31:35,527 INFO L308 CegarLoopForPetriNet]: 33 programPoint places, 356 predicate places. [2024-02-19 14:31:35,527 INFO L507 AbstractCegarLoop]: Abstraction has has 389 places, 8779 transitions, 513716 flow [2024-02-19 14:31:35,527 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 6.413793103448276) internal successors, (186), 29 states have internal predecessors, (186), 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) [2024-02-19 14:31:35,527 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:31:35,527 INFO L234 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:31:35,540 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-02-19 14:31:35,728 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-02-19 14:31:35,729 INFO L432 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 14:31:35,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:31:35,729 INFO L85 PathProgramCache]: Analyzing trace with hash 839848673, now seen corresponding path program 9 times [2024-02-19 14:31:35,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:31:35,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961819506] [2024-02-19 14:31:35,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:31:35,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:31:35,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:31:36,825 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-02-19 14:31:36,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:31:36,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961819506] [2024-02-19 14:31:36,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961819506] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:31:36,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2072671737] [2024-02-19 14:31:36,826 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-02-19 14:31:36,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:31:36,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:31:36,827 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) [2024-02-19 14:31:36,827 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-02-19 14:31:37,091 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-02-19 14:31:37,091 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 14:31:37,093 INFO L262 TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 48 conjunts are in the unsatisfiable core [2024-02-19 14:31:37,094 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:31:37,323 INFO L349 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2024-02-19 14:31:37,324 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 30 [2024-02-19 14:31:37,383 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-02-19 14:31:37,383 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:31:38,215 INFO L349 Elim1Store]: treesize reduction 28, result has 84.5 percent of original size [2024-02-19 14:31:38,215 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 112 treesize of output 184 [2024-02-19 14:31:38,654 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-02-19 14:31:38,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2072671737] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 14:31:38,655 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 14:31:38,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 11] total 29 [2024-02-19 14:31:38,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266226155] [2024-02-19 14:31:38,655 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 14:31:38,656 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-02-19 14:31:38,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:31:38,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-02-19 14:31:38,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=703, Unknown=0, NotChecked=0, Total=812 [2024-02-19 14:31:38,657 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-02-19 14:31:38,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 8779 transitions, 513716 flow. Second operand has 29 states, 29 states have (on average 6.413793103448276) internal successors, (186), 29 states have internal predecessors, (186), 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) [2024-02-19 14:31:38,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:31:38,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-02-19 14:31:38,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:32:57,529 INFO L124 PetriNetUnfolderBase]: 16052/24961 cut-off events. [2024-02-19 14:32:57,530 INFO L125 PetriNetUnfolderBase]: For 4404/4404 co-relation queries the response was YES. [2024-02-19 14:32:57,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 750411 conditions, 24961 events. 16052/24961 cut-off events. For 4404/4404 co-relation queries the response was YES. Maximal size of possible extension queue 1234. Compared 174373 event pairs, 0 based on Foata normal form. 4/17653 useless extension candidates. Maximal degree in co-relation 487722. Up to 24927 conditions per place. [2024-02-19 14:32:57,808 INFO L140 encePairwiseOnDemand]: 19/33 looper letters, 2856 selfloop transitions, 306 changer transitions 6226/9389 dead transitions. [2024-02-19 14:32:57,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 9389 transitions, 568268 flow [2024-02-19 14:32:57,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-02-19 14:32:57,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2024-02-19 14:32:57,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 389 transitions. [2024-02-19 14:32:57,810 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.38025415444770283 [2024-02-19 14:32:57,811 INFO L308 CegarLoopForPetriNet]: 33 programPoint places, 386 predicate places. [2024-02-19 14:32:57,811 INFO L507 AbstractCegarLoop]: Abstraction has has 419 places, 9389 transitions, 568268 flow [2024-02-19 14:32:57,811 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 6.413793103448276) internal successors, (186), 29 states have internal predecessors, (186), 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) [2024-02-19 14:32:57,811 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:32:57,811 INFO L234 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:32:57,827 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-02-19 14:32:58,024 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:32:58,025 INFO L432 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 14:32:58,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:32:58,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1669184967, now seen corresponding path program 10 times [2024-02-19 14:32:58,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:32:58,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670857395] [2024-02-19 14:32:58,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:32:58,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:32:58,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:33:00,813 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 3 proven. 56 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-19 14:33:00,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:33:00,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670857395] [2024-02-19 14:33:00,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670857395] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:33:00,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1511947940] [2024-02-19 14:33:00,814 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-02-19 14:33:00,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:33:00,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:33:00,815 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) [2024-02-19 14:33:00,816 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-02-19 14:33:01,071 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-02-19 14:33:01,071 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 14:33:01,073 INFO L262 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 40 conjunts are in the unsatisfiable core [2024-02-19 14:33:01,081 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:33:01,624 INFO L349 Elim1Store]: treesize reduction 18, result has 51.4 percent of original size [2024-02-19 14:33:01,625 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 32 [2024-02-19 14:33:01,699 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-02-19 14:33:01,699 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:33:02,662 INFO L349 Elim1Store]: treesize reduction 28, result has 84.5 percent of original size [2024-02-19 14:33:02,663 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 112 treesize of output 184 [2024-02-19 14:33:03,231 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-02-19 14:33:03,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1511947940] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 14:33:03,233 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 14:33:03,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 13, 11] total 52 [2024-02-19 14:33:03,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250612826] [2024-02-19 14:33:03,234 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 14:33:03,234 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-02-19 14:33:03,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:33:03,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-02-19 14:33:03,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=2448, Unknown=0, NotChecked=0, Total=2652 [2024-02-19 14:33:03,236 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-02-19 14:33:03,236 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 9389 transitions, 568268 flow. Second operand has 52 states, 52 states have (on average 5.903846153846154) internal successors, (307), 52 states have internal predecessors, (307), 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) [2024-02-19 14:33:03,236 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:33:03,236 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-02-19 14:33:03,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:36:56,482 INFO L124 PetriNetUnfolderBase]: 34265/53981 cut-off events. [2024-02-19 14:36:56,482 INFO L125 PetriNetUnfolderBase]: For 9223/9223 co-relation queries the response was YES. [2024-02-19 14:36:56,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1676499 conditions, 53981 events. 34265/53981 cut-off events. For 9223/9223 co-relation queries the response was YES. Maximal size of possible extension queue 2713. Compared 432821 event pairs, 0 based on Foata normal form. 4/38191 useless extension candidates. Maximal degree in co-relation 1063268. Up to 53902 conditions per place. [2024-02-19 14:36:57,276 INFO L140 encePairwiseOnDemand]: 14/33 looper letters, 5333 selfloop transitions, 1798 changer transitions 13207/20339 dead transitions. [2024-02-19 14:36:57,276 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 485 places, 20339 transitions, 1272475 flow [2024-02-19 14:36:57,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2024-02-19 14:36:57,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2024-02-19 14:36:57,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 793 transitions. [2024-02-19 14:36:57,278 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.35866123925825416 [2024-02-19 14:36:57,279 INFO L308 CegarLoopForPetriNet]: 33 programPoint places, 452 predicate places. [2024-02-19 14:36:57,279 INFO L507 AbstractCegarLoop]: Abstraction has has 485 places, 20339 transitions, 1272475 flow [2024-02-19 14:36:57,279 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 5.903846153846154) internal successors, (307), 52 states have internal predecessors, (307), 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) [2024-02-19 14:36:57,279 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:36:57,279 INFO L234 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:36:57,291 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-02-19 14:36:57,491 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:36:57,491 INFO L432 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 14:36:57,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:36:57,491 INFO L85 PathProgramCache]: Analyzing trace with hash 1832902515, now seen corresponding path program 11 times [2024-02-19 14:36:57,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:36:57,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509809891] [2024-02-19 14:36:57,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:36:57,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:36:57,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:37:00,101 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 6 proven. 53 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-19 14:37:00,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:37:00,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509809891] [2024-02-19 14:37:00,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509809891] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:37:00,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1083337570] [2024-02-19 14:37:00,103 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-02-19 14:37:00,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:37:00,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:37:00,104 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) [2024-02-19 14:37:00,104 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-02-19 14:37:00,604 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-02-19 14:37:00,604 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 14:37:00,607 INFO L262 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 41 conjunts are in the unsatisfiable core [2024-02-19 14:37:00,609 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:37:01,054 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-19 14:37:01,055 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 72 treesize of output 100 [2024-02-19 14:37:01,279 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-02-19 14:37:01,279 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:37:03,006 INFO L349 Elim1Store]: treesize reduction 28, result has 93.2 percent of original size [2024-02-19 14:37:03,006 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 204 treesize of output 440 [2024-02-19 14:37:03,543 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-02-19 14:37:03,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1083337570] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 14:37:03,543 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 14:37:03,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 13, 11] total 52 [2024-02-19 14:37:03,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164297350] [2024-02-19 14:37:03,543 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 14:37:03,544 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-02-19 14:37:03,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:37:03,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-02-19 14:37:03,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=227, Invalid=2425, Unknown=0, NotChecked=0, Total=2652 [2024-02-19 14:37:03,545 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-02-19 14:37:03,545 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 485 places, 20339 transitions, 1272475 flow. Second operand has 52 states, 52 states have (on average 6.019230769230769) internal successors, (313), 52 states have internal predecessors, (313), 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) [2024-02-19 14:37:03,546 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:37:03,546 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-02-19 14:37:03,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Killed by 15