./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/chl-word-symm.wvr.c --full-output --traceabstraction.positions.where.we.compute.the.hoare.annotation All --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 448d4d75 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/chl-word-symm.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 4ca4c99e545bc332635ee8b9969d24118d6fd539f8535aa6ae4c72d296ec330e --traceabstraction.positions.where.we.compute.the.hoare.annotation All --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.owicki-witnesses-448d4d7-m [2024-02-20 11:54:06,140 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-20 11:54:06,203 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-20 11:54:06,209 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-20 11:54:06,209 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-20 11:54:06,227 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-20 11:54:06,228 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-20 11:54:06,228 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-20 11:54:06,229 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-20 11:54:06,229 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-20 11:54:06,230 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-20 11:54:06,230 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-20 11:54:06,230 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-20 11:54:06,231 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-20 11:54:06,231 INFO L153 SettingsManager]: * Use SBE=true [2024-02-20 11:54:06,231 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-20 11:54:06,232 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-20 11:54:06,232 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-20 11:54:06,232 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-20 11:54:06,233 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-20 11:54:06,233 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-20 11:54:06,233 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-20 11:54:06,234 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-20 11:54:06,234 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-20 11:54:06,235 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-20 11:54:06,235 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-20 11:54:06,235 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-20 11:54:06,236 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-20 11:54:06,236 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-20 11:54:06,236 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-20 11:54:06,237 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-20 11:54:06,237 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-20 11:54:06,237 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-20 11:54:06,238 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-20 11:54:06,238 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-20 11:54:06,238 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-20 11:54:06,238 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-20 11:54:06,238 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-20 11:54:06,239 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-20 11:54:06,239 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-20 11:54:06,239 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-20 11:54:06,239 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-20 11:54:06,239 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-20 11:54:06,240 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4ca4c99e545bc332635ee8b9969d24118d6fd539f8535aa6ae4c72d296ec330e Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All [2024-02-20 11:54:06,426 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-20 11:54:06,448 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-20 11:54:06,450 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-20 11:54:06,451 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-20 11:54:06,451 INFO L274 PluginConnector]: CDTParser initialized [2024-02-20 11:54:06,452 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-word-symm.wvr.c [2024-02-20 11:54:07,444 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-20 11:54:07,591 INFO L384 CDTParser]: Found 1 translation units. [2024-02-20 11:54:07,592 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-word-symm.wvr.c [2024-02-20 11:54:07,597 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d4de1b177/295340ef240644a8a8d5ca413b7e46c7/FLAGacf6310ab [2024-02-20 11:54:07,607 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d4de1b177/295340ef240644a8a8d5ca413b7e46c7 [2024-02-20 11:54:07,609 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-20 11:54:07,610 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-02-20 11:54:07,611 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-20 11:54:07,611 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-20 11:54:07,615 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-20 11:54:07,615 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 11:54:07" (1/1) ... [2024-02-20 11:54:07,616 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@725ea3bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:54:07, skipping insertion in model container [2024-02-20 11:54:07,616 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 11:54:07" (1/1) ... [2024-02-20 11:54:07,633 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-02-20 11:54:07,754 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-word-symm.wvr.c[2848,2861] [2024-02-20 11:54:07,760 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-20 11:54:07,766 INFO L202 MainTranslator]: Completed pre-run [2024-02-20 11:54:07,782 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-word-symm.wvr.c[2848,2861] [2024-02-20 11:54:07,784 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-20 11:54:07,796 INFO L206 MainTranslator]: Completed translation [2024-02-20 11:54:07,796 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:54:07 WrapperNode [2024-02-20 11:54:07,796 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-20 11:54:07,797 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-20 11:54:07,797 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-20 11:54:07,797 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-20 11:54:07,802 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:54:07" (1/1) ... [2024-02-20 11:54:07,807 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:54:07" (1/1) ... [2024-02-20 11:54:07,840 INFO L138 Inliner]: procedures = 24, calls = 35, calls flagged for inlining = 9, calls inlined = 11, statements flattened = 135 [2024-02-20 11:54:07,840 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-20 11:54:07,841 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-20 11:54:07,841 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-20 11:54:07,841 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-20 11:54:07,848 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:54:07" (1/1) ... [2024-02-20 11:54:07,848 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:54:07" (1/1) ... [2024-02-20 11:54:07,850 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:54:07" (1/1) ... [2024-02-20 11:54:07,869 INFO L175 MemorySlicer]: Split 16 memory accesses to 4 slices as follows [2, 2, 2, 10]. 63 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 4 writes are split as follows [0, 1, 1, 2]. [2024-02-20 11:54:07,869 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:54:07" (1/1) ... [2024-02-20 11:54:07,869 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:54:07" (1/1) ... [2024-02-20 11:54:07,879 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:54:07" (1/1) ... [2024-02-20 11:54:07,883 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:54:07" (1/1) ... [2024-02-20 11:54:07,885 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:54:07" (1/1) ... [2024-02-20 11:54:07,891 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:54:07" (1/1) ... [2024-02-20 11:54:07,894 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-20 11:54:07,894 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-20 11:54:07,894 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-20 11:54:07,894 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-20 11:54:07,895 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:54:07" (1/1) ... [2024-02-20 11:54:07,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-20 11:54:07,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:54:07,918 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-02-20 11:54:07,936 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-02-20 11:54:07,957 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-20 11:54:07,957 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-02-20 11:54:07,957 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-02-20 11:54:07,957 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-02-20 11:54:07,958 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-02-20 11:54:07,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-20 11:54:07,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-20 11:54:07,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-20 11:54:07,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-02-20 11:54:07,958 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-20 11:54:07,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-20 11:54:07,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-20 11:54:07,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-20 11:54:07,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-02-20 11:54:07,959 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-02-20 11:54:07,959 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-20 11:54:07,959 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-20 11:54:07,959 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-02-20 11:54:07,959 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-02-20 11:54:07,959 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-02-20 11:54:07,960 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-02-20 11:54:07,960 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-20 11:54:07,961 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-02-20 11:54:08,041 INFO L244 CfgBuilder]: Building ICFG [2024-02-20 11:54:08,043 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-20 11:54:08,320 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-20 11:54:08,320 INFO L293 CfgBuilder]: Performing block encoding [2024-02-20 11:54:08,526 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-20 11:54:08,527 INFO L320 CfgBuilder]: Removed 4 assume(true) statements. [2024-02-20 11:54:08,527 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 11:54:08 BoogieIcfgContainer [2024-02-20 11:54:08,527 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-20 11:54:08,531 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-20 11:54:08,531 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-20 11:54:08,533 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-20 11:54:08,533 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.02 11:54:07" (1/3) ... [2024-02-20 11:54:08,534 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46b9843 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 11:54:08, skipping insertion in model container [2024-02-20 11:54:08,534 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:54:07" (2/3) ... [2024-02-20 11:54:08,535 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46b9843 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 11:54:08, skipping insertion in model container [2024-02-20 11:54:08,535 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 11:54:08" (3/3) ... [2024-02-20 11:54:08,536 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-word-symm.wvr.c [2024-02-20 11:54:08,549 INFO L221 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-20 11:54:08,550 INFO L180 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-02-20 11:54:08,550 INFO L635 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-20 11:54:08,587 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-02-20 11:54:08,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 34 places, 35 transitions, 84 flow [2024-02-20 11:54:08,651 INFO L124 PetriNetUnfolderBase]: 8/33 cut-off events. [2024-02-20 11:54:08,651 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-02-20 11:54:08,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42 conditions, 33 events. 8/33 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 44 event pairs, 0 based on Foata normal form. 0/24 useless extension candidates. Maximal degree in co-relation 23. Up to 2 conditions per place. [2024-02-20 11:54:08,653 INFO L82 GeneralOperation]: Start removeDead. Operand has 34 places, 35 transitions, 84 flow [2024-02-20 11:54:08,655 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 31 places, 32 transitions, 76 flow [2024-02-20 11:54:08,662 INFO L368 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-20 11:54:08,667 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;@765748ab, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-20 11:54:08,667 INFO L370 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-02-20 11:54:08,674 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-20 11:54:08,674 INFO L124 PetriNetUnfolderBase]: 8/31 cut-off events. [2024-02-20 11:54:08,674 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-02-20 11:54:08,674 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:54:08,675 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:54:08,675 INFO L432 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:54:08,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:54:08,679 INFO L85 PathProgramCache]: Analyzing trace with hash -690480976, now seen corresponding path program 1 times [2024-02-20 11:54:08,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:54:08,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128859164] [2024-02-20 11:54:08,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:54:08,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:54:08,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:54:09,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:09,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:54:09,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128859164] [2024-02-20 11:54:09,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128859164] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 11:54:09,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-20 11:54:09,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-20 11:54:09,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105047398] [2024-02-20 11:54:09,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:54:09,196 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-20 11:54:09,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:54:09,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-20 11:54:09,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-20 11:54:09,223 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 35 [2024-02-20 11:54:09,225 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 32 transitions, 76 flow. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:54:09,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:54:09,225 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 35 [2024-02-20 11:54:09,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:54:09,416 INFO L124 PetriNetUnfolderBase]: 241/402 cut-off events. [2024-02-20 11:54:09,416 INFO L125 PetriNetUnfolderBase]: For 33/33 co-relation queries the response was YES. [2024-02-20 11:54:09,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 838 conditions, 402 events. 241/402 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1501 event pairs, 105 based on Foata normal form. 1/303 useless extension candidates. Maximal degree in co-relation 671. Up to 279 conditions per place. [2024-02-20 11:54:09,420 INFO L140 encePairwiseOnDemand]: 31/35 looper letters, 40 selfloop transitions, 1 changer transitions 9/53 dead transitions. [2024-02-20 11:54:09,420 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 53 transitions, 233 flow [2024-02-20 11:54:09,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-20 11:54:09,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-20 11:54:09,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 72 transitions. [2024-02-20 11:54:09,428 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5142857142857142 [2024-02-20 11:54:09,430 INFO L308 CegarLoopForPetriNet]: 31 programPoint places, 3 predicate places. [2024-02-20 11:54:09,430 INFO L507 AbstractCegarLoop]: Abstraction has has 34 places, 53 transitions, 233 flow [2024-02-20 11:54:09,431 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:54:09,431 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:54:09,431 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:54:09,431 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-20 11:54:09,431 INFO L432 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:54:09,431 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:54:09,432 INFO L85 PathProgramCache]: Analyzing trace with hash 91439742, now seen corresponding path program 2 times [2024-02-20 11:54:09,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:54:09,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599205652] [2024-02-20 11:54:09,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:54:09,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:54:09,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:54:09,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:09,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:54:09,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599205652] [2024-02-20 11:54:09,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599205652] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 11:54:09,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-20 11:54:09,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-20 11:54:09,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278239797] [2024-02-20 11:54:09,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:54:09,643 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-20 11:54:09,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:54:09,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-20 11:54:09,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-20 11:54:09,645 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 35 [2024-02-20 11:54:09,645 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 53 transitions, 233 flow. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:54:09,646 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:54:09,646 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 35 [2024-02-20 11:54:09,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:54:09,811 INFO L124 PetriNetUnfolderBase]: 277/482 cut-off events. [2024-02-20 11:54:09,812 INFO L125 PetriNetUnfolderBase]: For 50/56 co-relation queries the response was YES. [2024-02-20 11:54:09,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1480 conditions, 482 events. 277/482 cut-off events. For 50/56 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 1894 event pairs, 105 based on Foata normal form. 1/375 useless extension candidates. Maximal degree in co-relation 1189. Up to 359 conditions per place. [2024-02-20 11:54:09,817 INFO L140 encePairwiseOnDemand]: 31/35 looper letters, 52 selfloop transitions, 1 changer transitions 16/72 dead transitions. [2024-02-20 11:54:09,817 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 72 transitions, 459 flow [2024-02-20 11:54:09,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-20 11:54:09,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-20 11:54:09,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 70 transitions. [2024-02-20 11:54:09,820 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-02-20 11:54:09,821 INFO L308 CegarLoopForPetriNet]: 31 programPoint places, 6 predicate places. [2024-02-20 11:54:09,822 INFO L507 AbstractCegarLoop]: Abstraction has has 37 places, 72 transitions, 459 flow [2024-02-20 11:54:09,822 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:54:09,822 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:54:09,822 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] [2024-02-20 11:54:09,823 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-20 11:54:09,823 INFO L432 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:54:09,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:54:09,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1291258009, now seen corresponding path program 1 times [2024-02-20 11:54:09,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:54:09,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822656242] [2024-02-20 11:54:09,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:54:09,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:54:09,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:54:09,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:09,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:54:09,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822656242] [2024-02-20 11:54:09,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822656242] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 11:54:09,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-20 11:54:09,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-20 11:54:09,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328331170] [2024-02-20 11:54:09,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:54:09,876 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-20 11:54:09,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:54:09,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-20 11:54:09,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-20 11:54:09,880 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 35 [2024-02-20 11:54:09,881 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 72 transitions, 459 flow. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:54:09,881 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:54:09,881 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 35 [2024-02-20 11:54:09,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:54:09,956 INFO L124 PetriNetUnfolderBase]: 193/337 cut-off events. [2024-02-20 11:54:09,956 INFO L125 PetriNetUnfolderBase]: For 39/39 co-relation queries the response was YES. [2024-02-20 11:54:09,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1377 conditions, 337 events. 193/337 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1157 event pairs, 50 based on Foata normal form. 0/273 useless extension candidates. Maximal degree in co-relation 1173. Up to 281 conditions per place. [2024-02-20 11:54:09,958 INFO L140 encePairwiseOnDemand]: 31/35 looper letters, 30 selfloop transitions, 2 changer transitions 24/59 dead transitions. [2024-02-20 11:54:09,958 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 59 transitions, 487 flow [2024-02-20 11:54:09,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-20 11:54:09,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-20 11:54:09,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 56 transitions. [2024-02-20 11:54:09,959 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2024-02-20 11:54:09,959 INFO L308 CegarLoopForPetriNet]: 31 programPoint places, 8 predicate places. [2024-02-20 11:54:09,959 INFO L507 AbstractCegarLoop]: Abstraction has has 39 places, 59 transitions, 487 flow [2024-02-20 11:54:09,959 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:54:09,959 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:54:09,960 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] [2024-02-20 11:54:09,960 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-02-20 11:54:09,960 INFO L432 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:54:09,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:54:09,960 INFO L85 PathProgramCache]: Analyzing trace with hash -453316909, now seen corresponding path program 1 times [2024-02-20 11:54:09,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:54:09,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566953698] [2024-02-20 11:54:09,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:54:09,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:54:09,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:54:10,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:10,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:54:10,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566953698] [2024-02-20 11:54:10,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566953698] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 11:54:10,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-20 11:54:10,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-20 11:54:10,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650499871] [2024-02-20 11:54:10,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:54:10,220 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-20 11:54:10,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:54:10,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-20 11:54:10,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-02-20 11:54:10,221 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 35 [2024-02-20 11:54:10,222 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 59 transitions, 487 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:54:10,222 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:54:10,222 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 35 [2024-02-20 11:54:10,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:54:10,441 INFO L124 PetriNetUnfolderBase]: 521/883 cut-off events. [2024-02-20 11:54:10,441 INFO L125 PetriNetUnfolderBase]: For 275/300 co-relation queries the response was YES. [2024-02-20 11:54:10,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4377 conditions, 883 events. 521/883 cut-off events. For 275/300 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 3833 event pairs, 79 based on Foata normal form. 4/723 useless extension candidates. Maximal degree in co-relation 2319. Up to 775 conditions per place. [2024-02-20 11:54:10,446 INFO L140 encePairwiseOnDemand]: 22/35 looper letters, 92 selfloop transitions, 14 changer transitions 35/143 dead transitions. [2024-02-20 11:54:10,446 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 143 transitions, 1465 flow [2024-02-20 11:54:10,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-20 11:54:10,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-20 11:54:10,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 147 transitions. [2024-02-20 11:54:10,448 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2024-02-20 11:54:10,448 INFO L308 CegarLoopForPetriNet]: 31 programPoint places, 16 predicate places. [2024-02-20 11:54:10,448 INFO L507 AbstractCegarLoop]: Abstraction has has 47 places, 143 transitions, 1465 flow [2024-02-20 11:54:10,449 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:54:10,449 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:54:10,449 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] [2024-02-20 11:54:10,449 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-02-20 11:54:10,452 INFO L432 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:54:10,452 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:54:10,452 INFO L85 PathProgramCache]: Analyzing trace with hash 477451698, now seen corresponding path program 1 times [2024-02-20 11:54:10,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:54:10,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300945677] [2024-02-20 11:54:10,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:54:10,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:54:10,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:54:10,725 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:10,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:54:10,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300945677] [2024-02-20 11:54:10,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300945677] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:54:10,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1331811928] [2024-02-20 11:54:10,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:54:10,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:54:10,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:54:10,727 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 11:54:10,753 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-02-20 11:54:10,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:54:10,805 INFO L262 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 20 conjunts are in the unsatisfiable core [2024-02-20 11:54:10,808 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:54:11,091 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:11,092 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:54:11,642 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:11,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1331811928] provided 1 perfect and 1 imperfect interpolant sequences [2024-02-20 11:54:11,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-02-20 11:54:11,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9, 9] total 25 [2024-02-20 11:54:11,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855870023] [2024-02-20 11:54:11,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:54:11,643 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-20 11:54:11,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:54:11,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-20 11:54:11,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=514, Unknown=0, NotChecked=0, Total=650 [2024-02-20 11:54:11,651 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 35 [2024-02-20 11:54:11,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 143 transitions, 1465 flow. Second operand has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:54:11,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:54:11,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 35 [2024-02-20 11:54:11,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:54:12,351 INFO L124 PetriNetUnfolderBase]: 1341/2284 cut-off events. [2024-02-20 11:54:12,351 INFO L125 PetriNetUnfolderBase]: For 1116/1116 co-relation queries the response was YES. [2024-02-20 11:54:12,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13332 conditions, 2284 events. 1341/2284 cut-off events. For 1116/1116 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 12258 event pairs, 105 based on Foata normal form. 1/1878 useless extension candidates. Maximal degree in co-relation 5092. Up to 2001 conditions per place. [2024-02-20 11:54:12,365 INFO L140 encePairwiseOnDemand]: 22/35 looper letters, 234 selfloop transitions, 46 changer transitions 93/374 dead transitions. [2024-02-20 11:54:12,365 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 374 transitions, 4550 flow [2024-02-20 11:54:12,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-02-20 11:54:12,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-02-20 11:54:12,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 218 transitions. [2024-02-20 11:54:12,369 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.47912087912087914 [2024-02-20 11:54:12,371 INFO L308 CegarLoopForPetriNet]: 31 programPoint places, 28 predicate places. [2024-02-20 11:54:12,371 INFO L507 AbstractCegarLoop]: Abstraction has has 59 places, 374 transitions, 4550 flow [2024-02-20 11:54:12,371 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:54:12,371 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:54:12,371 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] [2024-02-20 11:54:12,387 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-02-20 11:54:12,583 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:54:12,583 INFO L432 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:54:12,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:54:12,584 INFO L85 PathProgramCache]: Analyzing trace with hash 2038622486, now seen corresponding path program 2 times [2024-02-20 11:54:12,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:54:12,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130520936] [2024-02-20 11:54:12,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:54:12,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:54:12,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:54:12,846 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:12,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:54:12,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130520936] [2024-02-20 11:54:12,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130520936] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:54:12,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1239353993] [2024-02-20 11:54:12,848 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-20 11:54:12,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:54:12,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:54:12,850 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 11:54:12,868 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-02-20 11:54:12,926 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-02-20 11:54:12,926 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:54:12,927 INFO L262 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 19 conjunts are in the unsatisfiable core [2024-02-20 11:54:12,928 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:54:13,121 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-20 11:54:13,122 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-02-20 11:54:13,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1239353993] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 11:54:13,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-02-20 11:54:13,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 16 [2024-02-20 11:54:13,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218384301] [2024-02-20 11:54:13,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:54:13,126 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-20 11:54:13,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:54:13,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-20 11:54:13,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2024-02-20 11:54:13,131 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 35 [2024-02-20 11:54:13,132 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 374 transitions, 4550 flow. Second operand has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:54:13,132 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:54:13,132 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 35 [2024-02-20 11:54:13,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:54:13,525 INFO L124 PetriNetUnfolderBase]: 1359/2334 cut-off events. [2024-02-20 11:54:13,525 INFO L125 PetriNetUnfolderBase]: For 1298/1298 co-relation queries the response was YES. [2024-02-20 11:54:13,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15968 conditions, 2334 events. 1359/2334 cut-off events. For 1298/1298 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 12632 event pairs, 83 based on Foata normal form. 1/1928 useless extension candidates. Maximal degree in co-relation 6178. Up to 2051 conditions per place. [2024-02-20 11:54:13,543 INFO L140 encePairwiseOnDemand]: 22/35 looper letters, 266 selfloop transitions, 41 changer transitions 109/417 dead transitions. [2024-02-20 11:54:13,543 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 417 transitions, 5904 flow [2024-02-20 11:54:13,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-20 11:54:13,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-20 11:54:13,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 140 transitions. [2024-02-20 11:54:13,544 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-02-20 11:54:13,545 INFO L308 CegarLoopForPetriNet]: 31 programPoint places, 36 predicate places. [2024-02-20 11:54:13,545 INFO L507 AbstractCegarLoop]: Abstraction has has 67 places, 417 transitions, 5904 flow [2024-02-20 11:54:13,545 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:54:13,545 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:54:13,545 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] [2024-02-20 11:54:13,562 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-02-20 11:54:13,756 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,SelfDestructingSolverStorable5 [2024-02-20 11:54:13,757 INFO L432 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:54:13,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:54:13,758 INFO L85 PathProgramCache]: Analyzing trace with hash 1566818468, now seen corresponding path program 3 times [2024-02-20 11:54:13,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:54:13,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638676455] [2024-02-20 11:54:13,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:54:13,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:54:13,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:54:13,933 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:13,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:54:13,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638676455] [2024-02-20 11:54:13,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638676455] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:54:13,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1983631575] [2024-02-20 11:54:13,934 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-02-20 11:54:13,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:54:13,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:54:13,936 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 11:54:13,962 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-02-20 11:54:14,007 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-02-20 11:54:14,007 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:54:14,008 INFO L262 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 19 conjunts are in the unsatisfiable core [2024-02-20 11:54:14,010 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:54:14,190 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-20 11:54:14,190 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-02-20 11:54:14,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1983631575] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 11:54:14,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-02-20 11:54:14,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 16 [2024-02-20 11:54:14,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143609820] [2024-02-20 11:54:14,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:54:14,191 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-20 11:54:14,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:54:14,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-20 11:54:14,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2024-02-20 11:54:14,195 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 35 [2024-02-20 11:54:14,196 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 417 transitions, 5904 flow. Second operand has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:54:14,196 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:54:14,196 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 35 [2024-02-20 11:54:14,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:54:14,523 INFO L124 PetriNetUnfolderBase]: 1359/2332 cut-off events. [2024-02-20 11:54:14,523 INFO L125 PetriNetUnfolderBase]: For 1298/1298 co-relation queries the response was YES. [2024-02-20 11:54:14,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18288 conditions, 2332 events. 1359/2332 cut-off events. For 1298/1298 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 12606 event pairs, 83 based on Foata normal form. 1/1926 useless extension candidates. Maximal degree in co-relation 7081. Up to 2050 conditions per place. [2024-02-20 11:54:14,544 INFO L140 encePairwiseOnDemand]: 22/35 looper letters, 263 selfloop transitions, 42 changer transitions 122/428 dead transitions. [2024-02-20 11:54:14,545 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 428 transitions, 6918 flow [2024-02-20 11:54:14,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-20 11:54:14,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-20 11:54:14,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 140 transitions. [2024-02-20 11:54:14,546 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-02-20 11:54:14,546 INFO L308 CegarLoopForPetriNet]: 31 programPoint places, 44 predicate places. [2024-02-20 11:54:14,546 INFO L507 AbstractCegarLoop]: Abstraction has has 75 places, 428 transitions, 6918 flow [2024-02-20 11:54:14,547 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:54:14,547 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:54:14,547 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] [2024-02-20 11:54:14,560 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-02-20 11:54:14,758 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:54:14,758 INFO L432 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:54:14,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:54:14,759 INFO L85 PathProgramCache]: Analyzing trace with hash 1260271556, now seen corresponding path program 4 times [2024-02-20 11:54:14,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:54:14,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111255167] [2024-02-20 11:54:14,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:54:14,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:54:14,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:54:14,922 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:14,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:54:14,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111255167] [2024-02-20 11:54:14,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111255167] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:54:14,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1822338723] [2024-02-20 11:54:14,923 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-02-20 11:54:14,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:54:14,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:54:14,924 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 11:54:14,925 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-02-20 11:54:14,999 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-02-20 11:54:15,000 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:54:15,005 INFO L262 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 20 conjunts are in the unsatisfiable core [2024-02-20 11:54:15,006 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:54:15,239 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:15,239 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:54:15,503 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:15,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1822338723] provided 1 perfect and 1 imperfect interpolant sequences [2024-02-20 11:54:15,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-02-20 11:54:15,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9, 9] total 25 [2024-02-20 11:54:15,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779397002] [2024-02-20 11:54:15,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:54:15,506 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-20 11:54:15,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:54:15,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-20 11:54:15,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=517, Unknown=0, NotChecked=0, Total=650 [2024-02-20 11:54:15,513 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 35 [2024-02-20 11:54:15,513 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 428 transitions, 6918 flow. Second operand has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:54:15,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:54:15,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 35 [2024-02-20 11:54:15,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:54:16,027 INFO L124 PetriNetUnfolderBase]: 1359/2330 cut-off events. [2024-02-20 11:54:16,027 INFO L125 PetriNetUnfolderBase]: For 1298/1298 co-relation queries the response was YES. [2024-02-20 11:54:16,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20606 conditions, 2330 events. 1359/2330 cut-off events. For 1298/1298 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 12582 event pairs, 71 based on Foata normal form. 1/1924 useless extension candidates. Maximal degree in co-relation 7984. Up to 2049 conditions per place. [2024-02-20 11:54:16,045 INFO L140 encePairwiseOnDemand]: 22/35 looper letters, 255 selfloop transitions, 49 changer transitions 135/440 dead transitions. [2024-02-20 11:54:16,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 440 transitions, 7994 flow [2024-02-20 11:54:16,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-02-20 11:54:16,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-02-20 11:54:16,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 181 transitions. [2024-02-20 11:54:16,047 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.430952380952381 [2024-02-20 11:54:16,048 INFO L308 CegarLoopForPetriNet]: 31 programPoint places, 55 predicate places. [2024-02-20 11:54:16,048 INFO L507 AbstractCegarLoop]: Abstraction has has 86 places, 440 transitions, 7994 flow [2024-02-20 11:54:16,049 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:54:16,049 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:54:16,049 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] [2024-02-20 11:54:16,066 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-02-20 11:54:16,260 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:54:16,261 INFO L432 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:54:16,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:54:16,261 INFO L85 PathProgramCache]: Analyzing trace with hash 2054229654, now seen corresponding path program 5 times [2024-02-20 11:54:16,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:54:16,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955599585] [2024-02-20 11:54:16,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:54:16,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:54:16,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:54:16,436 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:16,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:54:16,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955599585] [2024-02-20 11:54:16,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955599585] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:54:16,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1265534225] [2024-02-20 11:54:16,437 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-02-20 11:54:16,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:54:16,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:54:16,440 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 11:54:16,464 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-02-20 11:54:16,517 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-20 11:54:16,517 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:54:16,518 INFO L262 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 20 conjunts are in the unsatisfiable core [2024-02-20 11:54:16,520 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:54:16,743 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:16,743 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:54:17,142 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:17,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1265534225] provided 1 perfect and 1 imperfect interpolant sequences [2024-02-20 11:54:17,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-02-20 11:54:17,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9, 9] total 25 [2024-02-20 11:54:17,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218106470] [2024-02-20 11:54:17,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:54:17,144 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-20 11:54:17,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:54:17,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-20 11:54:17,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=514, Unknown=0, NotChecked=0, Total=650 [2024-02-20 11:54:17,155 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 35 [2024-02-20 11:54:17,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 440 transitions, 7994 flow. Second operand has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:54:17,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:54:17,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 35 [2024-02-20 11:54:17,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:54:17,896 INFO L124 PetriNetUnfolderBase]: 1472/2563 cut-off events. [2024-02-20 11:54:17,896 INFO L125 PetriNetUnfolderBase]: For 1474/1474 co-relation queries the response was YES. [2024-02-20 11:54:17,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25246 conditions, 2563 events. 1472/2563 cut-off events. For 1474/1474 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 14328 event pairs, 83 based on Foata normal form. 1/2133 useless extension candidates. Maximal degree in co-relation 10552. Up to 2276 conditions per place. [2024-02-20 11:54:17,910 INFO L140 encePairwiseOnDemand]: 22/35 looper letters, 291 selfloop transitions, 55 changer transitions 163/510 dead transitions. [2024-02-20 11:54:17,910 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 510 transitions, 10302 flow [2024-02-20 11:54:17,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-02-20 11:54:17,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-02-20 11:54:17,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 213 transitions. [2024-02-20 11:54:17,912 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.46813186813186813 [2024-02-20 11:54:17,913 INFO L308 CegarLoopForPetriNet]: 31 programPoint places, 67 predicate places. [2024-02-20 11:54:17,913 INFO L507 AbstractCegarLoop]: Abstraction has has 98 places, 510 transitions, 10302 flow [2024-02-20 11:54:17,913 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:54:17,913 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:54:17,913 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] [2024-02-20 11:54:17,927 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-02-20 11:54:18,120 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:54:18,120 INFO L432 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:54:18,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:54:18,121 INFO L85 PathProgramCache]: Analyzing trace with hash -610721680, now seen corresponding path program 6 times [2024-02-20 11:54:18,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:54:18,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689246858] [2024-02-20 11:54:18,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:54:18,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:54:18,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:54:18,285 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:18,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:54:18,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689246858] [2024-02-20 11:54:18,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689246858] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:54:18,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1802360926] [2024-02-20 11:54:18,286 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-02-20 11:54:18,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:54:18,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:54:18,296 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 11:54:18,320 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-02-20 11:54:18,366 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-02-20 11:54:18,366 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:54:18,367 INFO L262 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 19 conjunts are in the unsatisfiable core [2024-02-20 11:54:18,370 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:54:18,520 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-20 11:54:18,520 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-02-20 11:54:18,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1802360926] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 11:54:18,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-02-20 11:54:18,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 16 [2024-02-20 11:54:18,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8935795] [2024-02-20 11:54:18,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:54:18,521 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-20 11:54:18,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:54:18,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-20 11:54:18,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2024-02-20 11:54:18,522 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 35 [2024-02-20 11:54:18,522 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 510 transitions, 10302 flow. Second operand has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:54:18,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:54:18,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 35 [2024-02-20 11:54:18,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:54:18,900 INFO L124 PetriNetUnfolderBase]: 1472/2561 cut-off events. [2024-02-20 11:54:18,900 INFO L125 PetriNetUnfolderBase]: For 1474/1474 co-relation queries the response was YES. [2024-02-20 11:54:18,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27792 conditions, 2561 events. 1472/2561 cut-off events. For 1474/1474 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 14319 event pairs, 83 based on Foata normal form. 1/2131 useless extension candidates. Maximal degree in co-relation 11622. Up to 2275 conditions per place. [2024-02-20 11:54:18,919 INFO L140 encePairwiseOnDemand]: 22/35 looper letters, 294 selfloop transitions, 45 changer transitions 171/511 dead transitions. [2024-02-20 11:54:18,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 511 transitions, 11342 flow [2024-02-20 11:54:18,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-20 11:54:18,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-20 11:54:18,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 132 transitions. [2024-02-20 11:54:18,920 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.41904761904761906 [2024-02-20 11:54:18,921 INFO L308 CegarLoopForPetriNet]: 31 programPoint places, 75 predicate places. [2024-02-20 11:54:18,921 INFO L507 AbstractCegarLoop]: Abstraction has has 106 places, 511 transitions, 11342 flow [2024-02-20 11:54:18,921 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:54:18,921 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:54:18,921 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] [2024-02-20 11:54:18,938 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-02-20 11:54:19,132 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:54:19,133 INFO L432 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:54:19,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:54:19,133 INFO L85 PathProgramCache]: Analyzing trace with hash 1022681641, now seen corresponding path program 1 times [2024-02-20 11:54:19,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:54:19,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814099713] [2024-02-20 11:54:19,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:54:19,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:54:19,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:54:19,281 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:19,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:54:19,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814099713] [2024-02-20 11:54:19,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814099713] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:54:19,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1856245015] [2024-02-20 11:54:19,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:54:19,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:54:19,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:54:19,283 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 11:54:19,284 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-02-20 11:54:19,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:54:19,356 INFO L262 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 20 conjunts are in the unsatisfiable core [2024-02-20 11:54:19,357 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:54:19,548 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:19,548 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:54:20,060 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:20,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1856245015] provided 1 perfect and 1 imperfect interpolant sequences [2024-02-20 11:54:20,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-02-20 11:54:20,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8] total 22 [2024-02-20 11:54:20,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473952607] [2024-02-20 11:54:20,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:54:20,062 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-20 11:54:20,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:54:20,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-20 11:54:20,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506 [2024-02-20 11:54:20,068 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 35 [2024-02-20 11:54:20,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 511 transitions, 11342 flow. Second operand has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:54:20,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:54:20,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 35 [2024-02-20 11:54:20,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:54:21,058 INFO L124 PetriNetUnfolderBase]: 2114/3710 cut-off events. [2024-02-20 11:54:21,058 INFO L125 PetriNetUnfolderBase]: For 2080/2080 co-relation queries the response was YES. [2024-02-20 11:54:21,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43936 conditions, 3710 events. 2114/3710 cut-off events. For 2080/2080 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 22827 event pairs, 116 based on Foata normal form. 1/3105 useless extension candidates. Maximal degree in co-relation 12692. Up to 3244 conditions per place. [2024-02-20 11:54:21,083 INFO L140 encePairwiseOnDemand]: 21/35 looper letters, 440 selfloop transitions, 52 changer transitions 225/718 dead transitions. [2024-02-20 11:54:21,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 718 transitions, 17338 flow [2024-02-20 11:54:21,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-02-20 11:54:21,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-02-20 11:54:21,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 270 transitions. [2024-02-20 11:54:21,085 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5510204081632653 [2024-02-20 11:54:21,085 INFO L308 CegarLoopForPetriNet]: 31 programPoint places, 88 predicate places. [2024-02-20 11:54:21,085 INFO L507 AbstractCegarLoop]: Abstraction has has 119 places, 718 transitions, 17338 flow [2024-02-20 11:54:21,085 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:54:21,086 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:54:21,086 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] [2024-02-20 11:54:21,100 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-02-20 11:54:21,300 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:54:21,300 INFO L432 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:54:21,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:54:21,301 INFO L85 PathProgramCache]: Analyzing trace with hash -336376875, now seen corresponding path program 2 times [2024-02-20 11:54:21,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:54:21,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257062999] [2024-02-20 11:54:21,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:54:21,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:54:21,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:54:21,454 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:21,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:54:21,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257062999] [2024-02-20 11:54:21,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257062999] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:54:21,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1796413969] [2024-02-20 11:54:21,455 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-20 11:54:21,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:54:21,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:54:21,469 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 11:54:21,471 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-02-20 11:54:21,553 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-02-20 11:54:21,553 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:54:21,554 INFO L262 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 19 conjunts are in the unsatisfiable core [2024-02-20 11:54:21,557 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:54:21,719 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-20 11:54:21,719 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-02-20 11:54:21,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1796413969] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 11:54:21,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-02-20 11:54:21,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 14 [2024-02-20 11:54:21,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816158163] [2024-02-20 11:54:21,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:54:21,720 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-20 11:54:21,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:54:21,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-20 11:54:21,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2024-02-20 11:54:21,724 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 35 [2024-02-20 11:54:21,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 718 transitions, 17338 flow. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:54:21,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:54:21,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 35 [2024-02-20 11:54:21,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:54:22,421 INFO L124 PetriNetUnfolderBase]: 2126/3741 cut-off events. [2024-02-20 11:54:22,422 INFO L125 PetriNetUnfolderBase]: For 2168/2168 co-relation queries the response was YES. [2024-02-20 11:54:22,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48043 conditions, 3741 events. 2126/3741 cut-off events. For 2168/2168 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 23065 event pairs, 105 based on Foata normal form. 1/3136 useless extension candidates. Maximal degree in co-relation 13762. Up to 3275 conditions per place. [2024-02-20 11:54:22,448 INFO L140 encePairwiseOnDemand]: 21/35 looper letters, 452 selfloop transitions, 53 changer transitions 234/740 dead transitions. [2024-02-20 11:54:22,449 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 740 transitions, 19347 flow [2024-02-20 11:54:22,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-20 11:54:22,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-20 11:54:22,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 143 transitions. [2024-02-20 11:54:22,450 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.45396825396825397 [2024-02-20 11:54:22,450 INFO L308 CegarLoopForPetriNet]: 31 programPoint places, 96 predicate places. [2024-02-20 11:54:22,450 INFO L507 AbstractCegarLoop]: Abstraction has has 127 places, 740 transitions, 19347 flow [2024-02-20 11:54:22,451 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:54:22,451 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:54:22,451 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] [2024-02-20 11:54:22,466 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-02-20 11:54:22,662 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,SelfDestructingSolverStorable11 [2024-02-20 11:54:22,662 INFO L432 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:54:22,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:54:22,663 INFO L85 PathProgramCache]: Analyzing trace with hash 796867657, now seen corresponding path program 3 times [2024-02-20 11:54:22,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:54:22,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572569741] [2024-02-20 11:54:22,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:54:22,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:54:22,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:54:22,838 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:22,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:54:22,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572569741] [2024-02-20 11:54:22,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572569741] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:54:22,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [947451956] [2024-02-20 11:54:22,839 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-02-20 11:54:22,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:54:22,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:54:22,840 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 11:54:22,856 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-02-20 11:54:22,911 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-02-20 11:54:22,911 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:54:22,912 INFO L262 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 19 conjunts are in the unsatisfiable core [2024-02-20 11:54:22,916 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:54:23,099 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-20 11:54:23,100 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-02-20 11:54:23,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [947451956] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 11:54:23,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-02-20 11:54:23,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 15 [2024-02-20 11:54:23,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478613244] [2024-02-20 11:54:23,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:54:23,101 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-20 11:54:23,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:54:23,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-20 11:54:23,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2024-02-20 11:54:23,103 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 35 [2024-02-20 11:54:23,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 740 transitions, 19347 flow. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:54:23,104 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:54:23,104 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 35 [2024-02-20 11:54:23,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:54:23,814 INFO L124 PetriNetUnfolderBase]: 2126/3739 cut-off events. [2024-02-20 11:54:23,815 INFO L125 PetriNetUnfolderBase]: For 2168/2168 co-relation queries the response was YES. [2024-02-20 11:54:23,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51759 conditions, 3739 events. 2126/3739 cut-off events. For 2168/2168 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 23058 event pairs, 105 based on Foata normal form. 1/3134 useless extension candidates. Maximal degree in co-relation 14832. Up to 3274 conditions per place. [2024-02-20 11:54:23,845 INFO L140 encePairwiseOnDemand]: 21/35 looper letters, 449 selfloop transitions, 53 changer transitions 242/745 dead transitions. [2024-02-20 11:54:23,845 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 745 transitions, 20968 flow [2024-02-20 11:54:23,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-20 11:54:23,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-20 11:54:23,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 143 transitions. [2024-02-20 11:54:23,847 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.45396825396825397 [2024-02-20 11:54:23,848 INFO L308 CegarLoopForPetriNet]: 31 programPoint places, 104 predicate places. [2024-02-20 11:54:23,848 INFO L507 AbstractCegarLoop]: Abstraction has has 135 places, 745 transitions, 20968 flow [2024-02-20 11:54:23,848 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:54:23,848 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:54:23,848 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] [2024-02-20 11:54:23,862 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-02-20 11:54:24,060 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-02-20 11:54:24,060 INFO L432 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:54:24,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:54:24,061 INFO L85 PathProgramCache]: Analyzing trace with hash 490320745, now seen corresponding path program 4 times [2024-02-20 11:54:24,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:54:24,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55003479] [2024-02-20 11:54:24,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:54:24,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:54:24,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:54:24,213 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:24,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:54:24,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55003479] [2024-02-20 11:54:24,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55003479] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:54:24,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1257799771] [2024-02-20 11:54:24,213 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-02-20 11:54:24,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:54:24,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:54:24,215 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 11:54:24,232 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-02-20 11:54:24,297 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-02-20 11:54:24,297 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:54:24,299 INFO L262 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 18 conjunts are in the unsatisfiable core [2024-02-20 11:54:24,301 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:54:24,489 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:24,489 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:54:24,768 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:24,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1257799771] provided 1 perfect and 1 imperfect interpolant sequences [2024-02-20 11:54:24,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-02-20 11:54:24,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [8, 10] total 26 [2024-02-20 11:54:24,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293993171] [2024-02-20 11:54:24,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:54:24,769 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-20 11:54:24,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:54:24,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-20 11:54:24,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=535, Unknown=0, NotChecked=0, Total=650 [2024-02-20 11:54:24,781 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 35 [2024-02-20 11:54:24,781 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 745 transitions, 20968 flow. Second operand has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:54:24,781 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:54:24,781 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 35 [2024-02-20 11:54:24,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:54:25,958 INFO L124 PetriNetUnfolderBase]: 2627/4632 cut-off events. [2024-02-20 11:54:25,959 INFO L125 PetriNetUnfolderBase]: For 2558/2558 co-relation queries the response was YES. [2024-02-20 11:54:25,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68810 conditions, 4632 events. 2627/4632 cut-off events. For 2558/2558 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 29709 event pairs, 133 based on Foata normal form. 2/3884 useless extension candidates. Maximal degree in co-relation 20436. Up to 4138 conditions per place. [2024-02-20 11:54:25,995 INFO L140 encePairwiseOnDemand]: 18/35 looper letters, 568 selfloop transitions, 108 changer transitions 289/966 dead transitions. [2024-02-20 11:54:25,995 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 966 transitions, 29106 flow [2024-02-20 11:54:25,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-02-20 11:54:25,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-02-20 11:54:25,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 235 transitions. [2024-02-20 11:54:25,997 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.44761904761904764 [2024-02-20 11:54:25,997 INFO L308 CegarLoopForPetriNet]: 31 programPoint places, 118 predicate places. [2024-02-20 11:54:25,997 INFO L507 AbstractCegarLoop]: Abstraction has has 149 places, 966 transitions, 29106 flow [2024-02-20 11:54:25,997 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:54:25,998 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:54:25,998 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] [2024-02-20 11:54:26,011 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-02-20 11:54:26,206 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,SelfDestructingSolverStorable13 [2024-02-20 11:54:26,206 INFO L432 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:54:26,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:54:26,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1284278843, now seen corresponding path program 5 times [2024-02-20 11:54:26,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:54:26,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744922348] [2024-02-20 11:54:26,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:54:26,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:54:26,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:54:26,361 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:26,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:54:26,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744922348] [2024-02-20 11:54:26,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744922348] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:54:26,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1533484442] [2024-02-20 11:54:26,362 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-02-20 11:54:26,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:54:26,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:54:26,363 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 11:54:26,388 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-02-20 11:54:26,432 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-20 11:54:26,433 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:54:26,434 INFO L262 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 20 conjunts are in the unsatisfiable core [2024-02-20 11:54:26,435 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:54:26,626 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:26,626 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:54:27,045 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:27,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1533484442] provided 1 perfect and 1 imperfect interpolant sequences [2024-02-20 11:54:27,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-02-20 11:54:27,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9, 8] total 23 [2024-02-20 11:54:27,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050064982] [2024-02-20 11:54:27,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:54:27,046 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-20 11:54:27,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:54:27,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-20 11:54:27,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2024-02-20 11:54:27,052 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 35 [2024-02-20 11:54:27,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 966 transitions, 29106 flow. Second operand has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:54:27,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:54:27,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 35 [2024-02-20 11:54:27,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:54:28,535 INFO L124 PetriNetUnfolderBase]: 2746/4886 cut-off events. [2024-02-20 11:54:28,535 INFO L125 PetriNetUnfolderBase]: For 2746/2746 co-relation queries the response was YES. [2024-02-20 11:54:28,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77453 conditions, 4886 events. 2746/4886 cut-off events. For 2746/2746 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 31964 event pairs, 125 based on Foata normal form. 2/4114 useless extension candidates. Maximal degree in co-relation 25696. Up to 4385 conditions per place. [2024-02-20 11:54:28,578 INFO L140 encePairwiseOnDemand]: 21/35 looper letters, 641 selfloop transitions, 79 changer transitions 313/1034 dead transitions. [2024-02-20 11:54:28,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 1034 transitions, 33239 flow [2024-02-20 11:54:28,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-02-20 11:54:28,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-02-20 11:54:28,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 265 transitions. [2024-02-20 11:54:28,579 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5408163265306123 [2024-02-20 11:54:28,580 INFO L308 CegarLoopForPetriNet]: 31 programPoint places, 131 predicate places. [2024-02-20 11:54:28,580 INFO L507 AbstractCegarLoop]: Abstraction has has 162 places, 1034 transitions, 33239 flow [2024-02-20 11:54:28,580 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:54:28,580 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:54:28,580 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] [2024-02-20 11:54:28,593 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-02-20 11:54:28,780 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,SelfDestructingSolverStorable14 [2024-02-20 11:54:28,781 INFO L432 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:54:28,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:54:28,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1380672491, now seen corresponding path program 6 times [2024-02-20 11:54:28,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:54:28,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311708255] [2024-02-20 11:54:28,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:54:28,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:54:28,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:54:28,945 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:28,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:54:28,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311708255] [2024-02-20 11:54:28,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311708255] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:54:28,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1811286818] [2024-02-20 11:54:28,945 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-02-20 11:54:28,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:54:28,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:54:28,947 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 11:54:28,948 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-02-20 11:54:29,023 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-02-20 11:54:29,024 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:54:29,025 INFO L262 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 19 conjunts are in the unsatisfiable core [2024-02-20 11:54:29,030 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:54:29,205 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-20 11:54:29,205 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-02-20 11:54:29,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1811286818] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 11:54:29,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-02-20 11:54:29,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 15 [2024-02-20 11:54:29,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680961693] [2024-02-20 11:54:29,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:54:29,206 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-20 11:54:29,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:54:29,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-20 11:54:29,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2024-02-20 11:54:29,208 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 35 [2024-02-20 11:54:29,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 1034 transitions, 33239 flow. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:54:29,209 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:54:29,209 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 35 [2024-02-20 11:54:29,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:54:30,359 INFO L124 PetriNetUnfolderBase]: 2746/4882 cut-off events. [2024-02-20 11:54:30,360 INFO L125 PetriNetUnfolderBase]: For 2746/2746 co-relation queries the response was YES. [2024-02-20 11:54:30,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82288 conditions, 4882 events. 2746/4882 cut-off events. For 2746/2746 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 31943 event pairs, 125 based on Foata normal form. 2/4110 useless extension candidates. Maximal degree in co-relation 27312. Up to 4383 conditions per place. [2024-02-20 11:54:30,398 INFO L140 encePairwiseOnDemand]: 21/35 looper letters, 629 selfloop transitions, 75 changer transitions 331/1036 dead transitions. [2024-02-20 11:54:30,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 1036 transitions, 35373 flow [2024-02-20 11:54:30,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-20 11:54:30,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-20 11:54:30,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 135 transitions. [2024-02-20 11:54:30,400 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-02-20 11:54:30,400 INFO L308 CegarLoopForPetriNet]: 31 programPoint places, 139 predicate places. [2024-02-20 11:54:30,400 INFO L507 AbstractCegarLoop]: Abstraction has has 170 places, 1036 transitions, 35373 flow [2024-02-20 11:54:30,400 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:54:30,400 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:54:30,401 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] [2024-02-20 11:54:30,411 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-02-20 11:54:30,611 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,SelfDestructingSolverStorable15 [2024-02-20 11:54:30,612 INFO L432 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:54:30,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:54:30,612 INFO L85 PathProgramCache]: Analyzing trace with hash 534510910, now seen corresponding path program 1 times [2024-02-20 11:54:30,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:54:30,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669851350] [2024-02-20 11:54:30,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:54:30,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:54:30,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:54:30,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:30,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:54:30,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669851350] [2024-02-20 11:54:30,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669851350] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 11:54:30,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-20 11:54:30,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-20 11:54:30,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120302885] [2024-02-20 11:54:30,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:54:30,657 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-20 11:54:30,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:54:30,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-20 11:54:30,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-02-20 11:54:30,658 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 35 [2024-02-20 11:54:30,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 1036 transitions, 35373 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:54:30,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:54:30,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 35 [2024-02-20 11:54:30,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:54:31,468 INFO L124 PetriNetUnfolderBase]: 1980/3597 cut-off events. [2024-02-20 11:54:31,468 INFO L125 PetriNetUnfolderBase]: For 3353/3353 co-relation queries the response was YES. [2024-02-20 11:54:31,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63956 conditions, 3597 events. 1980/3597 cut-off events. For 3353/3353 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 22946 event pairs, 83 based on Foata normal form. 0/3113 useless extension candidates. Maximal degree in co-relation 19058. Up to 3134 conditions per place. [2024-02-20 11:54:31,499 INFO L140 encePairwiseOnDemand]: 27/35 looper letters, 463 selfloop transitions, 25 changer transitions 349/869 dead transitions. [2024-02-20 11:54:31,499 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 869 transitions, 31282 flow [2024-02-20 11:54:31,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-20 11:54:31,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-20 11:54:31,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 97 transitions. [2024-02-20 11:54:31,500 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.46190476190476193 [2024-02-20 11:54:31,500 INFO L308 CegarLoopForPetriNet]: 31 programPoint places, 143 predicate places. [2024-02-20 11:54:31,500 INFO L507 AbstractCegarLoop]: Abstraction has has 174 places, 869 transitions, 31282 flow [2024-02-20 11:54:31,500 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:54:31,500 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:54:31,500 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] [2024-02-20 11:54:31,501 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-02-20 11:54:31,501 INFO L432 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:54:31,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:54:31,501 INFO L85 PathProgramCache]: Analyzing trace with hash 1100509186, now seen corresponding path program 1 times [2024-02-20 11:54:31,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:54:31,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138915482] [2024-02-20 11:54:31,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:54:31,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:54:31,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:54:31,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:31,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:54:31,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138915482] [2024-02-20 11:54:31,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138915482] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 11:54:31,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-20 11:54:31,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-20 11:54:31,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781817638] [2024-02-20 11:54:31,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:54:31,565 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-20 11:54:31,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:54:31,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-20 11:54:31,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-02-20 11:54:31,567 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 35 [2024-02-20 11:54:31,567 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 869 transitions, 31282 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:54:31,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:54:31,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 35 [2024-02-20 11:54:31,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:54:32,273 INFO L124 PetriNetUnfolderBase]: 1694/3157 cut-off events. [2024-02-20 11:54:32,273 INFO L125 PetriNetUnfolderBase]: For 4616/4616 co-relation queries the response was YES. [2024-02-20 11:54:32,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59078 conditions, 3157 events. 1694/3157 cut-off events. For 4616/4616 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 20215 event pairs, 71 based on Foata normal form. 0/2801 useless extension candidates. Maximal degree in co-relation 20074. Up to 2712 conditions per place. [2024-02-20 11:54:32,297 INFO L140 encePairwiseOnDemand]: 27/35 looper letters, 271 selfloop transitions, 2 changer transitions 523/814 dead transitions. [2024-02-20 11:54:32,297 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 814 transitions, 30867 flow [2024-02-20 11:54:32,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-20 11:54:32,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-20 11:54:32,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 90 transitions. [2024-02-20 11:54:32,298 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-02-20 11:54:32,299 INFO L308 CegarLoopForPetriNet]: 31 programPoint places, 148 predicate places. [2024-02-20 11:54:32,299 INFO L507 AbstractCegarLoop]: Abstraction has has 179 places, 814 transitions, 30867 flow [2024-02-20 11:54:32,299 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:54:32,299 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:54:32,299 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] [2024-02-20 11:54:32,299 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-02-20 11:54:32,299 INFO L432 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:54:32,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:54:32,300 INFO L85 PathProgramCache]: Analyzing trace with hash -848567584, now seen corresponding path program 1 times [2024-02-20 11:54:32,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:54:32,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268516827] [2024-02-20 11:54:32,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:54:32,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:54:32,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:54:32,386 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:32,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:54:32,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268516827] [2024-02-20 11:54:32,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268516827] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:54:32,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1829374159] [2024-02-20 11:54:32,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:54:32,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:54:32,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:54:32,388 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 11:54:32,390 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-02-20 11:54:32,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:54:32,470 INFO L262 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 10 conjunts are in the unsatisfiable core [2024-02-20 11:54:32,471 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:54:32,530 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:32,531 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:54:32,589 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:32,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1829374159] provided 1 perfect and 1 imperfect interpolant sequences [2024-02-20 11:54:32,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-02-20 11:54:32,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 13 [2024-02-20 11:54:32,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863432957] [2024-02-20 11:54:32,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:54:32,590 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-20 11:54:32,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:54:32,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-20 11:54:32,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-02-20 11:54:32,590 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 35 [2024-02-20 11:54:32,591 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 814 transitions, 30867 flow. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:54:32,591 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:54:32,591 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 35 [2024-02-20 11:54:32,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:54:33,377 INFO L124 PetriNetUnfolderBase]: 1556/2915 cut-off events. [2024-02-20 11:54:33,378 INFO L125 PetriNetUnfolderBase]: For 5910/5910 co-relation queries the response was YES. [2024-02-20 11:54:33,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57250 conditions, 2915 events. 1556/2915 cut-off events. For 5910/5910 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 18451 event pairs, 43 based on Foata normal form. 0/2605 useless extension candidates. Maximal degree in co-relation 21090. Up to 2479 conditions per place. [2024-02-20 11:54:33,405 INFO L140 encePairwiseOnDemand]: 25/35 looper letters, 254 selfloop transitions, 29 changer transitions 515/814 dead transitions. [2024-02-20 11:54:33,405 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 814 transitions, 32439 flow [2024-02-20 11:54:33,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-20 11:54:33,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-20 11:54:33,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 140 transitions. [2024-02-20 11:54:33,406 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-02-20 11:54:33,407 INFO L308 CegarLoopForPetriNet]: 31 programPoint places, 155 predicate places. [2024-02-20 11:54:33,407 INFO L507 AbstractCegarLoop]: Abstraction has has 186 places, 814 transitions, 32439 flow [2024-02-20 11:54:33,407 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:54:33,407 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:54:33,407 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] [2024-02-20 11:54:33,420 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-02-20 11:54:33,620 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:54:33,621 INFO L432 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:54:33,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:54:33,621 INFO L85 PathProgramCache]: Analyzing trace with hash 75526233, now seen corresponding path program 1 times [2024-02-20 11:54:33,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:54:33,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882915297] [2024-02-20 11:54:33,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:54:33,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:54:33,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:54:33,687 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-20 11:54:33,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:54:33,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882915297] [2024-02-20 11:54:33,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882915297] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 11:54:33,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-20 11:54:33,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-20 11:54:33,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036925791] [2024-02-20 11:54:33,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:54:33,688 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-20 11:54:33,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:54:33,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-20 11:54:33,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-02-20 11:54:33,688 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 35 [2024-02-20 11:54:33,688 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 814 transitions, 32439 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:54:33,688 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:54:33,689 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 35 [2024-02-20 11:54:33,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:54:34,311 INFO L124 PetriNetUnfolderBase]: 1330/2559 cut-off events. [2024-02-20 11:54:34,311 INFO L125 PetriNetUnfolderBase]: For 7541/7541 co-relation queries the response was YES. [2024-02-20 11:54:34,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52599 conditions, 2559 events. 1330/2559 cut-off events. For 7541/7541 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 16221 event pairs, 35 based on Foata normal form. 0/2349 useless extension candidates. Maximal degree in co-relation 15204. Up to 2135 conditions per place. [2024-02-20 11:54:34,335 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 182 selfloop transitions, 13 changer transitions 544/753 dead transitions. [2024-02-20 11:54:34,335 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 753 transitions, 31416 flow [2024-02-20 11:54:34,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-20 11:54:34,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-20 11:54:34,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 88 transitions. [2024-02-20 11:54:34,337 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5028571428571429 [2024-02-20 11:54:34,337 INFO L308 CegarLoopForPetriNet]: 31 programPoint places, 158 predicate places. [2024-02-20 11:54:34,337 INFO L507 AbstractCegarLoop]: Abstraction has has 189 places, 753 transitions, 31416 flow [2024-02-20 11:54:34,337 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:54:34,338 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:54:34,338 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] [2024-02-20 11:54:34,338 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-02-20 11:54:34,338 INFO L432 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:54:34,338 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:54:34,338 INFO L85 PathProgramCache]: Analyzing trace with hash -360222979, now seen corresponding path program 1 times [2024-02-20 11:54:34,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:54:34,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416080139] [2024-02-20 11:54:34,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:54:34,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:54:34,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:54:34,418 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-20 11:54:34,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:54:34,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416080139] [2024-02-20 11:54:34,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416080139] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 11:54:34,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-20 11:54:34,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-20 11:54:34,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798192674] [2024-02-20 11:54:34,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:54:34,419 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-20 11:54:34,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:54:34,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-20 11:54:34,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-02-20 11:54:34,420 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 35 [2024-02-20 11:54:34,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 753 transitions, 31416 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:54:34,420 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:54:34,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 35 [2024-02-20 11:54:34,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:54:34,985 INFO L124 PetriNetUnfolderBase]: 1187/2339 cut-off events. [2024-02-20 11:54:34,986 INFO L125 PetriNetUnfolderBase]: For 9428/9428 co-relation queries the response was YES. [2024-02-20 11:54:34,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50218 conditions, 2339 events. 1187/2339 cut-off events. For 9428/9428 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 14926 event pairs, 27 based on Foata normal form. 0/2193 useless extension candidates. Maximal degree in co-relation 12442. Up to 1924 conditions per place. [2024-02-20 11:54:35,005 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 97 selfloop transitions, 2 changer transitions 624/731 dead transitions. [2024-02-20 11:54:35,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 731 transitions, 31892 flow [2024-02-20 11:54:35,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-20 11:54:35,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-20 11:54:35,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 81 transitions. [2024-02-20 11:54:35,006 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.46285714285714286 [2024-02-20 11:54:35,007 INFO L308 CegarLoopForPetriNet]: 31 programPoint places, 162 predicate places. [2024-02-20 11:54:35,007 INFO L507 AbstractCegarLoop]: Abstraction has has 193 places, 731 transitions, 31892 flow [2024-02-20 11:54:35,007 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:54:35,007 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:54:35,007 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] [2024-02-20 11:54:35,007 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-02-20 11:54:35,008 INFO L432 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:54:35,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:54:35,008 INFO L85 PathProgramCache]: Analyzing trace with hash -965041349, now seen corresponding path program 1 times [2024-02-20 11:54:35,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:54:35,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522936580] [2024-02-20 11:54:35,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:54:35,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:54:35,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:54:35,093 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:35,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:54:35,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522936580] [2024-02-20 11:54:35,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522936580] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:54:35,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [237219168] [2024-02-20 11:54:35,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:54:35,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:54:35,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:54:35,095 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 11:54:35,096 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-02-20 11:54:35,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:54:35,172 INFO L262 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 10 conjunts are in the unsatisfiable core [2024-02-20 11:54:35,173 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:54:35,220 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:35,220 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:54:35,270 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:35,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [237219168] provided 1 perfect and 1 imperfect interpolant sequences [2024-02-20 11:54:35,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-02-20 11:54:35,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 13 [2024-02-20 11:54:35,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483017462] [2024-02-20 11:54:35,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:54:35,271 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-20 11:54:35,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:54:35,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-20 11:54:35,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2024-02-20 11:54:35,272 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 35 [2024-02-20 11:54:35,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 731 transitions, 31892 flow. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:54:35,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:54:35,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 35 [2024-02-20 11:54:35,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:54:35,948 INFO L124 PetriNetUnfolderBase]: 1239/2431 cut-off events. [2024-02-20 11:54:35,948 INFO L125 PetriNetUnfolderBase]: For 11842/11842 co-relation queries the response was YES. [2024-02-20 11:54:35,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54490 conditions, 2431 events. 1239/2431 cut-off events. For 11842/11842 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 15447 event pairs, 19 based on Foata normal form. 0/2281 useless extension candidates. Maximal degree in co-relation 15077. Up to 2014 conditions per place. [2024-02-20 11:54:35,972 INFO L140 encePairwiseOnDemand]: 25/35 looper letters, 109 selfloop transitions, 27 changer transitions 624/768 dead transitions. [2024-02-20 11:54:35,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 768 transitions, 34994 flow [2024-02-20 11:54:35,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-20 11:54:35,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-20 11:54:35,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 117 transitions. [2024-02-20 11:54:35,973 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4775510204081633 [2024-02-20 11:54:35,974 INFO L308 CegarLoopForPetriNet]: 31 programPoint places, 168 predicate places. [2024-02-20 11:54:35,974 INFO L507 AbstractCegarLoop]: Abstraction has has 199 places, 768 transitions, 34994 flow [2024-02-20 11:54:35,974 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:54:35,974 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:54:35,974 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] [2024-02-20 11:54:35,985 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-02-20 11:54:36,175 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:54:36,175 INFO L432 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:54:36,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:54:36,175 INFO L85 PathProgramCache]: Analyzing trace with hash -715150504, now seen corresponding path program 1 times [2024-02-20 11:54:36,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:54:36,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459131886] [2024-02-20 11:54:36,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:54:36,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:54:36,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:54:36,899 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:36,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:54:36,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459131886] [2024-02-20 11:54:36,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459131886] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:54:36,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [30909685] [2024-02-20 11:54:36,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:54:36,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:54:36,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:54:36,900 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 11:54:36,920 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-02-20 11:54:36,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:54:36,990 INFO L262 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 40 conjunts are in the unsatisfiable core [2024-02-20 11:54:36,991 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:54:37,336 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2024-02-20 11:54:37,337 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 52 [2024-02-20 11:54:37,414 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:37,414 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:54:37,781 INFO L349 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2024-02-20 11:54:37,781 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 98 treesize of output 82 [2024-02-20 11:54:37,839 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-20 11:54:37,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [30909685] provided 1 perfect and 1 imperfect interpolant sequences [2024-02-20 11:54:37,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-02-20 11:54:37,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13, 13] total 33 [2024-02-20 11:54:37,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997892836] [2024-02-20 11:54:37,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:54:37,841 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-20 11:54:37,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:54:37,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-20 11:54:37,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=947, Unknown=0, NotChecked=0, Total=1056 [2024-02-20 11:54:37,852 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 35 [2024-02-20 11:54:37,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 768 transitions, 34994 flow. Second operand has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:54:37,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:54:37,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 35 [2024-02-20 11:54:37,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:54:39,470 INFO L124 PetriNetUnfolderBase]: 1428/2762 cut-off events. [2024-02-20 11:54:39,470 INFO L125 PetriNetUnfolderBase]: For 11874/11874 co-relation queries the response was YES. [2024-02-20 11:54:39,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64765 conditions, 2762 events. 1428/2762 cut-off events. For 11874/11874 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 17602 event pairs, 23 based on Foata normal form. 1/2565 useless extension candidates. Maximal degree in co-relation 23132. Up to 2334 conditions per place. [2024-02-20 11:54:39,499 INFO L140 encePairwiseOnDemand]: 20/35 looper letters, 187 selfloop transitions, 41 changer transitions 638/867 dead transitions. [2024-02-20 11:54:39,499 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 867 transitions, 41213 flow [2024-02-20 11:54:39,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-02-20 11:54:39,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-02-20 11:54:39,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 187 transitions. [2024-02-20 11:54:39,501 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.3339285714285714 [2024-02-20 11:54:39,502 INFO L308 CegarLoopForPetriNet]: 31 programPoint places, 183 predicate places. [2024-02-20 11:54:39,502 INFO L507 AbstractCegarLoop]: Abstraction has has 214 places, 867 transitions, 41213 flow [2024-02-20 11:54:39,502 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:54:39,502 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:54:39,502 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] [2024-02-20 11:54:39,515 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-02-20 11:54:39,708 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:54:39,708 INFO L432 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:54:39,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:54:39,709 INFO L85 PathProgramCache]: Analyzing trace with hash 404149296, now seen corresponding path program 2 times [2024-02-20 11:54:39,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:54:39,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495459717] [2024-02-20 11:54:39,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:54:39,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:54:39,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:54:40,376 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:40,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:54:40,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495459717] [2024-02-20 11:54:40,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495459717] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:54:40,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1432776461] [2024-02-20 11:54:40,377 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-20 11:54:40,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:54:40,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:54:40,378 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 11:54:40,395 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-02-20 11:54:40,474 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-02-20 11:54:40,475 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:54:40,476 INFO L262 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 22 conjunts are in the unsatisfiable core [2024-02-20 11:54:40,477 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:54:40,595 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2024-02-20 11:54:40,595 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 52 [2024-02-20 11:54:40,685 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-20 11:54:40,685 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-02-20 11:54:40,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1432776461] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 11:54:40,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-02-20 11:54:40,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13] total 21 [2024-02-20 11:54:40,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502410203] [2024-02-20 11:54:40,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:54:40,688 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-20 11:54:40,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:54:40,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-20 11:54:40,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2024-02-20 11:54:40,692 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 35 [2024-02-20 11:54:40,692 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 867 transitions, 41213 flow. Second operand has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:54:40,692 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:54:40,692 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 35 [2024-02-20 11:54:40,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:54:41,770 INFO L124 PetriNetUnfolderBase]: 1458/2823 cut-off events. [2024-02-20 11:54:41,770 INFO L125 PetriNetUnfolderBase]: For 11882/11882 co-relation queries the response was YES. [2024-02-20 11:54:41,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69056 conditions, 2823 events. 1458/2823 cut-off events. For 11882/11882 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 18081 event pairs, 19 based on Foata normal form. 1/2620 useless extension candidates. Maximal degree in co-relation 25625. Up to 2395 conditions per place. [2024-02-20 11:54:41,801 INFO L140 encePairwiseOnDemand]: 25/35 looper letters, 206 selfloop transitions, 25 changer transitions 657/889 dead transitions. [2024-02-20 11:54:41,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 889 transitions, 44060 flow [2024-02-20 11:54:41,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-02-20 11:54:41,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-02-20 11:54:41,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 150 transitions. [2024-02-20 11:54:41,802 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.32967032967032966 [2024-02-20 11:54:41,803 INFO L308 CegarLoopForPetriNet]: 31 programPoint places, 195 predicate places. [2024-02-20 11:54:41,803 INFO L507 AbstractCegarLoop]: Abstraction has has 226 places, 889 transitions, 44060 flow [2024-02-20 11:54:41,803 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:54:41,803 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:54:41,803 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] [2024-02-20 11:54:41,813 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-02-20 11:54:42,003 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,SelfDestructingSolverStorable23 [2024-02-20 11:54:42,004 INFO L432 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:54:42,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:54:42,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1297057534, now seen corresponding path program 3 times [2024-02-20 11:54:42,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:54:42,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681592695] [2024-02-20 11:54:42,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:54:42,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:54:42,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:54:42,612 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:42,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:54:42,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681592695] [2024-02-20 11:54:42,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681592695] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:54:42,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [793200227] [2024-02-20 11:54:42,613 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-02-20 11:54:42,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:54:42,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:54:42,614 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 11:54:42,615 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-02-20 11:54:42,704 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-02-20 11:54:42,705 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:54:42,706 INFO L262 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 22 conjunts are in the unsatisfiable core [2024-02-20 11:54:42,709 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:54:42,795 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2024-02-20 11:54:42,795 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 52 [2024-02-20 11:54:42,879 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-20 11:54:42,879 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-02-20 11:54:42,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [793200227] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 11:54:42,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-02-20 11:54:42,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [14] total 22 [2024-02-20 11:54:42,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829938393] [2024-02-20 11:54:42,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:54:42,880 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-20 11:54:42,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:54:42,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-20 11:54:42,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=394, Unknown=0, NotChecked=0, Total=462 [2024-02-20 11:54:42,884 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 35 [2024-02-20 11:54:42,884 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 889 transitions, 44060 flow. Second operand has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:54:42,884 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:54:42,884 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 35 [2024-02-20 11:54:42,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:54:43,985 INFO L124 PetriNetUnfolderBase]: 1605/3069 cut-off events. [2024-02-20 11:54:43,985 INFO L125 PetriNetUnfolderBase]: For 11935/11935 co-relation queries the response was YES. [2024-02-20 11:54:43,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78278 conditions, 3069 events. 1605/3069 cut-off events. For 11935/11935 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 19830 event pairs, 19 based on Foata normal form. 1/2846 useless extension candidates. Maximal degree in co-relation 29927. Up to 2641 conditions per place. [2024-02-20 11:54:44,012 INFO L140 encePairwiseOnDemand]: 25/35 looper letters, 229 selfloop transitions, 34 changer transitions 712/976 dead transitions. [2024-02-20 11:54:44,013 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 976 transitions, 50372 flow [2024-02-20 11:54:44,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-20 11:54:44,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-20 11:54:44,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-02-20 11:54:44,013 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.3342857142857143 [2024-02-20 11:54:44,014 INFO L308 CegarLoopForPetriNet]: 31 programPoint places, 204 predicate places. [2024-02-20 11:54:44,014 INFO L507 AbstractCegarLoop]: Abstraction has has 235 places, 976 transitions, 50372 flow [2024-02-20 11:54:44,014 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:54:44,014 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:54:44,014 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] [2024-02-20 11:54:44,027 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-02-20 11:54:44,221 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:54:44,222 INFO L432 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:54:44,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:54:44,222 INFO L85 PathProgramCache]: Analyzing trace with hash -177682362, now seen corresponding path program 4 times [2024-02-20 11:54:44,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:54:44,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079104683] [2024-02-20 11:54:44,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:54:44,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:54:44,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:54:44,826 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:44,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:54:44,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079104683] [2024-02-20 11:54:44,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079104683] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:54:44,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [589808489] [2024-02-20 11:54:44,826 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-02-20 11:54:44,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:54:44,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:54:44,827 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 11:54:44,828 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-02-20 11:54:44,912 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-02-20 11:54:44,912 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:54:44,914 INFO L262 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 38 conjunts are in the unsatisfiable core [2024-02-20 11:54:44,915 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:54:45,208 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-02-20 11:54:45,209 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 47 [2024-02-20 11:54:45,281 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-20 11:54:45,281 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:54:45,586 INFO L349 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2024-02-20 11:54:45,587 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 103 treesize of output 71 [2024-02-20 11:54:45,648 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-20 11:54:45,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [589808489] provided 1 perfect and 1 imperfect interpolant sequences [2024-02-20 11:54:45,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-02-20 11:54:45,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13, 13] total 33 [2024-02-20 11:54:45,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694521442] [2024-02-20 11:54:45,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:54:45,650 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-20 11:54:45,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:54:45,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-20 11:54:45,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=908, Unknown=0, NotChecked=0, Total=1056 [2024-02-20 11:54:45,662 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 35 [2024-02-20 11:54:45,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 976 transitions, 50372 flow. Second operand has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:54:45,663 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:54:45,663 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 35 [2024-02-20 11:54:45,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:54:47,187 INFO L124 PetriNetUnfolderBase]: 1640/3141 cut-off events. [2024-02-20 11:54:47,187 INFO L125 PetriNetUnfolderBase]: For 11899/11899 co-relation queries the response was YES. [2024-02-20 11:54:47,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83293 conditions, 3141 events. 1640/3141 cut-off events. For 11899/11899 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 20363 event pairs, 31 based on Foata normal form. 1/2914 useless extension candidates. Maximal degree in co-relation 33020. Up to 2713 conditions per place. [2024-02-20 11:54:47,223 INFO L140 encePairwiseOnDemand]: 22/35 looper letters, 224 selfloop transitions, 55 changer transitions 723/1003 dead transitions. [2024-02-20 11:54:47,224 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 1003 transitions, 53789 flow [2024-02-20 11:54:47,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-02-20 11:54:47,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-02-20 11:54:47,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 171 transitions. [2024-02-20 11:54:47,225 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.3489795918367347 [2024-02-20 11:54:47,225 INFO L308 CegarLoopForPetriNet]: 31 programPoint places, 217 predicate places. [2024-02-20 11:54:47,225 INFO L507 AbstractCegarLoop]: Abstraction has has 248 places, 1003 transitions, 53789 flow [2024-02-20 11:54:47,225 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:54:47,225 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:54:47,225 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] [2024-02-20 11:54:47,238 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-02-20 11:54:47,429 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:54:47,430 INFO L432 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:54:47,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:54:47,430 INFO L85 PathProgramCache]: Analyzing trace with hash -1439000384, now seen corresponding path program 5 times [2024-02-20 11:54:47,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:54:47,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000756448] [2024-02-20 11:54:47,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:54:47,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:54:47,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:54:47,961 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:47,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:54:47,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000756448] [2024-02-20 11:54:47,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000756448] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:54:47,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [117663872] [2024-02-20 11:54:47,962 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-02-20 11:54:47,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:54:47,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:54:47,963 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 11:54:47,965 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-02-20 11:54:48,049 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-20 11:54:48,049 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:54:48,051 INFO L262 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 50 conjunts are in the unsatisfiable core [2024-02-20 11:54:48,052 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:54:48,324 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-02-20 11:54:48,324 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 47 [2024-02-20 11:54:48,435 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:48,436 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:54:48,807 INFO L349 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2024-02-20 11:54:48,808 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 103 treesize of output 71 [2024-02-20 11:54:48,860 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-20 11:54:48,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [117663872] provided 1 perfect and 1 imperfect interpolant sequences [2024-02-20 11:54:48,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-02-20 11:54:48,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13, 13] total 33 [2024-02-20 11:54:48,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540986532] [2024-02-20 11:54:48,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:54:48,860 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-20 11:54:48,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:54:48,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-20 11:54:48,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=920, Unknown=0, NotChecked=0, Total=1056 [2024-02-20 11:54:48,869 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 35 [2024-02-20 11:54:48,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 1003 transitions, 53789 flow. Second operand has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:54:48,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:54:48,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 35 [2024-02-20 11:54:48,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:54:50,660 INFO L124 PetriNetUnfolderBase]: 1656/3187 cut-off events. [2024-02-20 11:54:50,660 INFO L125 PetriNetUnfolderBase]: For 11959/11959 co-relation queries the response was YES. [2024-02-20 11:54:50,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87726 conditions, 3187 events. 1656/3187 cut-off events. For 11959/11959 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 20833 event pairs, 23 based on Foata normal form. 1/2960 useless extension candidates. Maximal degree in co-relation 35500. Up to 2759 conditions per place. [2024-02-20 11:54:50,692 INFO L140 encePairwiseOnDemand]: 22/35 looper letters, 219 selfloop transitions, 52 changer transitions 746/1018 dead transitions. [2024-02-20 11:54:50,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 1018 transitions, 56645 flow [2024-02-20 11:54:50,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-02-20 11:54:50,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-02-20 11:54:50,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 186 transitions. [2024-02-20 11:54:50,694 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.33214285714285713 [2024-02-20 11:54:50,694 INFO L308 CegarLoopForPetriNet]: 31 programPoint places, 232 predicate places. [2024-02-20 11:54:50,694 INFO L507 AbstractCegarLoop]: Abstraction has has 263 places, 1018 transitions, 56645 flow [2024-02-20 11:54:50,694 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:54:50,694 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:54:50,694 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] [2024-02-20 11:54:50,707 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-02-20 11:54:50,895 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:54:50,895 INFO L432 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:54:50,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:54:50,895 INFO L85 PathProgramCache]: Analyzing trace with hash -1844190894, now seen corresponding path program 6 times [2024-02-20 11:54:50,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:54:50,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404803063] [2024-02-20 11:54:50,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:54:50,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:54:50,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:54:51,491 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:51,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:54:51,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404803063] [2024-02-20 11:54:51,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404803063] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:54:51,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [79966998] [2024-02-20 11:54:51,492 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-02-20 11:54:51,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:54:51,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:54:51,493 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 11:54:51,494 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-02-20 11:54:51,575 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-02-20 11:54:51,575 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:54:51,576 INFO L262 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 22 conjunts are in the unsatisfiable core [2024-02-20 11:54:51,576 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:54:51,669 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2024-02-20 11:54:51,669 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 52 [2024-02-20 11:54:51,800 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-20 11:54:51,801 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-02-20 11:54:51,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [79966998] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 11:54:51,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-02-20 11:54:51,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13] total 21 [2024-02-20 11:54:51,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485557021] [2024-02-20 11:54:51,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:54:51,802 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-20 11:54:51,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:54:51,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-20 11:54:51,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=357, Unknown=0, NotChecked=0, Total=420 [2024-02-20 11:54:51,806 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 35 [2024-02-20 11:54:51,806 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 1018 transitions, 56645 flow. Second operand has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:54:51,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:54:51,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 35 [2024-02-20 11:54:51,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:54:53,122 INFO L124 PetriNetUnfolderBase]: 1686/3248 cut-off events. [2024-02-20 11:54:53,123 INFO L125 PetriNetUnfolderBase]: For 11919/11919 co-relation queries the response was YES. [2024-02-20 11:54:53,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92686 conditions, 3248 events. 1686/3248 cut-off events. For 11919/11919 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 21328 event pairs, 19 based on Foata normal form. 1/3015 useless extension candidates. Maximal degree in co-relation 38533. Up to 2820 conditions per place. [2024-02-20 11:54:53,164 INFO L140 encePairwiseOnDemand]: 25/35 looper letters, 241 selfloop transitions, 33 changer transitions 765/1040 dead transitions. [2024-02-20 11:54:53,164 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 1040 transitions, 59970 flow [2024-02-20 11:54:53,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-02-20 11:54:53,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-02-20 11:54:53,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 136 transitions. [2024-02-20 11:54:53,165 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.3238095238095238 [2024-02-20 11:54:53,165 INFO L308 CegarLoopForPetriNet]: 31 programPoint places, 243 predicate places. [2024-02-20 11:54:53,165 INFO L507 AbstractCegarLoop]: Abstraction has has 274 places, 1040 transitions, 59970 flow [2024-02-20 11:54:53,165 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:54:53,165 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:54:53,166 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] [2024-02-20 11:54:53,176 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-02-20 11:54:53,372 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,SelfDestructingSolverStorable27 [2024-02-20 11:54:53,372 INFO L432 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:54:53,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:54:53,373 INFO L85 PathProgramCache]: Analyzing trace with hash 802786160, now seen corresponding path program 7 times [2024-02-20 11:54:53,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:54:53,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949085507] [2024-02-20 11:54:53,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:54:53,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:54:53,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:54:53,981 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:53,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:54:53,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949085507] [2024-02-20 11:54:53,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949085507] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:54:53,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [390302977] [2024-02-20 11:54:53,982 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-02-20 11:54:53,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:54:53,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:54:53,983 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 11:54:53,983 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-02-20 11:54:54,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:54:54,068 INFO L262 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 40 conjunts are in the unsatisfiable core [2024-02-20 11:54:54,069 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:54:54,329 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2024-02-20 11:54:54,329 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 52 [2024-02-20 11:54:54,396 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:54,396 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:54:54,708 INFO L349 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2024-02-20 11:54:54,708 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 103 treesize of output 71 [2024-02-20 11:54:54,761 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-20 11:54:54,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [390302977] provided 1 perfect and 1 imperfect interpolant sequences [2024-02-20 11:54:54,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-02-20 11:54:54,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13, 13] total 33 [2024-02-20 11:54:54,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202759927] [2024-02-20 11:54:54,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:54:54,762 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-20 11:54:54,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:54:54,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-20 11:54:54,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=943, Unknown=0, NotChecked=0, Total=1056 [2024-02-20 11:54:54,771 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 35 [2024-02-20 11:54:54,771 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 1040 transitions, 59970 flow. Second operand has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:54:54,772 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:54:54,772 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 35 [2024-02-20 11:54:54,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:54:56,651 INFO L124 PetriNetUnfolderBase]: 1863/3534 cut-off events. [2024-02-20 11:54:56,652 INFO L125 PetriNetUnfolderBase]: For 10946/10946 co-relation queries the response was YES. [2024-02-20 11:54:56,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104486 conditions, 3534 events. 1863/3534 cut-off events. For 10946/10946 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 23076 event pairs, 23 based on Foata normal form. 1/3247 useless extension candidates. Maximal degree in co-relation 48404. Up to 3102 conditions per place. [2024-02-20 11:54:56,683 INFO L140 encePairwiseOnDemand]: 22/35 looper letters, 287 selfloop transitions, 81 changer transitions 778/1147 dead transitions. [2024-02-20 11:54:56,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 1147 transitions, 68396 flow [2024-02-20 11:54:56,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-02-20 11:54:56,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-02-20 11:54:56,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 178 transitions. [2024-02-20 11:54:56,685 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.33904761904761904 [2024-02-20 11:54:56,685 INFO L308 CegarLoopForPetriNet]: 31 programPoint places, 257 predicate places. [2024-02-20 11:54:56,685 INFO L507 AbstractCegarLoop]: Abstraction has has 288 places, 1147 transitions, 68396 flow [2024-02-20 11:54:56,686 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:54:56,686 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:54:56,686 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] [2024-02-20 11:54:56,704 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-02-20 11:54:56,896 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,SelfDestructingSolverStorable28 [2024-02-20 11:54:56,896 INFO L432 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:54:56,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:54:56,897 INFO L85 PathProgramCache]: Analyzing trace with hash -2094504018, now seen corresponding path program 8 times [2024-02-20 11:54:56,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:54:56,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761390925] [2024-02-20 11:54:56,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:54:56,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:54:56,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:54:57,467 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:57,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:54:57,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761390925] [2024-02-20 11:54:57,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761390925] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:54:57,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1439069150] [2024-02-20 11:54:57,468 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-20 11:54:57,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:54:57,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:54:57,470 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 11:54:57,480 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-02-20 11:54:57,562 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-02-20 11:54:57,563 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:54:57,564 INFO L262 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 22 conjunts are in the unsatisfiable core [2024-02-20 11:54:57,565 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:54:57,704 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2024-02-20 11:54:57,704 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 52 [2024-02-20 11:54:57,771 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-20 11:54:57,771 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-02-20 11:54:57,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1439069150] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 11:54:57,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-02-20 11:54:57,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13] total 21 [2024-02-20 11:54:57,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764343360] [2024-02-20 11:54:57,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:54:57,772 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-20 11:54:57,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:54:57,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-20 11:54:57,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=361, Unknown=0, NotChecked=0, Total=420 [2024-02-20 11:54:57,778 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 35 [2024-02-20 11:54:57,778 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 1147 transitions, 68396 flow. Second operand has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:54:57,778 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:54:57,778 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 35 [2024-02-20 11:54:57,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:54:59,484 INFO L124 PetriNetUnfolderBase]: 1902/3610 cut-off events. [2024-02-20 11:54:59,484 INFO L125 PetriNetUnfolderBase]: For 10964/10964 co-relation queries the response was YES. [2024-02-20 11:54:59,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110378 conditions, 3610 events. 1902/3610 cut-off events. For 10964/10964 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 23711 event pairs, 23 based on Foata normal form. 1/3317 useless extension candidates. Maximal degree in co-relation 52365. Up to 3178 conditions per place. [2024-02-20 11:54:59,526 INFO L140 encePairwiseOnDemand]: 25/35 looper letters, 325 selfloop transitions, 63 changer transitions 789/1178 dead transitions. [2024-02-20 11:54:59,526 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 1178 transitions, 72619 flow [2024-02-20 11:54:59,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-02-20 11:54:59,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-02-20 11:54:59,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 132 transitions. [2024-02-20 11:54:59,527 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.3142857142857143 [2024-02-20 11:54:59,528 INFO L308 CegarLoopForPetriNet]: 31 programPoint places, 268 predicate places. [2024-02-20 11:54:59,528 INFO L507 AbstractCegarLoop]: Abstraction has has 299 places, 1178 transitions, 72619 flow [2024-02-20 11:54:59,528 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:54:59,528 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:54:59,528 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] [2024-02-20 11:54:59,540 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-02-20 11:54:59,732 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:54:59,732 INFO L432 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:54:59,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:54:59,733 INFO L85 PathProgramCache]: Analyzing trace with hash -1622503632, now seen corresponding path program 9 times [2024-02-20 11:54:59,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:54:59,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325061353] [2024-02-20 11:54:59,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:54:59,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:54:59,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:55:00,220 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:55:00,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:55:00,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325061353] [2024-02-20 11:55:00,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325061353] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:55:00,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [692649453] [2024-02-20 11:55:00,220 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-02-20 11:55:00,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:55:00,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:55:00,222 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 11:55:00,223 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-02-20 11:55:00,310 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-02-20 11:55:00,310 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:55:00,311 INFO L262 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 22 conjunts are in the unsatisfiable core [2024-02-20 11:55:00,312 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:55:00,419 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2024-02-20 11:55:00,419 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 52 [2024-02-20 11:55:00,505 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-20 11:55:00,505 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-02-20 11:55:00,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [692649453] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 11:55:00,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-02-20 11:55:00,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13] total 21 [2024-02-20 11:55:00,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614053040] [2024-02-20 11:55:00,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:55:00,506 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-20 11:55:00,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:55:00,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-20 11:55:00,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2024-02-20 11:55:00,511 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 35 [2024-02-20 11:55:00,511 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 1178 transitions, 72619 flow. Second operand has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:55:00,511 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:55:00,511 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 35 [2024-02-20 11:55:00,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:55:02,355 INFO L124 PetriNetUnfolderBase]: 1980/3788 cut-off events. [2024-02-20 11:55:02,355 INFO L125 PetriNetUnfolderBase]: For 11399/11399 co-relation queries the response was YES. [2024-02-20 11:55:02,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119566 conditions, 3788 events. 1980/3788 cut-off events. For 11399/11399 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 25249 event pairs, 19 based on Foata normal form. 1/3483 useless extension candidates. Maximal degree in co-relation 59422. Up to 3349 conditions per place. [2024-02-20 11:55:02,406 INFO L140 encePairwiseOnDemand]: 25/35 looper letters, 379 selfloop transitions, 60 changer transitions 808/1248 dead transitions. [2024-02-20 11:55:02,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 1248 transitions, 79471 flow [2024-02-20 11:55:02,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-02-20 11:55:02,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-02-20 11:55:02,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 144 transitions. [2024-02-20 11:55:02,407 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.31648351648351647 [2024-02-20 11:55:02,407 INFO L308 CegarLoopForPetriNet]: 31 programPoint places, 280 predicate places. [2024-02-20 11:55:02,407 INFO L507 AbstractCegarLoop]: Abstraction has has 311 places, 1248 transitions, 79471 flow [2024-02-20 11:55:02,407 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:55:02,407 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:55:02,407 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] [2024-02-20 11:55:02,418 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-02-20 11:55:02,615 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:55:02,615 INFO L432 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:55:02,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:55:02,616 INFO L85 PathProgramCache]: Analyzing trace with hash -250685256, now seen corresponding path program 10 times [2024-02-20 11:55:02,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:55:02,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252578831] [2024-02-20 11:55:02,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:55:02,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:55:02,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:55:03,298 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:55:03,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:55:03,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252578831] [2024-02-20 11:55:03,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252578831] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:55:03,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [914690928] [2024-02-20 11:55:03,299 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-02-20 11:55:03,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:55:03,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:55:03,300 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 11:55:03,301 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-02-20 11:55:03,397 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-02-20 11:55:03,397 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:55:03,398 INFO L262 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 42 conjunts are in the unsatisfiable core [2024-02-20 11:55:03,400 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:55:03,787 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-02-20 11:55:03,788 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 47 [2024-02-20 11:55:03,840 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:55:03,840 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:55:04,187 INFO L349 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2024-02-20 11:55:04,188 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 87 treesize of output 63 [2024-02-20 11:55:04,235 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-20 11:55:04,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [914690928] provided 1 perfect and 1 imperfect interpolant sequences [2024-02-20 11:55:04,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-02-20 11:55:04,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13, 13] total 33 [2024-02-20 11:55:04,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797914049] [2024-02-20 11:55:04,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:55:04,236 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-20 11:55:04,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:55:04,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-20 11:55:04,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=912, Unknown=0, NotChecked=0, Total=1056 [2024-02-20 11:55:04,243 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 35 [2024-02-20 11:55:04,243 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 1248 transitions, 79471 flow. Second operand has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:55:04,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:55:04,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 35 [2024-02-20 11:55:04,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:55:06,795 INFO L124 PetriNetUnfolderBase]: 2065/3938 cut-off events. [2024-02-20 11:55:06,795 INFO L125 PetriNetUnfolderBase]: For 11371/11371 co-relation queries the response was YES. [2024-02-20 11:55:06,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128307 conditions, 3938 events. 2065/3938 cut-off events. For 11371/11371 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 26423 event pairs, 19 based on Foata normal form. 1/3615 useless extension candidates. Maximal degree in co-relation 66222. Up to 3499 conditions per place. [2024-02-20 11:55:06,851 INFO L140 encePairwiseOnDemand]: 22/35 looper letters, 408 selfloop transitions, 117 changer transitions 821/1347 dead transitions. [2024-02-20 11:55:06,851 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 1347 transitions, 88511 flow [2024-02-20 11:55:06,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-02-20 11:55:06,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-02-20 11:55:06,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 174 transitions. [2024-02-20 11:55:06,852 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.3551020408163265 [2024-02-20 11:55:06,852 INFO L308 CegarLoopForPetriNet]: 31 programPoint places, 293 predicate places. [2024-02-20 11:55:06,853 INFO L507 AbstractCegarLoop]: Abstraction has has 324 places, 1347 transitions, 88511 flow [2024-02-20 11:55:06,853 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:55:06,853 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:55:06,853 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] [2024-02-20 11:55:06,865 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-02-20 11:55:07,068 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:55:07,068 INFO L432 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:55:07,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:55:07,069 INFO L85 PathProgramCache]: Analyzing trace with hash 796345402, now seen corresponding path program 11 times [2024-02-20 11:55:07,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:55:07,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603964741] [2024-02-20 11:55:07,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:55:07,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:55:07,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:55:07,567 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:55:07,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:55:07,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603964741] [2024-02-20 11:55:07,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603964741] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:55:07,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1536700647] [2024-02-20 11:55:07,567 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-02-20 11:55:07,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:55:07,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:55:07,569 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 11:55:07,574 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-02-20 11:55:07,667 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-20 11:55:07,668 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:55:07,669 INFO L262 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 50 conjunts are in the unsatisfiable core [2024-02-20 11:55:07,670 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:55:07,961 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-02-20 11:55:07,961 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 47 [2024-02-20 11:55:08,079 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:55:08,079 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:55:08,541 INFO L349 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2024-02-20 11:55:08,541 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 87 treesize of output 63 [2024-02-20 11:55:08,578 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-20 11:55:08,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1536700647] provided 1 perfect and 1 imperfect interpolant sequences [2024-02-20 11:55:08,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-02-20 11:55:08,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13, 13] total 33 [2024-02-20 11:55:08,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094384293] [2024-02-20 11:55:08,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:55:08,579 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-20 11:55:08,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:55:08,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-20 11:55:08,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=925, Unknown=0, NotChecked=0, Total=1056 [2024-02-20 11:55:08,587 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 35 [2024-02-20 11:55:08,588 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 1347 transitions, 88511 flow. Second operand has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:55:08,588 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:55:08,588 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 35 [2024-02-20 11:55:08,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:55:11,506 INFO L124 PetriNetUnfolderBase]: 2125/4078 cut-off events. [2024-02-20 11:55:11,506 INFO L125 PetriNetUnfolderBase]: For 10963/10963 co-relation queries the response was YES. [2024-02-20 11:55:11,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137012 conditions, 4078 events. 2125/4078 cut-off events. For 10963/10963 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 27700 event pairs, 19 based on Foata normal form. 1/3747 useless extension candidates. Maximal degree in co-relation 72879. Up to 3639 conditions per place. [2024-02-20 11:55:11,563 INFO L140 encePairwiseOnDemand]: 22/35 looper letters, 405 selfloop transitions, 112 changer transitions 876/1394 dead transitions. [2024-02-20 11:55:11,563 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 1394 transitions, 94423 flow [2024-02-20 11:55:11,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-02-20 11:55:11,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-02-20 11:55:11,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 197 transitions. [2024-02-20 11:55:11,564 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.3310924369747899 [2024-02-20 11:55:11,564 INFO L308 CegarLoopForPetriNet]: 31 programPoint places, 309 predicate places. [2024-02-20 11:55:11,564 INFO L507 AbstractCegarLoop]: Abstraction has has 340 places, 1394 transitions, 94423 flow [2024-02-20 11:55:11,565 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:55:11,565 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:55:11,565 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] [2024-02-20 11:55:11,575 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-02-20 11:55:11,765 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-02-20 11:55:11,765 INFO L432 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:55:11,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:55:11,766 INFO L85 PathProgramCache]: Analyzing trace with hash 2037630718, now seen corresponding path program 12 times [2024-02-20 11:55:11,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:55:11,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19890742] [2024-02-20 11:55:11,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:55:11,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:55:11,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:55:12,294 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:55:12,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:55:12,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19890742] [2024-02-20 11:55:12,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19890742] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:55:12,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [603599637] [2024-02-20 11:55:12,295 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-02-20 11:55:12,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:55:12,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:55:12,295 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 11:55:12,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-02-20 11:55:12,385 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-02-20 11:55:12,385 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:55:12,386 INFO L262 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 22 conjunts are in the unsatisfiable core [2024-02-20 11:55:12,386 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:55:12,484 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2024-02-20 11:55:12,484 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 52 [2024-02-20 11:55:12,571 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-20 11:55:12,571 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-02-20 11:55:12,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [603599637] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 11:55:12,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-02-20 11:55:12,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13] total 21 [2024-02-20 11:55:12,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820339299] [2024-02-20 11:55:12,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:55:12,571 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-20 11:55:12,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:55:12,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-20 11:55:12,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=354, Unknown=0, NotChecked=0, Total=420 [2024-02-20 11:55:12,576 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 35 [2024-02-20 11:55:12,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 1394 transitions, 94423 flow. Second operand has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:55:12,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:55:12,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 35 [2024-02-20 11:55:12,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:55:14,818 INFO L124 PetriNetUnfolderBase]: 2131/4097 cut-off events. [2024-02-20 11:55:14,818 INFO L125 PetriNetUnfolderBase]: For 11394/11394 co-relation queries the response was YES. [2024-02-20 11:55:14,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141753 conditions, 4097 events. 2131/4097 cut-off events. For 11394/11394 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 27939 event pairs, 19 based on Foata normal form. 1/3766 useless extension candidates. Maximal degree in co-relation 75672. Up to 3658 conditions per place. [2024-02-20 11:55:14,877 INFO L140 encePairwiseOnDemand]: 25/35 looper letters, 422 selfloop transitions, 83 changer transitions 894/1400 dead transitions. [2024-02-20 11:55:14,877 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 1400 transitions, 97635 flow [2024-02-20 11:55:14,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-20 11:55:14,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-20 11:55:14,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 115 transitions. [2024-02-20 11:55:14,878 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.36507936507936506 [2024-02-20 11:55:14,878 INFO L308 CegarLoopForPetriNet]: 31 programPoint places, 317 predicate places. [2024-02-20 11:55:14,878 INFO L507 AbstractCegarLoop]: Abstraction has has 348 places, 1400 transitions, 97635 flow [2024-02-20 11:55:14,878 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:55:14,879 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:55:14,879 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] [2024-02-20 11:55:14,889 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2024-02-20 11:55:15,080 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-02-20 11:55:15,080 INFO L432 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:55:15,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:55:15,080 INFO L85 PathProgramCache]: Analyzing trace with hash -1377065714, now seen corresponding path program 13 times [2024-02-20 11:55:15,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:55:15,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845660359] [2024-02-20 11:55:15,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:55:15,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:55:15,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:55:15,589 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:55:15,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:55:15,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845660359] [2024-02-20 11:55:15,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845660359] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:55:15,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [291993194] [2024-02-20 11:55:15,590 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-02-20 11:55:15,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:55:15,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:55:15,591 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 11:55:15,592 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-02-20 11:55:15,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:55:15,685 INFO L262 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 40 conjunts are in the unsatisfiable core [2024-02-20 11:55:15,686 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:55:15,895 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2024-02-20 11:55:15,896 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 52 [2024-02-20 11:55:16,013 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:55:16,013 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:55:16,619 INFO L349 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2024-02-20 11:55:16,619 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 103 treesize of output 71 [2024-02-20 11:55:16,668 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-20 11:55:16,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [291993194] provided 1 perfect and 1 imperfect interpolant sequences [2024-02-20 11:55:16,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-02-20 11:55:16,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13, 13] total 33 [2024-02-20 11:55:16,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466687236] [2024-02-20 11:55:16,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:55:16,669 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-20 11:55:16,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:55:16,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-20 11:55:16,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=937, Unknown=0, NotChecked=0, Total=1056 [2024-02-20 11:55:16,678 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 35 [2024-02-20 11:55:16,678 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 1400 transitions, 97635 flow. Second operand has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:55:16,678 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:55:16,678 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 35 [2024-02-20 11:55:16,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:55:19,488 INFO L124 PetriNetUnfolderBase]: 2151/4151 cut-off events. [2024-02-20 11:55:19,488 INFO L125 PetriNetUnfolderBase]: For 11014/11014 co-relation queries the response was YES. [2024-02-20 11:55:19,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147795 conditions, 4151 events. 2151/4151 cut-off events. For 11014/11014 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 28466 event pairs, 19 based on Foata normal form. 1/3820 useless extension candidates. Maximal degree in co-relation 79727. Up to 3712 conditions per place. [2024-02-20 11:55:19,551 INFO L140 encePairwiseOnDemand]: 22/35 looper letters, 387 selfloop transitions, 101 changer transitions 929/1418 dead transitions. [2024-02-20 11:55:19,551 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 1418 transitions, 101741 flow [2024-02-20 11:55:19,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-02-20 11:55:19,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-02-20 11:55:19,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 199 transitions. [2024-02-20 11:55:19,552 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.334453781512605 [2024-02-20 11:55:19,553 INFO L308 CegarLoopForPetriNet]: 31 programPoint places, 333 predicate places. [2024-02-20 11:55:19,553 INFO L507 AbstractCegarLoop]: Abstraction has has 364 places, 1418 transitions, 101741 flow [2024-02-20 11:55:19,553 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:55:19,553 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:55:19,553 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] [2024-02-20 11:55:19,568 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2024-02-20 11:55:19,757 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-02-20 11:55:19,757 INFO L432 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:55:19,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:55:19,758 INFO L85 PathProgramCache]: Analyzing trace with hash -1609259172, now seen corresponding path program 14 times [2024-02-20 11:55:19,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:55:19,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519064380] [2024-02-20 11:55:19,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:55:19,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:55:19,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:55:20,540 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:55:20,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:55:20,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519064380] [2024-02-20 11:55:20,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519064380] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:55:20,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [865155601] [2024-02-20 11:55:20,540 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-20 11:55:20,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:55:20,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:55:20,541 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 11:55:20,543 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-02-20 11:55:20,636 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-02-20 11:55:20,636 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:55:20,637 INFO L262 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 22 conjunts are in the unsatisfiable core [2024-02-20 11:55:20,638 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:55:20,734 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2024-02-20 11:55:20,734 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 52 [2024-02-20 11:55:20,834 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-20 11:55:20,834 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-02-20 11:55:20,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [865155601] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 11:55:20,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-02-20 11:55:20,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13] total 21 [2024-02-20 11:55:20,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117343954] [2024-02-20 11:55:20,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:55:20,835 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-20 11:55:20,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:55:20,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-20 11:55:20,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=352, Unknown=0, NotChecked=0, Total=420 [2024-02-20 11:55:20,841 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 35 [2024-02-20 11:55:20,841 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 1418 transitions, 101741 flow. Second operand has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:55:20,841 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:55:20,841 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 35 [2024-02-20 11:55:20,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:55:23,496 INFO L124 PetriNetUnfolderBase]: 2187/4220 cut-off events. [2024-02-20 11:55:23,496 INFO L125 PetriNetUnfolderBase]: For 11449/11449 co-relation queries the response was YES. [2024-02-20 11:55:23,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154499 conditions, 4220 events. 2187/4220 cut-off events. For 11449/11449 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 29098 event pairs, 19 based on Foata normal form. 1/3881 useless extension candidates. Maximal degree in co-relation 84478. Up to 3781 conditions per place. [2024-02-20 11:55:23,544 INFO L140 encePairwiseOnDemand]: 25/35 looper letters, 424 selfloop transitions, 72 changer transitions 948/1445 dead transitions. [2024-02-20 11:55:23,544 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 1445 transitions, 106585 flow [2024-02-20 11:55:23,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-20 11:55:23,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-20 11:55:23,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-02-20 11:55:23,545 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.3457142857142857 [2024-02-20 11:55:23,545 INFO L308 CegarLoopForPetriNet]: 31 programPoint places, 342 predicate places. [2024-02-20 11:55:23,545 INFO L507 AbstractCegarLoop]: Abstraction has has 373 places, 1445 transitions, 106585 flow [2024-02-20 11:55:23,545 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:55:23,546 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:55:23,546 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] [2024-02-20 11:55:23,556 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2024-02-20 11:55:23,748 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:55:23,748 INFO L432 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:55:23,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:55:23,749 INFO L85 PathProgramCache]: Analyzing trace with hash -820521176, now seen corresponding path program 15 times [2024-02-20 11:55:23,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:55:23,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101847983] [2024-02-20 11:55:23,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:55:23,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:55:23,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:55:24,272 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:55:24,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:55:24,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101847983] [2024-02-20 11:55:24,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101847983] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:55:24,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [772140097] [2024-02-20 11:55:24,273 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-02-20 11:55:24,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:55:24,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:55:24,274 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 11:55:24,274 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-02-20 11:55:24,367 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-02-20 11:55:24,367 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:55:24,368 INFO L262 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 22 conjunts are in the unsatisfiable core [2024-02-20 11:55:24,369 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:55:24,518 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2024-02-20 11:55:24,519 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 52 [2024-02-20 11:55:24,567 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-20 11:55:24,567 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-02-20 11:55:24,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [772140097] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 11:55:24,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-02-20 11:55:24,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13] total 21 [2024-02-20 11:55:24,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196613576] [2024-02-20 11:55:24,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:55:24,567 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-20 11:55:24,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:55:24,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-20 11:55:24,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=353, Unknown=0, NotChecked=0, Total=420 [2024-02-20 11:55:24,570 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 35 [2024-02-20 11:55:24,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 1445 transitions, 106585 flow. Second operand has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:55:24,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:55:24,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 35 [2024-02-20 11:55:24,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:55:27,242 INFO L124 PetriNetUnfolderBase]: 2205/4277 cut-off events. [2024-02-20 11:55:27,242 INFO L125 PetriNetUnfolderBase]: For 11048/11048 co-relation queries the response was YES. [2024-02-20 11:55:27,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 160889 conditions, 4277 events. 2205/4277 cut-off events. For 11048/11048 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 29790 event pairs, 19 based on Foata normal form. 1/3938 useless extension candidates. Maximal degree in co-relation 88835. Up to 3838 conditions per place. [2024-02-20 11:55:27,301 INFO L140 encePairwiseOnDemand]: 25/35 looper letters, 415 selfloop transitions, 74 changer transitions 973/1463 dead transitions. [2024-02-20 11:55:27,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 1463 transitions, 110859 flow [2024-02-20 11:55:27,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-20 11:55:27,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-20 11:55:27,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-02-20 11:55:27,302 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.3514285714285714 [2024-02-20 11:55:27,302 INFO L308 CegarLoopForPetriNet]: 31 programPoint places, 351 predicate places. [2024-02-20 11:55:27,303 INFO L507 AbstractCegarLoop]: Abstraction has has 382 places, 1463 transitions, 110859 flow [2024-02-20 11:55:27,303 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:55:27,303 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:55:27,303 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] [2024-02-20 11:55:27,316 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2024-02-20 11:55:27,516 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-02-20 11:55:27,516 INFO L432 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:55:27,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:55:27,516 INFO L85 PathProgramCache]: Analyzing trace with hash -280561752, now seen corresponding path program 16 times [2024-02-20 11:55:27,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:55:27,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795619554] [2024-02-20 11:55:27,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:55:27,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:55:27,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:55:27,972 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:55:27,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:55:27,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795619554] [2024-02-20 11:55:27,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795619554] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:55:27,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [717733857] [2024-02-20 11:55:27,973 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-02-20 11:55:27,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:55:27,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:55:27,974 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 11:55:27,991 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-02-20 11:55:28,085 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-02-20 11:55:28,085 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:55:28,087 INFO L262 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 38 conjunts are in the unsatisfiable core [2024-02-20 11:55:28,088 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:55:28,369 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-02-20 11:55:28,369 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 47 [2024-02-20 11:55:28,468 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-20 11:55:28,468 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:55:28,864 INFO L349 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2024-02-20 11:55:28,864 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 122 treesize of output 90 [2024-02-20 11:55:28,933 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-20 11:55:28,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [717733857] provided 1 perfect and 1 imperfect interpolant sequences [2024-02-20 11:55:28,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-02-20 11:55:28,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13, 13] total 33 [2024-02-20 11:55:28,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68149574] [2024-02-20 11:55:28,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:55:28,934 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-20 11:55:28,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:55:28,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-20 11:55:28,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=907, Unknown=0, NotChecked=0, Total=1056 [2024-02-20 11:55:28,937 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 35 [2024-02-20 11:55:28,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 1463 transitions, 110859 flow. Second operand has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:55:28,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:55:28,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 35 [2024-02-20 11:55:28,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:55:32,280 INFO L124 PetriNetUnfolderBase]: 2217/4306 cut-off events. [2024-02-20 11:55:32,280 INFO L125 PetriNetUnfolderBase]: For 11428/11428 co-relation queries the response was YES. [2024-02-20 11:55:32,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166334 conditions, 4306 events. 2217/4306 cut-off events. For 11428/11428 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 30092 event pairs, 19 based on Foata normal form. 1/3967 useless extension candidates. Maximal degree in co-relation 92361. Up to 3868 conditions per place. [2024-02-20 11:55:32,348 INFO L140 encePairwiseOnDemand]: 20/35 looper letters, 379 selfloop transitions, 97 changer transitions 996/1473 dead transitions. [2024-02-20 11:55:32,349 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 1473 transitions, 114572 flow [2024-02-20 11:55:32,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-02-20 11:55:32,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-02-20 11:55:32,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 199 transitions. [2024-02-20 11:55:32,350 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.334453781512605 [2024-02-20 11:55:32,350 INFO L308 CegarLoopForPetriNet]: 31 programPoint places, 367 predicate places. [2024-02-20 11:55:32,350 INFO L507 AbstractCegarLoop]: Abstraction has has 398 places, 1473 transitions, 114572 flow [2024-02-20 11:55:32,350 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:55:32,350 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:55:32,350 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] [2024-02-20 11:55:32,360 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2024-02-20 11:55:32,551 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-02-20 11:55:32,551 INFO L432 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:55:32,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:55:32,551 INFO L85 PathProgramCache]: Analyzing trace with hash 2054944498, now seen corresponding path program 1 times [2024-02-20 11:55:32,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:55:32,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51126299] [2024-02-20 11:55:32,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:55:32,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:55:32,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:55:32,722 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-20 11:55:32,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:55:32,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51126299] [2024-02-20 11:55:32,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51126299] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:55:32,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [469232994] [2024-02-20 11:55:32,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:55:32,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:55:32,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:55:32,724 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 11:55:32,725 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-02-20 11:55:32,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:55:32,821 INFO L262 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 15 conjunts are in the unsatisfiable core [2024-02-20 11:55:32,821 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:55:32,853 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-20 11:55:32,853 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 25 [2024-02-20 11:55:32,869 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-20 11:55:32,869 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:55:32,931 INFO L349 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2024-02-20 11:55:32,932 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 32 treesize of output 48 [2024-02-20 11:55:32,954 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-20 11:55:32,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [469232994] provided 1 perfect and 1 imperfect interpolant sequences [2024-02-20 11:55:32,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-02-20 11:55:32,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9, 7] total 18 [2024-02-20 11:55:32,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644097941] [2024-02-20 11:55:32,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:55:32,955 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-20 11:55:32,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:55:32,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-20 11:55:32,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2024-02-20 11:55:32,956 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 35 [2024-02-20 11:55:32,956 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 1473 transitions, 114572 flow. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:55:32,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:55:32,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 35 [2024-02-20 11:55:32,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:55:36,277 INFO L124 PetriNetUnfolderBase]: 2386/4592 cut-off events. [2024-02-20 11:55:36,277 INFO L125 PetriNetUnfolderBase]: For 13886/13886 co-relation queries the response was YES. [2024-02-20 11:55:36,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181862 conditions, 4592 events. 2386/4592 cut-off events. For 13886/13886 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 32148 event pairs, 15 based on Foata normal form. 0/4208 useless extension candidates. Maximal degree in co-relation 106004. Up to 4153 conditions per place. [2024-02-20 11:55:36,364 INFO L140 encePairwiseOnDemand]: 25/35 looper letters, 475 selfloop transitions, 89 changer transitions 1025/1604 dead transitions. [2024-02-20 11:55:36,364 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 1604 transitions, 127936 flow [2024-02-20 11:55:36,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-02-20 11:55:36,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-02-20 11:55:36,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 171 transitions. [2024-02-20 11:55:36,365 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.44415584415584414 [2024-02-20 11:55:36,365 INFO L308 CegarLoopForPetriNet]: 31 programPoint places, 377 predicate places. [2024-02-20 11:55:36,365 INFO L507 AbstractCegarLoop]: Abstraction has has 408 places, 1604 transitions, 127936 flow [2024-02-20 11:55:36,365 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:55:36,366 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:55:36,366 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] [2024-02-20 11:55:36,378 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2024-02-20 11:55:36,568 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-02-20 11:55:36,568 INFO L432 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:55:36,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:55:36,569 INFO L85 PathProgramCache]: Analyzing trace with hash -776924584, now seen corresponding path program 2 times [2024-02-20 11:55:36,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:55:36,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295075698] [2024-02-20 11:55:36,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:55:36,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:55:36,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:55:36,763 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-20 11:55:36,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:55:36,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295075698] [2024-02-20 11:55:36,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295075698] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:55:36,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2060528123] [2024-02-20 11:55:36,764 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-20 11:55:36,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:55:36,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:55:36,765 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 11:55:36,788 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-02-20 11:55:36,895 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-20 11:55:36,896 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:55:36,897 INFO L262 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 25 conjunts are in the unsatisfiable core [2024-02-20 11:55:36,898 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:55:36,957 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-02-20 11:55:36,957 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2024-02-20 11:55:36,963 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-20 11:55:36,963 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:55:37,018 INFO L349 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2024-02-20 11:55:37,018 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 40 treesize of output 56 [2024-02-20 11:55:37,046 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-20 11:55:37,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2060528123] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 11:55:37,046 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 11:55:37,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 7] total 16 [2024-02-20 11:55:37,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200301588] [2024-02-20 11:55:37,047 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 11:55:37,047 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-02-20 11:55:37,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:55:37,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-02-20 11:55:37,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2024-02-20 11:55:37,048 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 35 [2024-02-20 11:55:37,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 1604 transitions, 127936 flow. Second operand has 16 states, 16 states have (on average 7.6875) internal successors, (123), 16 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:55:37,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:55:37,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 35 [2024-02-20 11:55:37,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:55:40,668 INFO L124 PetriNetUnfolderBase]: 2478/4732 cut-off events. [2024-02-20 11:55:40,668 INFO L125 PetriNetUnfolderBase]: For 16531/16531 co-relation queries the response was YES. [2024-02-20 11:55:40,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 192001 conditions, 4732 events. 2478/4732 cut-off events. For 16531/16531 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 33053 event pairs, 29 based on Foata normal form. 0/4320 useless extension candidates. Maximal degree in co-relation 114338. Up to 4293 conditions per place. [2024-02-20 11:55:40,752 INFO L140 encePairwiseOnDemand]: 21/35 looper letters, 531 selfloop transitions, 93 changer transitions 1025/1664 dead transitions. [2024-02-20 11:55:40,752 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 1664 transitions, 135972 flow [2024-02-20 11:55:40,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-20 11:55:40,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-20 11:55:40,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 132 transitions. [2024-02-20 11:55:40,753 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.37714285714285717 [2024-02-20 11:55:40,754 INFO L308 CegarLoopForPetriNet]: 31 programPoint places, 386 predicate places. [2024-02-20 11:55:40,754 INFO L507 AbstractCegarLoop]: Abstraction has has 417 places, 1664 transitions, 135972 flow [2024-02-20 11:55:40,754 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.6875) internal successors, (123), 16 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:55:40,754 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:55:40,754 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] [2024-02-20 11:55:40,767 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2024-02-20 11:55:40,956 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-02-20 11:55:40,956 INFO L432 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:55:40,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:55:40,957 INFO L85 PathProgramCache]: Analyzing trace with hash -223477544, now seen corresponding path program 3 times [2024-02-20 11:55:40,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:55:40,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432200669] [2024-02-20 11:55:40,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:55:40,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:55:40,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:55:41,126 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-20 11:55:41,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:55:41,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432200669] [2024-02-20 11:55:41,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432200669] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 11:55:41,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-20 11:55:41,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-20 11:55:41,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743068168] [2024-02-20 11:55:41,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:55:41,128 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-20 11:55:41,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:55:41,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-20 11:55:41,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-02-20 11:55:41,129 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 35 [2024-02-20 11:55:41,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 417 places, 1664 transitions, 135972 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:55:41,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:55:41,129 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 35 [2024-02-20 11:55:41,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:55:44,840 INFO L124 PetriNetUnfolderBase]: 2464/4718 cut-off events. [2024-02-20 11:55:44,840 INFO L125 PetriNetUnfolderBase]: For 19390/19390 co-relation queries the response was YES. [2024-02-20 11:55:44,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 195952 conditions, 4718 events. 2464/4718 cut-off events. For 19390/19390 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 33059 event pairs, 17 based on Foata normal form. 0/4320 useless extension candidates. Maximal degree in co-relation 116484. Up to 4279 conditions per place. [2024-02-20 11:55:44,921 INFO L140 encePairwiseOnDemand]: 23/35 looper letters, 493 selfloop transitions, 99 changer transitions 1056/1661 dead transitions. [2024-02-20 11:55:44,921 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 428 places, 1661 transitions, 138956 flow [2024-02-20 11:55:44,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-02-20 11:55:44,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-02-20 11:55:44,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 160 transitions. [2024-02-20 11:55:44,922 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.38095238095238093 [2024-02-20 11:55:44,923 INFO L308 CegarLoopForPetriNet]: 31 programPoint places, 397 predicate places. [2024-02-20 11:55:44,923 INFO L507 AbstractCegarLoop]: Abstraction has has 428 places, 1661 transitions, 138956 flow [2024-02-20 11:55:44,923 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:55:44,923 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:55:44,923 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] [2024-02-20 11:55:44,923 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-02-20 11:55:44,923 INFO L432 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:55:44,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:55:44,923 INFO L85 PathProgramCache]: Analyzing trace with hash 627049038, now seen corresponding path program 1 times [2024-02-20 11:55:44,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:55:44,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255641763] [2024-02-20 11:55:44,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:55:44,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:55:44,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:55:45,095 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-20 11:55:45,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:55:45,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255641763] [2024-02-20 11:55:45,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255641763] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:55:45,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1814635373] [2024-02-20 11:55:45,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:55:45,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:55:45,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:55:45,097 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 11:55:45,108 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-02-20 11:55:45,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:55:45,214 INFO L262 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 15 conjunts are in the unsatisfiable core [2024-02-20 11:55:45,214 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:55:45,251 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2024-02-20 11:55:45,251 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2024-02-20 11:55:45,259 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-20 11:55:45,259 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:55:45,320 INFO L349 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2024-02-20 11:55:45,321 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 32 treesize of output 48 [2024-02-20 11:55:45,329 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-20 11:55:45,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1814635373] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 11:55:45,329 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 11:55:45,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 17 [2024-02-20 11:55:45,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599081568] [2024-02-20 11:55:45,330 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 11:55:45,330 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-02-20 11:55:45,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:55:45,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-02-20 11:55:45,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2024-02-20 11:55:45,331 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 35 [2024-02-20 11:55:45,331 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 428 places, 1661 transitions, 138956 flow. Second operand has 17 states, 17 states have (on average 7.588235294117647) internal successors, (129), 17 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:55:45,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:55:45,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 35 [2024-02-20 11:55:45,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:55:48,977 INFO L124 PetriNetUnfolderBase]: 2520/4814 cut-off events. [2024-02-20 11:55:48,977 INFO L125 PetriNetUnfolderBase]: For 21621/21621 co-relation queries the response was YES. [2024-02-20 11:55:48,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 204609 conditions, 4814 events. 2520/4814 cut-off events. For 21621/21621 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 33808 event pairs, 13 based on Foata normal form. 0/4408 useless extension candidates. Maximal degree in co-relation 123336. Up to 4375 conditions per place. [2024-02-20 11:55:49,065 INFO L140 encePairwiseOnDemand]: 22/35 looper letters, 549 selfloop transitions, 115 changer transitions 1056/1733 dead transitions. [2024-02-20 11:55:49,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 437 places, 1733 transitions, 148390 flow [2024-02-20 11:55:49,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-20 11:55:49,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-20 11:55:49,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 142 transitions. [2024-02-20 11:55:49,066 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4057142857142857 [2024-02-20 11:55:49,066 INFO L308 CegarLoopForPetriNet]: 31 programPoint places, 406 predicate places. [2024-02-20 11:55:49,066 INFO L507 AbstractCegarLoop]: Abstraction has has 437 places, 1733 transitions, 148390 flow [2024-02-20 11:55:49,066 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 7.588235294117647) internal successors, (129), 17 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:55:49,066 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:55:49,066 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] [2024-02-20 11:55:49,077 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2024-02-20 11:55:49,266 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2024-02-20 11:55:49,267 INFO L432 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:55:49,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:55:49,267 INFO L85 PathProgramCache]: Analyzing trace with hash -2121846446, now seen corresponding path program 2 times [2024-02-20 11:55:49,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:55:49,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004826580] [2024-02-20 11:55:49,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:55:49,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:55:49,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:55:49,448 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-20 11:55:49,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:55:49,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004826580] [2024-02-20 11:55:49,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004826580] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:55:49,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1677714722] [2024-02-20 11:55:49,449 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-20 11:55:49,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:55:49,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:55:49,450 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 11:55:49,475 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-02-20 11:55:49,564 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-20 11:55:49,564 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:55:49,565 INFO L262 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 25 conjunts are in the unsatisfiable core [2024-02-20 11:55:49,566 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:55:49,627 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-02-20 11:55:49,628 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2024-02-20 11:55:49,633 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-20 11:55:49,633 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:55:49,702 INFO L349 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2024-02-20 11:55:49,703 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 32 treesize of output 48 [2024-02-20 11:55:49,720 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-20 11:55:49,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1677714722] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 11:55:49,720 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 11:55:49,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 7] total 17 [2024-02-20 11:55:49,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261893399] [2024-02-20 11:55:49,721 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 11:55:49,722 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-02-20 11:55:49,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:55:49,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-02-20 11:55:49,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2024-02-20 11:55:49,724 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 35 [2024-02-20 11:55:49,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 1733 transitions, 148390 flow. Second operand has 17 states, 17 states have (on average 7.588235294117647) internal successors, (129), 17 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:55:49,725 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:55:49,725 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 35 [2024-02-20 11:55:49,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:55:54,556 INFO L124 PetriNetUnfolderBase]: 2992/5616 cut-off events. [2024-02-20 11:55:54,556 INFO L125 PetriNetUnfolderBase]: For 24859/24859 co-relation queries the response was YES. [2024-02-20 11:55:54,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 244239 conditions, 5616 events. 2992/5616 cut-off events. For 24859/24859 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 39449 event pairs, 21 based on Foata normal form. 0/5076 useless extension candidates. Maximal degree in co-relation 160089. Up to 5163 conditions per place. [2024-02-20 11:55:54,890 INFO L140 encePairwiseOnDemand]: 21/35 looper letters, 777 selfloop transitions, 141 changer transitions 1056/1987 dead transitions. [2024-02-20 11:55:54,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 448 places, 1987 transitions, 174191 flow [2024-02-20 11:55:54,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-02-20 11:55:54,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-02-20 11:55:54,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 176 transitions. [2024-02-20 11:55:54,891 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.41904761904761906 [2024-02-20 11:55:54,891 INFO L308 CegarLoopForPetriNet]: 31 programPoint places, 417 predicate places. [2024-02-20 11:55:54,891 INFO L507 AbstractCegarLoop]: Abstraction has has 448 places, 1987 transitions, 174191 flow [2024-02-20 11:55:54,892 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 7.588235294117647) internal successors, (129), 17 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:55:54,892 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:55:54,892 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] [2024-02-20 11:55:54,904 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2024-02-20 11:55:55,096 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:55:55,096 INFO L432 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:55:55,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:55:55,097 INFO L85 PathProgramCache]: Analyzing trace with hash -22114030, now seen corresponding path program 3 times [2024-02-20 11:55:55,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:55:55,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102265285] [2024-02-20 11:55:55,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:55:55,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:55:55,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:55:55,262 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-20 11:55:55,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:55:55,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102265285] [2024-02-20 11:55:55,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102265285] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 11:55:55,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-20 11:55:55,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-20 11:55:55,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072373634] [2024-02-20 11:55:55,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:55:55,263 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-20 11:55:55,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:55:55,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-20 11:55:55,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-02-20 11:55:55,264 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 35 [2024-02-20 11:55:55,264 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 448 places, 1987 transitions, 174191 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:55:55,264 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:55:55,264 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 35 [2024-02-20 11:55:55,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:56:00,409 INFO L124 PetriNetUnfolderBase]: 2994/5622 cut-off events. [2024-02-20 11:56:00,410 INFO L125 PetriNetUnfolderBase]: For 28314/28314 co-relation queries the response was YES. [2024-02-20 11:56:00,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 249918 conditions, 5622 events. 2994/5622 cut-off events. For 28314/28314 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 39588 event pairs, 21 based on Foata normal form. 0/5084 useless extension candidates. Maximal degree in co-relation 163939. Up to 5169 conditions per place. [2024-02-20 11:56:00,502 INFO L140 encePairwiseOnDemand]: 23/35 looper letters, 813 selfloop transitions, 101 changer transitions 1062/1989 dead transitions. [2024-02-20 11:56:00,502 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 457 places, 1989 transitions, 178253 flow [2024-02-20 11:56:00,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-20 11:56:00,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-20 11:56:00,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-02-20 11:56:00,503 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.3457142857142857 [2024-02-20 11:56:00,503 INFO L308 CegarLoopForPetriNet]: 31 programPoint places, 426 predicate places. [2024-02-20 11:56:00,503 INFO L507 AbstractCegarLoop]: Abstraction has has 457 places, 1989 transitions, 178253 flow [2024-02-20 11:56:00,504 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:56:00,504 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:56:00,504 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] [2024-02-20 11:56:00,504 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-02-20 11:56:00,504 INFO L432 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:56:00,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:56:00,504 INFO L85 PathProgramCache]: Analyzing trace with hash 871180880, now seen corresponding path program 4 times [2024-02-20 11:56:00,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:56:00,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723975612] [2024-02-20 11:56:00,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:56:00,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:56:00,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:56:00,663 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-20 11:56:00,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:56:00,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723975612] [2024-02-20 11:56:00,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723975612] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 11:56:00,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-20 11:56:00,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-20 11:56:00,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461041202] [2024-02-20 11:56:00,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:56:00,664 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-20 11:56:00,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:56:00,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-20 11:56:00,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-02-20 11:56:00,665 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 35 [2024-02-20 11:56:00,665 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 457 places, 1989 transitions, 178253 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:56:00,665 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:56:00,665 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 35 [2024-02-20 11:56:00,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:56:05,580 INFO L124 PetriNetUnfolderBase]: 2986/5614 cut-off events. [2024-02-20 11:56:05,581 INFO L125 PetriNetUnfolderBase]: For 33269/33269 co-relation queries the response was YES. [2024-02-20 11:56:05,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 254965 conditions, 5614 events. 2986/5614 cut-off events. For 33269/33269 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 39581 event pairs, 33 based on Foata normal form. 0/5084 useless extension candidates. Maximal degree in co-relation 167157. Up to 5161 conditions per place. [2024-02-20 11:56:05,692 INFO L140 encePairwiseOnDemand]: 23/35 looper letters, 798 selfloop transitions, 99 changer transitions 1077/1987 dead transitions. [2024-02-20 11:56:05,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 467 places, 1987 transitions, 181955 flow [2024-02-20 11:56:05,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-02-20 11:56:05,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-02-20 11:56:05,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-02-20 11:56:05,693 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-02-20 11:56:05,693 INFO L308 CegarLoopForPetriNet]: 31 programPoint places, 436 predicate places. [2024-02-20 11:56:05,693 INFO L507 AbstractCegarLoop]: Abstraction has has 467 places, 1987 transitions, 181955 flow [2024-02-20 11:56:05,693 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:56:05,693 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:56:05,693 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] [2024-02-20 11:56:05,693 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-02-20 11:56:05,694 INFO L432 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:56:05,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:56:05,694 INFO L85 PathProgramCache]: Analyzing trace with hash 658028878, now seen corresponding path program 4 times [2024-02-20 11:56:05,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:56:05,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135277261] [2024-02-20 11:56:05,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:56:05,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:56:05,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:56:06,022 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-20 11:56:06,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:56:06,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135277261] [2024-02-20 11:56:06,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135277261] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:56:06,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [579428636] [2024-02-20 11:56:06,023 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-02-20 11:56:06,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:56:06,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:56:06,024 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 11:56:06,025 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-02-20 11:56:06,134 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-02-20 11:56:06,134 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:56:06,135 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 15 conjunts are in the unsatisfiable core [2024-02-20 11:56:06,135 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:56:06,169 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-20 11:56:06,170 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 25 [2024-02-20 11:56:06,187 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-20 11:56:06,187 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:56:06,249 INFO L349 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2024-02-20 11:56:06,250 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 32 treesize of output 48 [2024-02-20 11:56:06,257 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-20 11:56:06,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [579428636] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 11:56:06,257 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 11:56:06,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 18 [2024-02-20 11:56:06,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599710894] [2024-02-20 11:56:06,257 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 11:56:06,258 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-02-20 11:56:06,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:56:06,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-02-20 11:56:06,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2024-02-20 11:56:06,258 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 35 [2024-02-20 11:56:06,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 467 places, 1987 transitions, 181955 flow. Second operand has 18 states, 18 states have (on average 7.444444444444445) internal successors, (134), 18 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:56:06,259 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:56:06,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 35 [2024-02-20 11:56:06,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:56:11,659 INFO L124 PetriNetUnfolderBase]: 3056/5734 cut-off events. [2024-02-20 11:56:11,659 INFO L125 PetriNetUnfolderBase]: For 37301/37301 co-relation queries the response was YES. [2024-02-20 11:56:11,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 266017 conditions, 5734 events. 3056/5734 cut-off events. For 37301/37301 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 40392 event pairs, 41 based on Foata normal form. 0/5194 useless extension candidates. Maximal degree in co-relation 176380. Up to 5281 conditions per place. [2024-02-20 11:56:11,756 INFO L140 encePairwiseOnDemand]: 21/35 looper letters, 795 selfloop transitions, 129 changer transitions 1077/2014 dead transitions. [2024-02-20 11:56:11,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 482 places, 2014 transitions, 188381 flow [2024-02-20 11:56:11,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-02-20 11:56:11,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-02-20 11:56:11,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 205 transitions. [2024-02-20 11:56:11,757 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.36607142857142855 [2024-02-20 11:56:11,757 INFO L308 CegarLoopForPetriNet]: 31 programPoint places, 451 predicate places. [2024-02-20 11:56:11,757 INFO L507 AbstractCegarLoop]: Abstraction has has 482 places, 2014 transitions, 188381 flow [2024-02-20 11:56:11,758 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 7.444444444444445) internal successors, (134), 18 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:56:11,758 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:56:11,758 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] [2024-02-20 11:56:11,768 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2024-02-20 11:56:11,964 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2024-02-20 11:56:11,964 INFO L432 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:56:11,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:56:11,965 INFO L85 PathProgramCache]: Analyzing trace with hash 88223388, now seen corresponding path program 5 times [2024-02-20 11:56:11,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:56:11,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299692607] [2024-02-20 11:56:11,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:56:11,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:56:11,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:56:12,138 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-20 11:56:12,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:56:12,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299692607] [2024-02-20 11:56:12,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299692607] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 11:56:12,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-20 11:56:12,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-20 11:56:12,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816867858] [2024-02-20 11:56:12,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:56:12,139 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-20 11:56:12,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:56:12,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-20 11:56:12,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-02-20 11:56:12,139 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 35 [2024-02-20 11:56:12,139 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 482 places, 2014 transitions, 188381 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:56:12,139 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:56:12,139 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 35 [2024-02-20 11:56:12,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:56:17,987 INFO L124 PetriNetUnfolderBase]: 2986/5613 cut-off events. [2024-02-20 11:56:17,987 INFO L125 PetriNetUnfolderBase]: For 41553/41553 co-relation queries the response was YES. [2024-02-20 11:56:17,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 265776 conditions, 5613 events. 2986/5613 cut-off events. For 41553/41553 co-relation queries the response was YES. Maximal size of possible extension queue 285. Compared 39383 event pairs, 29 based on Foata normal form. 0/5097 useless extension candidates. Maximal degree in co-relation 174408. Up to 5161 conditions per place. [2024-02-20 11:56:18,112 INFO L140 encePairwiseOnDemand]: 23/35 looper letters, 793 selfloop transitions, 94 changer transitions 1084/1984 dead transitions. [2024-02-20 11:56:18,112 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 490 places, 1984 transitions, 189428 flow [2024-02-20 11:56:18,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-20 11:56:18,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-20 11:56:18,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-02-20 11:56:18,113 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.35428571428571426 [2024-02-20 11:56:18,113 INFO L308 CegarLoopForPetriNet]: 31 programPoint places, 459 predicate places. [2024-02-20 11:56:18,114 INFO L507 AbstractCegarLoop]: Abstraction has has 490 places, 1984 transitions, 189428 flow [2024-02-20 11:56:18,114 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:56:18,114 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:56:18,114 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] [2024-02-20 11:56:18,114 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-02-20 11:56:18,114 INFO L432 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:56:18,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:56:18,114 INFO L85 PathProgramCache]: Analyzing trace with hash -578986412, now seen corresponding path program 6 times [2024-02-20 11:56:18,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:56:18,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011303397] [2024-02-20 11:56:18,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:56:18,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:56:18,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:56:18,462 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-20 11:56:18,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:56:18,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011303397] [2024-02-20 11:56:18,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011303397] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:56:18,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [353000085] [2024-02-20 11:56:18,463 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-02-20 11:56:18,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:56:18,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:56:18,464 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 11:56:18,465 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-02-20 11:56:18,587 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-02-20 11:56:18,587 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:56:18,589 INFO L262 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 35 conjunts are in the unsatisfiable core [2024-02-20 11:56:18,590 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:56:18,609 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-02-20 11:56:18,658 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-20 11:56:18,658 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 21 [2024-02-20 11:56:18,673 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-20 11:56:18,674 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:56:18,741 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-20 11:56:18,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [353000085] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 11:56:18,741 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 11:56:18,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 7] total 18 [2024-02-20 11:56:18,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717728825] [2024-02-20 11:56:18,741 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 11:56:18,741 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-02-20 11:56:18,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:56:18,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-02-20 11:56:18,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2024-02-20 11:56:18,742 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 35 [2024-02-20 11:56:18,742 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 490 places, 1984 transitions, 189428 flow. Second operand has 18 states, 18 states have (on average 7.5) internal successors, (135), 18 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:56:18,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:56:18,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 35 [2024-02-20 11:56:18,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:56:25,056 INFO L124 PetriNetUnfolderBase]: 3184/5940 cut-off events. [2024-02-20 11:56:25,056 INFO L125 PetriNetUnfolderBase]: For 44314/44314 co-relation queries the response was YES. [2024-02-20 11:56:25,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 287166 conditions, 5940 events. 3184/5940 cut-off events. For 44314/44314 co-relation queries the response was YES. Maximal size of possible extension queue 314. Compared 42038 event pairs, 39 based on Foata normal form. 0/5370 useless extension candidates. Maximal degree in co-relation 193871. Up to 5487 conditions per place. [2024-02-20 11:56:25,162 INFO L140 encePairwiseOnDemand]: 20/35 looper letters, 889 selfloop transitions, 108 changer transitions 1086/2096 dead transitions. [2024-02-20 11:56:25,162 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 506 places, 2096 transitions, 204292 flow [2024-02-20 11:56:25,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-02-20 11:56:25,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-02-20 11:56:25,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 209 transitions. [2024-02-20 11:56:25,163 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.35126050420168065 [2024-02-20 11:56:25,164 INFO L308 CegarLoopForPetriNet]: 31 programPoint places, 475 predicate places. [2024-02-20 11:56:25,164 INFO L507 AbstractCegarLoop]: Abstraction has has 506 places, 2096 transitions, 204292 flow [2024-02-20 11:56:25,164 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 7.5) internal successors, (135), 18 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:56:25,164 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:56:25,164 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] [2024-02-20 11:56:25,176 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2024-02-20 11:56:25,372 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:56:25,372 INFO L432 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:56:25,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:56:25,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1384486826, now seen corresponding path program 7 times [2024-02-20 11:56:25,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:56:25,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380355799] [2024-02-20 11:56:25,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:56:25,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:56:25,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:56:25,537 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-20 11:56:25,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:56:25,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380355799] [2024-02-20 11:56:25,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380355799] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 11:56:25,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-20 11:56:25,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-20 11:56:25,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434320980] [2024-02-20 11:56:25,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:56:25,537 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-20 11:56:25,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:56:25,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-20 11:56:25,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-02-20 11:56:25,538 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 35 [2024-02-20 11:56:25,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 506 places, 2096 transitions, 204292 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:56:25,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:56:25,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 35 [2024-02-20 11:56:25,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:56:31,518 INFO L124 PetriNetUnfolderBase]: 3176/5932 cut-off events. [2024-02-20 11:56:31,519 INFO L125 PetriNetUnfolderBase]: For 50857/50857 co-relation queries the response was YES. [2024-02-20 11:56:31,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 292499 conditions, 5932 events. 3176/5932 cut-off events. For 50857/50857 co-relation queries the response was YES. Maximal size of possible extension queue 314. Compared 42018 event pairs, 27 based on Foata normal form. 0/5370 useless extension candidates. Maximal degree in co-relation 197375. Up to 5479 conditions per place. [2024-02-20 11:56:31,617 INFO L140 encePairwiseOnDemand]: 23/35 looper letters, 890 selfloop transitions, 90 changer transitions 1101/2094 dead transitions. [2024-02-20 11:56:31,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 516 places, 2094 transitions, 208192 flow [2024-02-20 11:56:31,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-02-20 11:56:31,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-02-20 11:56:31,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-02-20 11:56:31,618 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.36623376623376624 [2024-02-20 11:56:31,619 INFO L308 CegarLoopForPetriNet]: 31 programPoint places, 485 predicate places. [2024-02-20 11:56:31,619 INFO L507 AbstractCegarLoop]: Abstraction has has 516 places, 2094 transitions, 208192 flow [2024-02-20 11:56:31,619 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:56:31,619 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:56:31,619 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] [2024-02-20 11:56:31,619 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-02-20 11:56:31,619 INFO L432 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:56:31,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:56:31,620 INFO L85 PathProgramCache]: Analyzing trace with hash 1118258532, now seen corresponding path program 8 times [2024-02-20 11:56:31,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:56:31,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558999216] [2024-02-20 11:56:31,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:56:31,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:56:31,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:56:31,803 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-20 11:56:31,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:56:31,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558999216] [2024-02-20 11:56:31,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558999216] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:56:31,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1652847964] [2024-02-20 11:56:31,804 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-20 11:56:31,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:56:31,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:56:31,805 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 11:56:31,806 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-02-20 11:56:31,931 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-20 11:56:31,931 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:56:31,932 INFO L262 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 25 conjunts are in the unsatisfiable core [2024-02-20 11:56:31,933 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:56:31,978 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-20 11:56:31,978 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 21 [2024-02-20 11:56:31,993 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-20 11:56:31,993 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:56:32,053 INFO L349 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2024-02-20 11:56:32,053 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 40 treesize of output 56 [2024-02-20 11:56:32,073 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-20 11:56:32,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1652847964] provided 1 perfect and 1 imperfect interpolant sequences [2024-02-20 11:56:32,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-02-20 11:56:32,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9, 9] total 17 [2024-02-20 11:56:32,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486298346] [2024-02-20 11:56:32,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:56:32,074 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-20 11:56:32,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:56:32,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-20 11:56:32,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2024-02-20 11:56:32,074 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 35 [2024-02-20 11:56:32,075 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 516 places, 2094 transitions, 208192 flow. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:56:32,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:56:32,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 35 [2024-02-20 11:56:32,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:56:38,366 INFO L124 PetriNetUnfolderBase]: 3198/5993 cut-off events. [2024-02-20 11:56:38,366 INFO L125 PetriNetUnfolderBase]: For 53635/53635 co-relation queries the response was YES. [2024-02-20 11:56:38,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 301292 conditions, 5993 events. 3198/5993 cut-off events. For 53635/53635 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 42704 event pairs, 27 based on Foata normal form. 0/5439 useless extension candidates. Maximal degree in co-relation 204235. Up to 5539 conditions per place. [2024-02-20 11:56:38,489 INFO L140 encePairwiseOnDemand]: 25/35 looper letters, 903 selfloop transitions, 88 changer transitions 1101/2105 dead transitions. [2024-02-20 11:56:38,489 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 525 places, 2105 transitions, 213419 flow [2024-02-20 11:56:38,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-20 11:56:38,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-20 11:56:38,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 155 transitions. [2024-02-20 11:56:38,490 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.44285714285714284 [2024-02-20 11:56:38,490 INFO L308 CegarLoopForPetriNet]: 31 programPoint places, 494 predicate places. [2024-02-20 11:56:38,491 INFO L507 AbstractCegarLoop]: Abstraction has has 525 places, 2105 transitions, 213419 flow [2024-02-20 11:56:38,491 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:56:38,491 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:56:38,491 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] [2024-02-20 11:56:38,503 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2024-02-20 11:56:38,702 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2024-02-20 11:56:38,702 INFO L432 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:56:38,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:56:38,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1879706456, now seen corresponding path program 9 times [2024-02-20 11:56:38,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:56:38,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60953148] [2024-02-20 11:56:38,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:56:38,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:56:38,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:56:39,031 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-20 11:56:39,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:56:39,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60953148] [2024-02-20 11:56:39,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60953148] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 11:56:39,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-20 11:56:39,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-20 11:56:39,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176417763] [2024-02-20 11:56:39,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:56:39,032 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-20 11:56:39,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:56:39,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-20 11:56:39,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-02-20 11:56:39,033 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 35 [2024-02-20 11:56:39,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 525 places, 2105 transitions, 213419 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:56:39,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:56:39,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 35 [2024-02-20 11:56:39,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:56:44,899 INFO L124 PetriNetUnfolderBase]: 3116/5852 cut-off events. [2024-02-20 11:56:44,899 INFO L125 PetriNetUnfolderBase]: For 58633/58633 co-relation queries the response was YES. [2024-02-20 11:56:44,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 299789 conditions, 5852 events. 3116/5852 cut-off events. For 58633/58633 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 41603 event pairs, 27 based on Foata normal form. 0/5324 useless extension candidates. Maximal degree in co-relation 201007. Up to 5399 conditions per place. [2024-02-20 11:56:45,010 INFO L140 encePairwiseOnDemand]: 23/35 looper letters, 863 selfloop transitions, 85 changer transitions 1108/2069 dead transitions. [2024-02-20 11:56:45,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 533 places, 2069 transitions, 213784 flow [2024-02-20 11:56:45,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-20 11:56:45,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-20 11:56:45,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-02-20 11:56:45,011 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.35714285714285715 [2024-02-20 11:56:45,011 INFO L308 CegarLoopForPetriNet]: 31 programPoint places, 502 predicate places. [2024-02-20 11:56:45,011 INFO L507 AbstractCegarLoop]: Abstraction has has 533 places, 2069 transitions, 213784 flow [2024-02-20 11:56:45,011 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:56:45,011 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:56:45,011 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] [2024-02-20 11:56:45,011 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-02-20 11:56:45,011 INFO L432 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:56:45,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:56:45,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1366881566, now seen corresponding path program 5 times [2024-02-20 11:56:45,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:56:45,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34180629] [2024-02-20 11:56:45,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:56:45,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:56:45,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:56:45,180 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-20 11:56:45,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:56:45,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34180629] [2024-02-20 11:56:45,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34180629] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:56:45,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1294685189] [2024-02-20 11:56:45,181 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-02-20 11:56:45,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:56:45,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:56:45,182 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 11:56:45,185 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2024-02-20 11:56:45,293 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-20 11:56:45,293 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:56:45,294 INFO L262 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 21 conjunts are in the unsatisfiable core [2024-02-20 11:56:45,294 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:56:45,351 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2024-02-20 11:56:45,351 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2024-02-20 11:56:45,357 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-20 11:56:45,357 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:56:45,423 INFO L349 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2024-02-20 11:56:45,423 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 40 treesize of output 56 [2024-02-20 11:56:45,446 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-20 11:56:45,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1294685189] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 11:56:45,447 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 11:56:45,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 7] total 20 [2024-02-20 11:56:45,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047259863] [2024-02-20 11:56:45,447 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 11:56:45,447 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-02-20 11:56:45,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:56:45,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-02-20 11:56:45,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2024-02-20 11:56:45,448 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 35 [2024-02-20 11:56:45,448 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 533 places, 2069 transitions, 213784 flow. Second operand has 20 states, 20 states have (on average 7.65) internal successors, (153), 20 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:56:45,448 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:56:45,448 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 35 [2024-02-20 11:56:45,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:56:52,160 INFO L124 PetriNetUnfolderBase]: 3314/6170 cut-off events. [2024-02-20 11:56:52,161 INFO L125 PetriNetUnfolderBase]: For 66540/66540 co-relation queries the response was YES. [2024-02-20 11:56:52,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 322300 conditions, 6170 events. 3314/6170 cut-off events. For 66540/66540 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 43852 event pairs, 29 based on Foata normal form. 0/5588 useless extension candidates. Maximal degree in co-relation 221689. Up to 5717 conditions per place. [2024-02-20 11:56:52,270 INFO L140 encePairwiseOnDemand]: 21/35 looper letters, 970 selfloop transitions, 109 changer transitions 1108/2200 dead transitions. [2024-02-20 11:56:52,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 542 places, 2200 transitions, 231752 flow [2024-02-20 11:56:52,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-20 11:56:52,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-20 11:56:52,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 138 transitions. [2024-02-20 11:56:52,271 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.3942857142857143 [2024-02-20 11:56:52,271 INFO L308 CegarLoopForPetriNet]: 31 programPoint places, 511 predicate places. [2024-02-20 11:56:52,271 INFO L507 AbstractCegarLoop]: Abstraction has has 542 places, 2200 transitions, 231752 flow [2024-02-20 11:56:52,271 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 7.65) internal successors, (153), 20 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:56:52,271 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:56:52,271 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] [2024-02-20 11:56:52,282 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2024-02-20 11:56:52,479 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2024-02-20 11:56:52,479 INFO L432 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:56:52,480 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:56:52,480 INFO L85 PathProgramCache]: Analyzing trace with hash -828353314, now seen corresponding path program 6 times [2024-02-20 11:56:52,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:56:52,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097952093] [2024-02-20 11:56:52,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:56:52,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:56:52,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:56:52,656 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-20 11:56:52,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:56:52,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097952093] [2024-02-20 11:56:52,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097952093] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 11:56:52,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-20 11:56:52,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-20 11:56:52,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650308233] [2024-02-20 11:56:52,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:56:52,657 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-20 11:56:52,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:56:52,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-20 11:56:52,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-02-20 11:56:52,657 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 35 [2024-02-20 11:56:52,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 542 places, 2200 transitions, 231752 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:56:52,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:56:52,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 35 [2024-02-20 11:56:52,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:57:00,194 INFO L124 PetriNetUnfolderBase]: 3321/6183 cut-off events. [2024-02-20 11:57:00,194 INFO L125 PetriNetUnfolderBase]: For 69335/69335 co-relation queries the response was YES. [2024-02-20 11:57:00,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 328965 conditions, 6183 events. 3321/6183 cut-off events. For 69335/69335 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 44013 event pairs, 27 based on Foata normal form. 0/5601 useless extension candidates. Maximal degree in co-relation 226525. Up to 5730 conditions per place. [2024-02-20 11:57:00,318 INFO L140 encePairwiseOnDemand]: 23/35 looper letters, 995 selfloop transitions, 83 changer transitions 1115/2206 dead transitions. [2024-02-20 11:57:00,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 551 places, 2206 transitions, 236708 flow [2024-02-20 11:57:00,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-20 11:57:00,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-20 11:57:00,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-02-20 11:57:00,319 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.35714285714285715 [2024-02-20 11:57:00,320 INFO L308 CegarLoopForPetriNet]: 31 programPoint places, 520 predicate places. [2024-02-20 11:57:00,320 INFO L507 AbstractCegarLoop]: Abstraction has has 551 places, 2206 transitions, 236708 flow [2024-02-20 11:57:00,320 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:57:00,320 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:57:00,320 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] [2024-02-20 11:57:00,320 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-02-20 11:57:00,321 INFO L432 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:57:00,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:57:00,321 INFO L85 PathProgramCache]: Analyzing trace with hash -2115965042, now seen corresponding path program 7 times [2024-02-20 11:57:00,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:57:00,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909170838] [2024-02-20 11:57:00,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:57:00,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:57:00,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:57:00,481 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-20 11:57:00,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:57:00,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909170838] [2024-02-20 11:57:00,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909170838] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 11:57:00,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-20 11:57:00,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-20 11:57:00,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284256334] [2024-02-20 11:57:00,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:57:00,482 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-20 11:57:00,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:57:00,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-20 11:57:00,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-02-20 11:57:00,483 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 35 [2024-02-20 11:57:00,483 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 551 places, 2206 transitions, 236708 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:57:00,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:57:00,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 35 [2024-02-20 11:57:00,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:57:08,054 INFO L124 PetriNetUnfolderBase]: 3328/6196 cut-off events. [2024-02-20 11:57:08,054 INFO L125 PetriNetUnfolderBase]: For 78188/78188 co-relation queries the response was YES. [2024-02-20 11:57:08,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 335656 conditions, 6196 events. 3328/6196 cut-off events. For 78188/78188 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 44086 event pairs, 29 based on Foata normal form. 0/5614 useless extension candidates. Maximal degree in co-relation 231387. Up to 5743 conditions per place. [2024-02-20 11:57:08,178 INFO L140 encePairwiseOnDemand]: 23/35 looper letters, 994 selfloop transitions, 83 changer transitions 1122/2212 dead transitions. [2024-02-20 11:57:08,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 560 places, 2212 transitions, 241688 flow [2024-02-20 11:57:08,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-20 11:57:08,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-20 11:57:08,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-02-20 11:57:08,180 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.3514285714285714 [2024-02-20 11:57:08,180 INFO L308 CegarLoopForPetriNet]: 31 programPoint places, 529 predicate places. [2024-02-20 11:57:08,180 INFO L507 AbstractCegarLoop]: Abstraction has has 560 places, 2212 transitions, 241688 flow [2024-02-20 11:57:08,180 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:57:08,180 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:57:08,180 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] [2024-02-20 11:57:08,180 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-02-20 11:57:08,180 INFO L432 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:57:08,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:57:08,181 INFO L85 PathProgramCache]: Analyzing trace with hash -148210406, now seen corresponding path program 8 times [2024-02-20 11:57:08,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:57:08,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371576137] [2024-02-20 11:57:08,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:57:08,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:57:08,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:57:08,508 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-20 11:57:08,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:57:08,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371576137] [2024-02-20 11:57:08,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371576137] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:57:08,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [116750514] [2024-02-20 11:57:08,509 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-20 11:57:08,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:57:08,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:57:08,510 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 11:57:08,510 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2024-02-20 11:57:08,645 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-20 11:57:08,645 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:57:08,646 INFO L262 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 25 conjunts are in the unsatisfiable core [2024-02-20 11:57:08,647 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:57:08,697 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-20 11:57:08,697 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 21 [2024-02-20 11:57:08,712 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-20 11:57:08,712 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:57:08,765 INFO L349 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2024-02-20 11:57:08,766 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 40 treesize of output 56 [2024-02-20 11:57:08,797 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-20 11:57:08,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [116750514] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 11:57:08,797 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 11:57:08,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 7] total 17 [2024-02-20 11:57:08,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756889230] [2024-02-20 11:57:08,798 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 11:57:08,798 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-02-20 11:57:08,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:57:08,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-02-20 11:57:08,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2024-02-20 11:57:08,801 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 35 [2024-02-20 11:57:08,801 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 560 places, 2212 transitions, 241688 flow. Second operand has 17 states, 17 states have (on average 7.529411764705882) internal successors, (128), 17 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:57:08,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:57:08,801 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 35 [2024-02-20 11:57:08,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:57:16,703 INFO L124 PetriNetUnfolderBase]: 3370/6268 cut-off events. [2024-02-20 11:57:16,703 INFO L125 PetriNetUnfolderBase]: For 84332/84332 co-relation queries the response was YES. [2024-02-20 11:57:16,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 345680 conditions, 6268 events. 3370/6268 cut-off events. For 84332/84332 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 44679 event pairs, 29 based on Foata normal form. 0/5680 useless extension candidates. Maximal degree in co-relation 239582. Up to 5815 conditions per place. [2024-02-20 11:57:16,984 INFO L140 encePairwiseOnDemand]: 21/35 looper letters, 1006 selfloop transitions, 103 changer transitions 1122/2244 dead transitions. [2024-02-20 11:57:16,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 574 places, 2244 transitions, 249613 flow [2024-02-20 11:57:16,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-02-20 11:57:16,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-02-20 11:57:16,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 189 transitions. [2024-02-20 11:57:16,985 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.36 [2024-02-20 11:57:16,985 INFO L308 CegarLoopForPetriNet]: 31 programPoint places, 543 predicate places. [2024-02-20 11:57:16,985 INFO L507 AbstractCegarLoop]: Abstraction has has 574 places, 2244 transitions, 249613 flow [2024-02-20 11:57:16,985 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 7.529411764705882) internal successors, (128), 17 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:57:16,986 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:57:16,986 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] [2024-02-20 11:57:16,998 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2024-02-20 11:57:17,186 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2024-02-20 11:57:17,186 INFO L432 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:57:17,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:57:17,187 INFO L85 PathProgramCache]: Analyzing trace with hash -718015896, now seen corresponding path program 10 times [2024-02-20 11:57:17,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:57:17,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444423055] [2024-02-20 11:57:17,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:57:17,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:57:17,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:57:17,346 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-20 11:57:17,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:57:17,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444423055] [2024-02-20 11:57:17,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444423055] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 11:57:17,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-20 11:57:17,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-20 11:57:17,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353544399] [2024-02-20 11:57:17,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:57:17,347 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-20 11:57:17,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:57:17,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-20 11:57:17,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-02-20 11:57:17,347 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 35 [2024-02-20 11:57:17,347 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 574 places, 2244 transitions, 249613 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:57:17,347 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:57:17,347 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 35 [2024-02-20 11:57:17,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:57:25,465 INFO L124 PetriNetUnfolderBase]: 3288/6127 cut-off events. [2024-02-20 11:57:25,465 INFO L125 PetriNetUnfolderBase]: For 90748/90748 co-relation queries the response was YES. [2024-02-20 11:57:25,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 343753 conditions, 6127 events. 3288/6127 cut-off events. For 90748/90748 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 43555 event pairs, 27 based on Foata normal form. 0/5565 useless extension candidates. Maximal degree in co-relation 235942. Up to 5675 conditions per place. [2024-02-20 11:57:25,588 INFO L140 encePairwiseOnDemand]: 23/35 looper letters, 989 selfloop transitions, 77 changer transitions 1129/2208 dead transitions. [2024-02-20 11:57:25,588 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 582 places, 2208 transitions, 249896 flow [2024-02-20 11:57:25,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-20 11:57:25,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-20 11:57:25,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-02-20 11:57:25,589 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.3628571428571429 [2024-02-20 11:57:25,589 INFO L308 CegarLoopForPetriNet]: 31 programPoint places, 551 predicate places. [2024-02-20 11:57:25,589 INFO L507 AbstractCegarLoop]: Abstraction has has 582 places, 2208 transitions, 249896 flow [2024-02-20 11:57:25,589 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:57:25,590 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:57:25,590 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] [2024-02-20 11:57:25,590 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-02-20 11:57:25,590 INFO L432 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:57:25,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:57:25,590 INFO L85 PathProgramCache]: Analyzing trace with hash -1845455350, now seen corresponding path program 9 times [2024-02-20 11:57:25,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:57:25,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011702386] [2024-02-20 11:57:25,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:57:25,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:57:25,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:57:25,766 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-20 11:57:25,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:57:25,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011702386] [2024-02-20 11:57:25,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011702386] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:57:25,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [812130435] [2024-02-20 11:57:25,766 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-02-20 11:57:25,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:57:25,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:57:25,767 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 11:57:25,768 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2024-02-20 11:57:25,905 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-02-20 11:57:25,905 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:57:25,907 INFO L262 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 25 conjunts are in the unsatisfiable core [2024-02-20 11:57:25,907 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:57:25,956 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-20 11:57:25,956 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 21 [2024-02-20 11:57:25,971 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-20 11:57:25,971 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:57:26,024 INFO L349 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2024-02-20 11:57:26,024 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 40 treesize of output 56 [2024-02-20 11:57:26,045 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-20 11:57:26,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [812130435] provided 1 perfect and 1 imperfect interpolant sequences [2024-02-20 11:57:26,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-02-20 11:57:26,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9, 9] total 17 [2024-02-20 11:57:26,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935608025] [2024-02-20 11:57:26,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:57:26,046 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-20 11:57:26,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:57:26,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-20 11:57:26,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2024-02-20 11:57:26,047 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 35 [2024-02-20 11:57:26,047 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 582 places, 2208 transitions, 249896 flow. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:57:26,047 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:57:26,047 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 35 [2024-02-20 11:57:26,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:57:34,317 INFO L124 PetriNetUnfolderBase]: 3312/6220 cut-off events. [2024-02-20 11:57:34,318 INFO L125 PetriNetUnfolderBase]: For 93452/93452 co-relation queries the response was YES. [2024-02-20 11:57:34,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 354906 conditions, 6220 events. 3312/6220 cut-off events. For 93452/93452 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 44665 event pairs, 29 based on Foata normal form. 0/5676 useless extension candidates. Maximal degree in co-relation 244914. Up to 5765 conditions per place. [2024-02-20 11:57:34,443 INFO L140 encePairwiseOnDemand]: 25/35 looper letters, 1009 selfloop transitions, 84 changer transitions 1129/2235 dead transitions. [2024-02-20 11:57:34,443 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 590 places, 2235 transitions, 257370 flow [2024-02-20 11:57:34,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-20 11:57:34,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-20 11:57:34,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 136 transitions. [2024-02-20 11:57:34,444 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.43174603174603177 [2024-02-20 11:57:34,444 INFO L308 CegarLoopForPetriNet]: 31 programPoint places, 559 predicate places. [2024-02-20 11:57:34,444 INFO L507 AbstractCegarLoop]: Abstraction has has 590 places, 2235 transitions, 257370 flow [2024-02-20 11:57:34,444 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:57:34,444 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:57:34,444 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] [2024-02-20 11:57:34,457 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2024-02-20 11:57:34,645 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2024-02-20 11:57:34,645 INFO L432 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:57:34,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:57:34,645 INFO L85 PathProgramCache]: Analyzing trace with hash 1438637504, now seen corresponding path program 10 times [2024-02-20 11:57:34,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:57:34,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323163975] [2024-02-20 11:57:34,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:57:34,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:57:34,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:57:34,794 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-20 11:57:34,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:57:34,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323163975] [2024-02-20 11:57:34,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323163975] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 11:57:34,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-20 11:57:34,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-20 11:57:34,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164603309] [2024-02-20 11:57:34,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:57:34,795 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-20 11:57:34,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:57:34,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-20 11:57:34,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-02-20 11:57:34,796 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 35 [2024-02-20 11:57:34,796 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 590 places, 2235 transitions, 257370 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:57:34,796 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:57:34,796 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 35 [2024-02-20 11:57:34,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:57:42,740 INFO L124 PetriNetUnfolderBase]: 3210/6019 cut-off events. [2024-02-20 11:57:42,740 INFO L125 PetriNetUnfolderBase]: For 100027/100027 co-relation queries the response was YES. [2024-02-20 11:57:42,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 349220 conditions, 6019 events. 3210/6019 cut-off events. For 100027/100027 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 42986 event pairs, 27 based on Foata normal form. 0/5499 useless extension candidates. Maximal degree in co-relation 237755. Up to 5567 conditions per place. [2024-02-20 11:57:42,855 INFO L140 encePairwiseOnDemand]: 23/35 looper letters, 946 selfloop transitions, 72 changer transitions 1140/2171 dead transitions. [2024-02-20 11:57:42,855 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 600 places, 2171 transitions, 254169 flow [2024-02-20 11:57:42,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-02-20 11:57:42,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-02-20 11:57:42,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-02-20 11:57:42,856 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.34545454545454546 [2024-02-20 11:57:42,857 INFO L308 CegarLoopForPetriNet]: 31 programPoint places, 569 predicate places. [2024-02-20 11:57:42,857 INFO L507 AbstractCegarLoop]: Abstraction has has 600 places, 2171 transitions, 254169 flow [2024-02-20 11:57:42,857 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:57:42,857 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:57:42,857 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] [2024-02-20 11:57:42,857 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-02-20 11:57:42,857 INFO L432 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:57:42,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:57:42,857 INFO L85 PathProgramCache]: Analyzing trace with hash 484297048, now seen corresponding path program 11 times [2024-02-20 11:57:42,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:57:42,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534771746] [2024-02-20 11:57:42,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:57:42,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:57:42,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:57:43,011 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-20 11:57:43,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:57:43,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534771746] [2024-02-20 11:57:43,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534771746] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:57:43,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [69262802] [2024-02-20 11:57:43,011 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-02-20 11:57:43,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:57:43,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:57:43,012 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 11:57:43,013 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2024-02-20 11:57:43,143 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-20 11:57:43,143 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:57:43,144 INFO L262 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 15 conjunts are in the unsatisfiable core [2024-02-20 11:57:43,145 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:57:43,178 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2024-02-20 11:57:43,179 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2024-02-20 11:57:43,185 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-20 11:57:43,185 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:57:43,237 INFO L349 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2024-02-20 11:57:43,238 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 32 treesize of output 48 [2024-02-20 11:57:43,245 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-20 11:57:43,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [69262802] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 11:57:43,245 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 11:57:43,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 17 [2024-02-20 11:57:43,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852198068] [2024-02-20 11:57:43,245 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 11:57:43,246 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-02-20 11:57:43,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:57:43,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-02-20 11:57:43,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2024-02-20 11:57:43,246 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 35 [2024-02-20 11:57:43,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 600 places, 2171 transitions, 254169 flow. Second operand has 17 states, 17 states have (on average 7.588235294117647) internal successors, (129), 17 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:57:43,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:57:43,247 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 35 [2024-02-20 11:57:43,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:57:51,624 INFO L124 PetriNetUnfolderBase]: 3250/6083 cut-off events. [2024-02-20 11:57:51,624 INFO L125 PetriNetUnfolderBase]: For 106854/106854 co-relation queries the response was YES. [2024-02-20 11:57:51,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 358873 conditions, 6083 events. 3250/6083 cut-off events. For 106854/106854 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 43319 event pairs, 9 based on Foata normal form. 0/5555 useless extension candidates. Maximal degree in co-relation 245581. Up to 5631 conditions per place. [2024-02-20 11:57:51,751 INFO L140 encePairwiseOnDemand]: 22/35 looper letters, 921 selfloop transitions, 156 changer transitions 1147/2237 dead transitions. [2024-02-20 11:57:51,752 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 609 places, 2237 transitions, 266351 flow [2024-02-20 11:57:51,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-20 11:57:51,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-20 11:57:51,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 136 transitions. [2024-02-20 11:57:51,752 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.38857142857142857 [2024-02-20 11:57:51,753 INFO L308 CegarLoopForPetriNet]: 31 programPoint places, 578 predicate places. [2024-02-20 11:57:51,753 INFO L507 AbstractCegarLoop]: Abstraction has has 609 places, 2237 transitions, 266351 flow [2024-02-20 11:57:51,753 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 7.588235294117647) internal successors, (129), 17 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:57:51,753 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:57:51,753 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] [2024-02-20 11:57:51,767 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2024-02-20 11:57:51,953 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2024-02-20 11:57:51,953 INFO L432 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:57:51,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:57:51,954 INFO L85 PathProgramCache]: Analyzing trace with hash 886970890, now seen corresponding path program 11 times [2024-02-20 11:57:51,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:57:51,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019954962] [2024-02-20 11:57:51,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:57:51,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:57:51,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:57:52,128 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-20 11:57:52,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:57:52,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019954962] [2024-02-20 11:57:52,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019954962] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:57:52,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1076832399] [2024-02-20 11:57:52,129 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-02-20 11:57:52,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:57:52,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:57:52,130 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 11:57:52,130 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2024-02-20 11:57:52,243 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-20 11:57:52,243 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:57:52,244 INFO L262 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 25 conjunts are in the unsatisfiable core [2024-02-20 11:57:52,245 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:57:52,291 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-20 11:57:52,292 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 21 [2024-02-20 11:57:52,306 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-20 11:57:52,306 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:57:52,364 INFO L349 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2024-02-20 11:57:52,364 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 40 treesize of output 56 [2024-02-20 11:57:52,385 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-20 11:57:52,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1076832399] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 11:57:52,385 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 11:57:52,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 7] total 17 [2024-02-20 11:57:52,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052302193] [2024-02-20 11:57:52,386 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 11:57:52,386 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-02-20 11:57:52,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:57:52,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-02-20 11:57:52,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2024-02-20 11:57:52,386 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 35 [2024-02-20 11:57:52,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 609 places, 2237 transitions, 266351 flow. Second operand has 17 states, 17 states have (on average 7.529411764705882) internal successors, (128), 17 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:57:52,387 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:57:52,387 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 35 [2024-02-20 11:57:52,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:58:02,124 INFO L124 PetriNetUnfolderBase]: 3464/6477 cut-off events. [2024-02-20 11:58:02,124 INFO L125 PetriNetUnfolderBase]: For 118262/118262 co-relation queries the response was YES. [2024-02-20 11:58:02,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 388564 conditions, 6477 events. 3464/6477 cut-off events. For 118262/118262 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 46613 event pairs, 9 based on Foata normal form. 0/5897 useless extension candidates. Maximal degree in co-relation 272949. Up to 6021 conditions per place. [2024-02-20 11:58:02,261 INFO L140 encePairwiseOnDemand]: 21/35 looper letters, 1061 selfloop transitions, 151 changer transitions 1149/2374 dead transitions. [2024-02-20 11:58:02,261 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 624 places, 2374 transitions, 287495 flow [2024-02-20 11:58:02,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-02-20 11:58:02,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-02-20 11:58:02,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 218 transitions. [2024-02-20 11:58:02,262 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.3892857142857143 [2024-02-20 11:58:02,262 INFO L308 CegarLoopForPetriNet]: 31 programPoint places, 593 predicate places. [2024-02-20 11:58:02,262 INFO L507 AbstractCegarLoop]: Abstraction has has 624 places, 2374 transitions, 287495 flow [2024-02-20 11:58:02,263 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 7.529411764705882) internal successors, (128), 17 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:58:02,263 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:58:02,263 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] [2024-02-20 11:58:02,278 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2024-02-20 11:58:02,468 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:58:02,469 INFO L432 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:58:02,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:58:02,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1690701814, now seen corresponding path program 12 times [2024-02-20 11:58:02,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:58:02,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755623396] [2024-02-20 11:58:02,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:58:02,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:58:02,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:58:02,625 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-20 11:58:02,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:58:02,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755623396] [2024-02-20 11:58:02,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755623396] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 11:58:02,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-20 11:58:02,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-20 11:58:02,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274407638] [2024-02-20 11:58:02,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:58:02,626 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-20 11:58:02,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:58:02,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-20 11:58:02,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-02-20 11:58:02,627 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 35 [2024-02-20 11:58:02,627 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 624 places, 2374 transitions, 287495 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:58:02,627 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:58:02,627 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 35 [2024-02-20 11:58:02,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:58:13,298 INFO L124 PetriNetUnfolderBase]: 3458/6471 cut-off events. [2024-02-20 11:58:13,298 INFO L125 PetriNetUnfolderBase]: For 126344/126344 co-relation queries the response was YES. [2024-02-20 11:58:13,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 394459 conditions, 6471 events. 3458/6471 cut-off events. For 126344/126344 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 46511 event pairs, 9 based on Foata normal form. 0/5897 useless extension candidates. Maximal degree in co-relation 277009. Up to 6015 conditions per place. [2024-02-20 11:58:13,443 INFO L140 encePairwiseOnDemand]: 23/35 looper letters, 1068 selfloop transitions, 131 changer transitions 1160/2372 dead transitions. [2024-02-20 11:58:13,443 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 634 places, 2372 transitions, 291903 flow [2024-02-20 11:58:13,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-02-20 11:58:13,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-02-20 11:58:13,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-02-20 11:58:13,444 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.35584415584415585 [2024-02-20 11:58:13,444 INFO L308 CegarLoopForPetriNet]: 31 programPoint places, 603 predicate places. [2024-02-20 11:58:13,445 INFO L507 AbstractCegarLoop]: Abstraction has has 634 places, 2372 transitions, 291903 flow [2024-02-20 11:58:13,445 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:58:13,445 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:58:13,445 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] [2024-02-20 11:58:13,445 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-02-20 11:58:13,445 INFO L432 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:58:13,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:58:13,445 INFO L85 PathProgramCache]: Analyzing trace with hash -1085475428, now seen corresponding path program 12 times [2024-02-20 11:58:13,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:58:13,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651156551] [2024-02-20 11:58:13,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:58:13,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:58:13,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:58:13,616 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-20 11:58:13,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:58:13,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651156551] [2024-02-20 11:58:13,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651156551] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:58:13,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1736334530] [2024-02-20 11:58:13,617 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-02-20 11:58:13,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:58:13,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:58:13,620 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 11:58:13,621 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2024-02-20 11:58:13,776 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-02-20 11:58:13,777 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:58:13,778 INFO L262 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 25 conjunts are in the unsatisfiable core [2024-02-20 11:58:13,778 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:58:13,841 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-02-20 11:58:13,841 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2024-02-20 11:58:13,847 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-20 11:58:13,847 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:58:13,907 INFO L349 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2024-02-20 11:58:13,907 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 32 treesize of output 48 [2024-02-20 11:58:13,920 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-20 11:58:13,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1736334530] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 11:58:13,920 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 11:58:13,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 7] total 17 [2024-02-20 11:58:13,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627165325] [2024-02-20 11:58:13,921 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 11:58:13,921 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-02-20 11:58:13,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:58:13,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-02-20 11:58:13,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2024-02-20 11:58:13,921 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 35 [2024-02-20 11:58:13,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 634 places, 2372 transitions, 291903 flow. Second operand has 17 states, 17 states have (on average 7.588235294117647) internal successors, (129), 17 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:58:13,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:58:13,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 35 [2024-02-20 11:58:13,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:58:26,258 INFO L124 PetriNetUnfolderBase]: 4078/7509 cut-off events. [2024-02-20 11:58:26,259 INFO L125 PetriNetUnfolderBase]: For 134235/134235 co-relation queries the response was YES. [2024-02-20 11:58:26,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 465516 conditions, 7509 events. 4078/7509 cut-off events. For 134235/134235 co-relation queries the response was YES. Maximal size of possible extension queue 385. Compared 54109 event pairs, 9 based on Foata normal form. 0/6741 useless extension candidates. Maximal degree in co-relation 345463. Up to 7039 conditions per place. [2024-02-20 11:58:26,440 INFO L140 encePairwiseOnDemand]: 21/35 looper letters, 1280 selfloop transitions, 215 changer transitions 1160/2668 dead transitions. [2024-02-20 11:58:26,440 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 645 places, 2668 transitions, 333899 flow [2024-02-20 11:58:26,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-02-20 11:58:26,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-02-20 11:58:26,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 168 transitions. [2024-02-20 11:58:26,441 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-02-20 11:58:26,441 INFO L308 CegarLoopForPetriNet]: 31 programPoint places, 614 predicate places. [2024-02-20 11:58:26,441 INFO L507 AbstractCegarLoop]: Abstraction has has 645 places, 2668 transitions, 333899 flow [2024-02-20 11:58:26,442 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 7.588235294117647) internal successors, (129), 17 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:58:26,442 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:58:26,442 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] [2024-02-20 11:58:26,455 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2024-02-20 11:58:26,652 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable61 [2024-02-20 11:58:26,652 INFO L432 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:58:26,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:58:26,653 INFO L85 PathProgramCache]: Analyzing trace with hash -810274054, now seen corresponding path program 13 times [2024-02-20 11:58:26,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:58:26,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363590939] [2024-02-20 11:58:26,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:58:26,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:58:26,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:58:26,823 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-20 11:58:26,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:58:26,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363590939] [2024-02-20 11:58:26,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363590939] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:58:26,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2135602754] [2024-02-20 11:58:26,823 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-02-20 11:58:26,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:58:26,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:58:26,824 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 11:58:26,825 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2024-02-20 11:58:26,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:58:26,944 INFO L262 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 15 conjunts are in the unsatisfiable core [2024-02-20 11:58:26,944 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:58:26,971 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-20 11:58:26,972 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 25 [2024-02-20 11:58:26,987 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-20 11:58:26,987 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:58:27,040 INFO L349 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2024-02-20 11:58:27,041 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 40 treesize of output 56 [2024-02-20 11:58:27,061 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-20 11:58:27,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2135602754] provided 1 perfect and 1 imperfect interpolant sequences [2024-02-20 11:58:27,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-02-20 11:58:27,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9, 7] total 18 [2024-02-20 11:58:27,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399576357] [2024-02-20 11:58:27,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:58:27,062 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-20 11:58:27,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:58:27,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-20 11:58:27,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2024-02-20 11:58:27,063 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 35 [2024-02-20 11:58:27,063 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 645 places, 2668 transitions, 333899 flow. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:58:27,063 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:58:27,063 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 35 [2024-02-20 11:58:27,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:58:42,729 INFO L124 PetriNetUnfolderBase]: 4216/7776 cut-off events. [2024-02-20 11:58:42,730 INFO L125 PetriNetUnfolderBase]: For 148119/148119 co-relation queries the response was YES. [2024-02-20 11:58:42,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 489715 conditions, 7776 events. 4216/7776 cut-off events. For 148119/148119 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 56510 event pairs, 9 based on Foata normal form. 0/6984 useless extension candidates. Maximal degree in co-relation 367425. Up to 7303 conditions per place. [2024-02-20 11:58:42,923 INFO L140 encePairwiseOnDemand]: 25/35 looper letters, 1448 selfloop transitions, 141 changer transitions 1160/2762 dead transitions. [2024-02-20 11:58:42,924 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 654 places, 2762 transitions, 351211 flow [2024-02-20 11:58:42,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-20 11:58:42,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-20 11:58:42,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 153 transitions. [2024-02-20 11:58:42,925 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.43714285714285717 [2024-02-20 11:58:42,925 INFO L308 CegarLoopForPetriNet]: 31 programPoint places, 623 predicate places. [2024-02-20 11:58:42,925 INFO L507 AbstractCegarLoop]: Abstraction has has 654 places, 2762 transitions, 351211 flow [2024-02-20 11:58:42,925 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:58:42,925 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:58:42,925 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] [2024-02-20 11:58:42,939 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2024-02-20 11:58:43,126 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:58:43,126 INFO L432 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:58:43,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:58:43,126 INFO L85 PathProgramCache]: Analyzing trace with hash 1130086660, now seen corresponding path program 14 times [2024-02-20 11:58:43,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:58:43,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386188867] [2024-02-20 11:58:43,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:58:43,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:58:43,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:58:43,315 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-20 11:58:43,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:58:43,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386188867] [2024-02-20 11:58:43,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386188867] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 11:58:43,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-20 11:58:43,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-20 11:58:43,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748711151] [2024-02-20 11:58:43,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:58:43,317 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-20 11:58:43,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:58:43,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-20 11:58:43,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-02-20 11:58:43,321 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 35 [2024-02-20 11:58:43,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 654 places, 2762 transitions, 351211 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:58:43,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:58:43,321 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 35 [2024-02-20 11:58:43,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:58:59,746 INFO L124 PetriNetUnfolderBase]: 4210/7770 cut-off events. [2024-02-20 11:58:59,746 INFO L125 PetriNetUnfolderBase]: For 150604/150604 co-relation queries the response was YES. [2024-02-20 11:58:59,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 496874 conditions, 7770 events. 4210/7770 cut-off events. For 150604/150604 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 56531 event pairs, 9 based on Foata normal form. 0/6984 useless extension candidates. Maximal degree in co-relation 372731. Up to 7297 conditions per place. [2024-02-20 11:58:59,936 INFO L140 encePairwiseOnDemand]: 23/35 looper letters, 1402 selfloop transitions, 174 changer transitions 1171/2760 dead transitions. [2024-02-20 11:58:59,937 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 664 places, 2760 transitions, 356383 flow [2024-02-20 11:58:59,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-02-20 11:58:59,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-02-20 11:58:59,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-02-20 11:58:59,937 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.35324675324675325 [2024-02-20 11:58:59,938 INFO L308 CegarLoopForPetriNet]: 31 programPoint places, 633 predicate places. [2024-02-20 11:58:59,938 INFO L507 AbstractCegarLoop]: Abstraction has has 664 places, 2760 transitions, 356383 flow [2024-02-20 11:58:59,938 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:58:59,938 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:58:59,938 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] [2024-02-20 11:58:59,938 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-02-20 11:58:59,939 INFO L432 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:58:59,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:58:59,939 INFO L85 PathProgramCache]: Analyzing trace with hash 1571155612, now seen corresponding path program 13 times [2024-02-20 11:58:59,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:58:59,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922301264] [2024-02-20 11:58:59,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:58:59,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:58:59,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:59:00,110 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-20 11:59:00,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:59:00,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922301264] [2024-02-20 11:59:00,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922301264] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 11:59:00,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-20 11:59:00,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-20 11:59:00,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72648559] [2024-02-20 11:59:00,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:59:00,110 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-20 11:59:00,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:59:00,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-20 11:59:00,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-02-20 11:59:00,111 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 35 [2024-02-20 11:59:00,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 664 places, 2760 transitions, 356383 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:59:00,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:59:00,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 35 [2024-02-20 11:59:00,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:59:15,328 INFO L124 PetriNetUnfolderBase]: 4202/7762 cut-off events. [2024-02-20 11:59:15,328 INFO L125 PetriNetUnfolderBase]: For 159143/159143 co-relation queries the response was YES. [2024-02-20 11:59:15,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 503889 conditions, 7762 events. 4202/7762 cut-off events. For 159143/159143 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 56553 event pairs, 7 based on Foata normal form. 0/6984 useless extension candidates. Maximal degree in co-relation 377893. Up to 7289 conditions per place. [2024-02-20 11:59:15,527 INFO L140 encePairwiseOnDemand]: 23/35 looper letters, 1397 selfloop transitions, 170 changer transitions 1178/2758 dead transitions. [2024-02-20 11:59:15,528 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 673 places, 2758 transitions, 361547 flow [2024-02-20 11:59:15,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-20 11:59:15,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-20 11:59:15,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-02-20 11:59:15,528 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.3514285714285714 [2024-02-20 11:59:15,529 INFO L308 CegarLoopForPetriNet]: 31 programPoint places, 642 predicate places. [2024-02-20 11:59:15,529 INFO L507 AbstractCegarLoop]: Abstraction has has 673 places, 2758 transitions, 361547 flow [2024-02-20 11:59:15,529 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:59:15,529 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:59:15,529 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] [2024-02-20 11:59:15,529 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-02-20 11:59:15,529 INFO L432 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:59:15,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:59:15,530 INFO L85 PathProgramCache]: Analyzing trace with hash 456194884, now seen corresponding path program 14 times [2024-02-20 11:59:15,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:59:15,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160074962] [2024-02-20 11:59:15,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:59:15,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:59:15,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:59:15,712 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-20 11:59:15,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:59:15,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160074962] [2024-02-20 11:59:15,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160074962] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:59:15,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1389092064] [2024-02-20 11:59:15,712 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-20 11:59:15,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:59:15,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:59:15,713 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 11:59:15,714 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2024-02-20 11:59:15,860 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-20 11:59:15,861 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:59:15,862 INFO L262 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 33 conjunts are in the unsatisfiable core [2024-02-20 11:59:15,863 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:59:15,879 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-02-20 11:59:15,920 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-20 11:59:15,920 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 21 [2024-02-20 11:59:15,936 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-20 11:59:15,936 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:59:15,991 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-20 11:59:15,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1389092064] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 11:59:15,991 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 11:59:15,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 7] total 18 [2024-02-20 11:59:15,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765967071] [2024-02-20 11:59:15,991 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 11:59:15,992 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-02-20 11:59:15,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:59:15,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-02-20 11:59:15,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2024-02-20 11:59:15,993 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 35 [2024-02-20 11:59:15,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 673 places, 2758 transitions, 361547 flow. Second operand has 18 states, 18 states have (on average 7.5) internal successors, (135), 18 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:59:15,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:59:15,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 35 [2024-02-20 11:59:15,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:59:36,838 INFO L124 PetriNetUnfolderBase]: 4405/8122 cut-off events. [2024-02-20 11:59:36,838 INFO L125 PetriNetUnfolderBase]: For 174816/174816 co-relation queries the response was YES. [2024-02-20 11:59:36,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 535364 conditions, 8122 events. 4405/8122 cut-off events. For 174816/174816 co-relation queries the response was YES. Maximal size of possible extension queue 423. Compared 59588 event pairs, 7 based on Foata normal form. 0/7288 useless extension candidates. Maximal degree in co-relation 407107. Up to 7646 conditions per place. [2024-02-20 11:59:37,082 INFO L140 encePairwiseOnDemand]: 20/35 looper letters, 1500 selfloop transitions, 168 changer transitions 1180/2861 dead transitions. [2024-02-20 11:59:37,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 690 places, 2861 transitions, 380797 flow [2024-02-20 11:59:37,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-02-20 11:59:37,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-02-20 11:59:37,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 228 transitions. [2024-02-20 11:59:37,083 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.3619047619047619 [2024-02-20 11:59:37,084 INFO L308 CegarLoopForPetriNet]: 31 programPoint places, 659 predicate places. [2024-02-20 11:59:37,084 INFO L507 AbstractCegarLoop]: Abstraction has has 690 places, 2861 transitions, 380797 flow [2024-02-20 11:59:37,084 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 7.5) internal successors, (135), 18 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:59:37,084 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:59:37,084 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] [2024-02-20 11:59:37,097 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2024-02-20 11:59:37,288 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2024-02-20 11:59:37,288 INFO L432 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:59:37,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:59:37,288 INFO L85 PathProgramCache]: Analyzing trace with hash 258256712, now seen corresponding path program 15 times [2024-02-20 11:59:37,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:59:37,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904524667] [2024-02-20 11:59:37,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:59:37,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:59:37,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:59:37,565 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-20 11:59:37,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:59:37,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904524667] [2024-02-20 11:59:37,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904524667] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:59:37,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [877721948] [2024-02-20 11:59:37,565 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-02-20 11:59:37,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:59:37,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:59:37,566 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 11:59:37,567 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2024-02-20 11:59:37,717 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-02-20 11:59:37,717 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:59:37,719 INFO L262 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 33 conjunts are in the unsatisfiable core [2024-02-20 11:59:37,720 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:59:37,734 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-02-20 11:59:37,800 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-02-20 11:59:37,801 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2024-02-20 11:59:37,807 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-20 11:59:37,807 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:59:37,867 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-20 11:59:37,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [877721948] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 11:59:37,867 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 11:59:37,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 7] total 17 [2024-02-20 11:59:37,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197003947] [2024-02-20 11:59:37,868 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 11:59:37,868 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-02-20 11:59:37,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:59:37,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-02-20 11:59:37,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2024-02-20 11:59:37,869 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 35 [2024-02-20 11:59:37,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 690 places, 2861 transitions, 380797 flow. Second operand has 17 states, 17 states have (on average 7.647058823529412) internal successors, (130), 17 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:59:37,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:59:37,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 35 [2024-02-20 11:59:37,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:59:58,098 INFO L124 PetriNetUnfolderBase]: 4381/8075 cut-off events. [2024-02-20 11:59:58,098 INFO L125 PetriNetUnfolderBase]: For 176926/176926 co-relation queries the response was YES. [2024-02-20 11:59:58,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 540122 conditions, 8075 events. 4381/8075 cut-off events. For 176926/176926 co-relation queries the response was YES. Maximal size of possible extension queue 420. Compared 59075 event pairs, 7 based on Foata normal form. 0/7253 useless extension candidates. Maximal degree in co-relation 410144. Up to 7600 conditions per place. [2024-02-20 11:59:58,331 INFO L140 encePairwiseOnDemand]: 20/35 looper letters, 1494 selfloop transitions, 171 changer transitions 1180/2858 dead transitions. [2024-02-20 11:59:58,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 699 places, 2858 transitions, 386013 flow [2024-02-20 11:59:58,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-02-20 11:59:58,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-02-20 11:59:58,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-02-20 11:59:58,496 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.36623376623376624 [2024-02-20 11:59:58,497 INFO L308 CegarLoopForPetriNet]: 31 programPoint places, 668 predicate places. [2024-02-20 11:59:58,497 INFO L507 AbstractCegarLoop]: Abstraction has has 699 places, 2858 transitions, 386013 flow [2024-02-20 11:59:58,497 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 7.647058823529412) internal successors, (130), 17 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:59:58,497 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:59:58,497 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] [2024-02-20 11:59:58,513 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2024-02-20 11:59:58,697 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:59:58,697 INFO L432 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:59:58,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:59:58,698 INFO L85 PathProgramCache]: Analyzing trace with hash 2140961102, now seen corresponding path program 15 times [2024-02-20 11:59:58,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:59:58,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342059629] [2024-02-20 11:59:58,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:59:58,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:59:58,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:59:58,882 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-20 11:59:58,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:59:58,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342059629] [2024-02-20 11:59:58,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342059629] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:59:58,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1260491411] [2024-02-20 11:59:58,883 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-02-20 11:59:58,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:59:58,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:59:58,884 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 11:59:58,884 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2024-02-20 11:59:59,039 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-02-20 11:59:59,039 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:59:59,040 INFO L262 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 25 conjunts are in the unsatisfiable core [2024-02-20 11:59:59,041 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:59:59,097 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-20 11:59:59,097 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 21 [2024-02-20 11:59:59,116 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-20 11:59:59,116 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:59:59,180 INFO L349 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2024-02-20 11:59:59,181 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 32 treesize of output 48 [2024-02-20 11:59:59,195 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-20 11:59:59,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1260491411] provided 1 perfect and 1 imperfect interpolant sequences [2024-02-20 11:59:59,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-02-20 11:59:59,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9, 9] total 18 [2024-02-20 11:59:59,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097910289] [2024-02-20 11:59:59,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:59:59,196 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-20 11:59:59,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:59:59,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-20 11:59:59,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2024-02-20 11:59:59,197 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 35 [2024-02-20 11:59:59,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 699 places, 2858 transitions, 386013 flow. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:59:59,197 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:59:59,197 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 35 [2024-02-20 11:59:59,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:00:22,034 INFO L124 PetriNetUnfolderBase]: 4463/8243 cut-off events. [2024-02-20 12:00:22,035 INFO L125 PetriNetUnfolderBase]: For 186195/186195 co-relation queries the response was YES. [2024-02-20 12:00:22,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 559434 conditions, 8243 events. 4463/8243 cut-off events. For 186195/186195 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 60718 event pairs, 7 based on Foata normal form. 0/7415 useless extension candidates. Maximal degree in co-relation 427319. Up to 7766 conditions per place. [2024-02-20 12:00:22,286 INFO L140 encePairwiseOnDemand]: 25/35 looper letters, 1556 selfloop transitions, 173 changer transitions 1180/2922 dead transitions. [2024-02-20 12:00:22,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 709 places, 2922 transitions, 400493 flow [2024-02-20 12:00:22,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-02-20 12:00:22,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-02-20 12:00:22,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 167 transitions. [2024-02-20 12:00:22,287 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.43376623376623374 [2024-02-20 12:00:22,288 INFO L308 CegarLoopForPetriNet]: 31 programPoint places, 678 predicate places. [2024-02-20 12:00:22,288 INFO L507 AbstractCegarLoop]: Abstraction has has 709 places, 2922 transitions, 400493 flow [2024-02-20 12:00:22,288 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:00:22,288 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:00:22,288 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] [2024-02-20 12:00:22,304 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2024-02-20 12:00:22,488 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67,48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:00:22,489 INFO L432 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 12:00:22,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:00:22,489 INFO L85 PathProgramCache]: Analyzing trace with hash 2050129166, now seen corresponding path program 16 times [2024-02-20 12:00:22,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:00:22,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861919800] [2024-02-20 12:00:22,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:00:22,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:00:22,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:00:22,681 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-20 12:00:22,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:00:22,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861919800] [2024-02-20 12:00:22,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861919800] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 12:00:22,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-20 12:00:22,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-20 12:00:22,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405058608] [2024-02-20 12:00:22,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 12:00:22,682 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-20 12:00:22,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:00:22,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-20 12:00:22,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-02-20 12:00:22,682 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 35 [2024-02-20 12:00:22,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 709 places, 2922 transitions, 400493 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:00:22,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:00:22,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 35 [2024-02-20 12:00:22,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:00:46,893 INFO L124 PetriNetUnfolderBase]: 4457/8237 cut-off events. [2024-02-20 12:00:46,894 INFO L125 PetriNetUnfolderBase]: For 203698/203698 co-relation queries the response was YES. [2024-02-20 12:00:46,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 567026 conditions, 8237 events. 4457/8237 cut-off events. For 203698/203698 co-relation queries the response was YES. Maximal size of possible extension queue 430. Compared 60619 event pairs, 7 based on Foata normal form. 0/7415 useless extension candidates. Maximal degree in co-relation 433050. Up to 7760 conditions per place. [2024-02-20 12:00:47,216 INFO L140 encePairwiseOnDemand]: 23/35 looper letters, 1535 selfloop transitions, 170 changer transitions 1204/2920 dead transitions. [2024-02-20 12:00:47,216 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 720 places, 2920 transitions, 405965 flow [2024-02-20 12:00:47,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-02-20 12:00:47,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-02-20 12:00:47,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 154 transitions. [2024-02-20 12:00:47,217 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.36666666666666664 [2024-02-20 12:00:47,218 INFO L308 CegarLoopForPetriNet]: 31 programPoint places, 689 predicate places. [2024-02-20 12:00:47,218 INFO L507 AbstractCegarLoop]: Abstraction has has 720 places, 2920 transitions, 405965 flow [2024-02-20 12:00:47,218 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:00:47,218 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:00:47,218 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] [2024-02-20 12:00:47,219 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-02-20 12:00:47,219 INFO L432 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 12:00:47,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:00:47,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1162930888, now seen corresponding path program 16 times [2024-02-20 12:00:47,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:00:47,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105247759] [2024-02-20 12:00:47,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:00:47,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:00:47,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:00:47,446 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-20 12:00:47,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:00:47,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105247759] [2024-02-20 12:00:47,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105247759] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 12:00:47,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-20 12:00:47,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-20 12:00:47,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141176767] [2024-02-20 12:00:47,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 12:00:47,447 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-20 12:00:47,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:00:47,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-20 12:00:47,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-02-20 12:00:47,449 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 35 [2024-02-20 12:00:47,449 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 720 places, 2920 transitions, 405965 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:00:47,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:00:47,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 35 [2024-02-20 12:00:47,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:01:07,962 INFO L124 PetriNetUnfolderBase]: 4351/8045 cut-off events. [2024-02-20 12:01:07,962 INFO L125 PetriNetUnfolderBase]: For 205351/205351 co-relation queries the response was YES. [2024-02-20 12:01:07,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 561528 conditions, 8045 events. 4351/8045 cut-off events. For 205351/205351 co-relation queries the response was YES. Maximal size of possible extension queue 421. Compared 59059 event pairs, 9 based on Foata normal form. 0/7255 useless extension candidates. Maximal degree in co-relation 425979. Up to 7570 conditions per place. [2024-02-20 12:01:08,189 INFO L140 encePairwiseOnDemand]: 23/35 looper letters, 1513 selfloop transitions, 139 changer transitions 1211/2874 dead transitions. [2024-02-20 12:01:08,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 728 places, 2874 transitions, 405166 flow [2024-02-20 12:01:08,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-20 12:01:08,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-20 12:01:08,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-02-20 12:01:08,190 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.3628571428571429 [2024-02-20 12:01:08,191 INFO L308 CegarLoopForPetriNet]: 31 programPoint places, 697 predicate places. [2024-02-20 12:01:08,191 INFO L507 AbstractCegarLoop]: Abstraction has has 728 places, 2874 transitions, 405166 flow [2024-02-20 12:01:08,191 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:01:08,191 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:01:08,191 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] [2024-02-20 12:01:08,191 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-02-20 12:01:08,191 INFO L432 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 12:01:08,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:01:08,191 INFO L85 PathProgramCache]: Analyzing trace with hash -1080783746, now seen corresponding path program 17 times [2024-02-20 12:01:08,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:01:08,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045632225] [2024-02-20 12:01:08,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:01:08,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:01:08,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:01:08,355 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-20 12:01:08,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:01:08,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045632225] [2024-02-20 12:01:08,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045632225] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 12:01:08,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-20 12:01:08,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-20 12:01:08,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649175945] [2024-02-20 12:01:08,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 12:01:08,356 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-20 12:01:08,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:01:08,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-20 12:01:08,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-02-20 12:01:08,356 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 35 [2024-02-20 12:01:08,356 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 728 places, 2874 transitions, 405166 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:01:08,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:01:08,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 35 [2024-02-20 12:01:08,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:01:26,799 INFO L124 PetriNetUnfolderBase]: 4249/7844 cut-off events. [2024-02-20 12:01:26,799 INFO L125 PetriNetUnfolderBase]: For 224114/224114 co-relation queries the response was YES. [2024-02-20 12:01:26,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 555073 conditions, 7844 events. 4249/7844 cut-off events. For 224114/224114 co-relation queries the response was YES. Maximal size of possible extension queue 412. Compared 57280 event pairs, 7 based on Foata normal form. 0/7078 useless extension candidates. Maximal degree in co-relation 418105. Up to 7372 conditions per place. [2024-02-20 12:01:27,038 INFO L140 encePairwiseOnDemand]: 23/35 looper letters, 1452 selfloop transitions, 131 changer transitions 1216/2810 dead transitions. [2024-02-20 12:01:27,038 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 736 places, 2810 transitions, 401579 flow [2024-02-20 12:01:27,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-20 12:01:27,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-20 12:01:27,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-02-20 12:01:27,039 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.35714285714285715 [2024-02-20 12:01:27,039 INFO L308 CegarLoopForPetriNet]: 31 programPoint places, 705 predicate places. [2024-02-20 12:01:27,039 INFO L507 AbstractCegarLoop]: Abstraction has has 736 places, 2810 transitions, 401579 flow [2024-02-20 12:01:27,039 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:01:27,039 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:01:27,039 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] [2024-02-20 12:01:27,039 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-02-20 12:01:27,040 INFO L432 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 12:01:27,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:01:27,040 INFO L85 PathProgramCache]: Analyzing trace with hash -2141527468, now seen corresponding path program 17 times [2024-02-20 12:01:27,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:01:27,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900927568] [2024-02-20 12:01:27,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:01:27,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:01:27,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:01:27,386 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-20 12:01:27,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:01:27,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900927568] [2024-02-20 12:01:27,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900927568] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:01:27,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1335308549] [2024-02-20 12:01:27,387 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-02-20 12:01:27,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:01:27,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:01:27,389 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:01:27,389 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2024-02-20 12:01:27,550 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-20 12:01:27,550 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:01:27,551 INFO L262 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 17 conjunts are in the unsatisfiable core [2024-02-20 12:01:27,552 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:01:27,589 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-20 12:01:27,590 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 25 [2024-02-20 12:01:27,608 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-20 12:01:27,609 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:01:27,671 INFO L349 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2024-02-20 12:01:27,672 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 40 treesize of output 56 [2024-02-20 12:01:27,687 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-20 12:01:27,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1335308549] provided 1 perfect and 1 imperfect interpolant sequences [2024-02-20 12:01:27,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-02-20 12:01:27,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9, 7] total 18 [2024-02-20 12:01:27,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880901788] [2024-02-20 12:01:27,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 12:01:27,688 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-20 12:01:27,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:01:27,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-20 12:01:27,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2024-02-20 12:01:27,689 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 35 [2024-02-20 12:01:27,689 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 736 places, 2810 transitions, 401579 flow. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:01:27,689 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:01:27,689 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 35 [2024-02-20 12:01:27,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:01:48,763 INFO L124 PetriNetUnfolderBase]: 4295/7956 cut-off events. [2024-02-20 12:01:48,763 INFO L125 PetriNetUnfolderBase]: For 224538/224538 co-relation queries the response was YES. [2024-02-20 12:01:48,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 570735 conditions, 7956 events. 4295/7956 cut-off events. For 224538/224538 co-relation queries the response was YES. Maximal size of possible extension queue 416. Compared 58511 event pairs, 7 based on Foata normal form. 0/7192 useless extension candidates. Maximal degree in co-relation 431620. Up to 7482 conditions per place. [2024-02-20 12:01:49,193 INFO L140 encePairwiseOnDemand]: 25/35 looper letters, 1467 selfloop transitions, 137 changer transitions 1216/2831 dead transitions. [2024-02-20 12:01:49,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 744 places, 2831 transitions, 410188 flow [2024-02-20 12:01:49,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-20 12:01:49,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-20 12:01:49,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 140 transitions. [2024-02-20 12:01:49,194 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-02-20 12:01:49,195 INFO L308 CegarLoopForPetriNet]: 31 programPoint places, 713 predicate places. [2024-02-20 12:01:49,195 INFO L507 AbstractCegarLoop]: Abstraction has has 744 places, 2831 transitions, 410188 flow [2024-02-20 12:01:49,195 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:01:49,195 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:01:49,195 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] [2024-02-20 12:01:49,209 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2024-02-20 12:01:49,407 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:01:49,407 INFO L432 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 12:01:49,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:01:49,408 INFO L85 PathProgramCache]: Analyzing trace with hash 1591264876, now seen corresponding path program 18 times [2024-02-20 12:01:49,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:01:49,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781998513] [2024-02-20 12:01:49,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:01:49,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:01:49,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:01:49,591 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-20 12:01:49,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:01:49,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781998513] [2024-02-20 12:01:49,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781998513] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 12:01:49,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-20 12:01:49,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-20 12:01:49,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86417350] [2024-02-20 12:01:49,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 12:01:49,592 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-20 12:01:49,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:01:49,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-20 12:01:49,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-02-20 12:01:49,592 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 35 [2024-02-20 12:01:49,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 744 places, 2831 transitions, 410188 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:01:49,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:01:49,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 35 [2024-02-20 12:01:49,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:02:11,601 INFO L124 PetriNetUnfolderBase]: 4193/7755 cut-off events. [2024-02-20 12:02:11,602 INFO L125 PetriNetUnfolderBase]: For 235878/235878 co-relation queries the response was YES. [2024-02-20 12:02:11,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 563796 conditions, 7755 events. 4193/7755 cut-off events. For 235878/235878 co-relation queries the response was YES. Maximal size of possible extension queue 407. Compared 56714 event pairs, 9 based on Foata normal form. 0/7015 useless extension candidates. Maximal degree in co-relation 423276. Up to 7284 conditions per place. [2024-02-20 12:02:11,886 INFO L140 encePairwiseOnDemand]: 23/35 looper letters, 1378 selfloop transitions, 157 changer transitions 1221/2767 dead transitions. [2024-02-20 12:02:11,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 752 places, 2767 transitions, 406259 flow [2024-02-20 12:02:11,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-20 12:02:11,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-20 12:02:11,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-02-20 12:02:11,888 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.3485714285714286 [2024-02-20 12:02:11,888 INFO L308 CegarLoopForPetriNet]: 31 programPoint places, 721 predicate places. [2024-02-20 12:02:11,888 INFO L507 AbstractCegarLoop]: Abstraction has has 752 places, 2767 transitions, 406259 flow [2024-02-20 12:02:11,888 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:02:11,889 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:02:11,889 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] [2024-02-20 12:02:11,889 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-02-20 12:02:11,889 INFO L432 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 12:02:11,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:02:11,889 INFO L85 PathProgramCache]: Analyzing trace with hash 317165400, now seen corresponding path program 18 times [2024-02-20 12:02:11,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:02:11,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470365303] [2024-02-20 12:02:11,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:02:11,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:02:11,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:02:12,074 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-20 12:02:12,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:02:12,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470365303] [2024-02-20 12:02:12,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470365303] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 12:02:12,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-20 12:02:12,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-20 12:02:12,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482176626] [2024-02-20 12:02:12,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 12:02:12,075 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-20 12:02:12,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:02:12,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-20 12:02:12,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-02-20 12:02:12,076 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 35 [2024-02-20 12:02:12,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 752 places, 2767 transitions, 406259 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:02:12,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:02:12,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 35 [2024-02-20 12:02:12,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:02:33,649 INFO L124 PetriNetUnfolderBase]: 4185/7747 cut-off events. [2024-02-20 12:02:33,650 INFO L125 PetriNetUnfolderBase]: For 246533/246533 co-relation queries the response was YES. [2024-02-20 12:02:33,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 570726 conditions, 7747 events. 4185/7747 cut-off events. For 246533/246533 co-relation queries the response was YES. Maximal size of possible extension queue 405. Compared 56645 event pairs, 7 based on Foata normal form. 0/7015 useless extension candidates. Maximal degree in co-relation 428357. Up to 7276 conditions per place. [2024-02-20 12:02:33,884 INFO L140 encePairwiseOnDemand]: 23/35 looper letters, 1404 selfloop transitions, 122 changer transitions 1228/2765 dead transitions. [2024-02-20 12:02:33,885 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 761 places, 2765 transitions, 411401 flow [2024-02-20 12:02:33,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-20 12:02:33,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-20 12:02:33,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-02-20 12:02:33,885 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.35714285714285715 [2024-02-20 12:02:33,886 INFO L308 CegarLoopForPetriNet]: 31 programPoint places, 730 predicate places. [2024-02-20 12:02:33,886 INFO L507 AbstractCegarLoop]: Abstraction has has 761 places, 2765 transitions, 411401 flow [2024-02-20 12:02:33,886 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:02:33,886 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:02:33,886 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] [2024-02-20 12:02:33,886 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-02-20 12:02:33,886 INFO L432 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 12:02:33,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:02:33,886 INFO L85 PathProgramCache]: Analyzing trace with hash -1442887540, now seen corresponding path program 19 times [2024-02-20 12:02:33,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:02:33,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852908011] [2024-02-20 12:02:33,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:02:33,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:02:33,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:02:34,155 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-20 12:02:34,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:02:34,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852908011] [2024-02-20 12:02:34,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852908011] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 12:02:34,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-20 12:02:34,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-20 12:02:34,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780380149] [2024-02-20 12:02:34,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 12:02:34,156 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-20 12:02:34,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:02:34,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-20 12:02:34,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-02-20 12:02:34,156 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 35 [2024-02-20 12:02:34,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 761 places, 2765 transitions, 411401 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:02:34,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:02:34,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 35 [2024-02-20 12:02:34,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:02:55,571 INFO L124 PetriNetUnfolderBase]: 4079/7555 cut-off events. [2024-02-20 12:02:55,571 INFO L125 PetriNetUnfolderBase]: For 256318/256318 co-relation queries the response was YES. [2024-02-20 12:02:55,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 563794 conditions, 7555 events. 4079/7555 cut-off events. For 256318/256318 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 55047 event pairs, 7 based on Foata normal form. 0/6855 useless extension candidates. Maximal degree in co-relation 419884. Up to 7086 conditions per place. [2024-02-20 12:02:55,814 INFO L140 encePairwiseOnDemand]: 23/35 looper letters, 1350 selfloop transitions, 115 changer transitions 1243/2719 dead transitions. [2024-02-20 12:02:55,815 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 771 places, 2719 transitions, 409832 flow [2024-02-20 12:02:55,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-02-20 12:02:55,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-02-20 12:02:55,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-02-20 12:02:55,815 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.35584415584415585 [2024-02-20 12:02:55,816 INFO L308 CegarLoopForPetriNet]: 31 programPoint places, 740 predicate places. [2024-02-20 12:02:55,816 INFO L507 AbstractCegarLoop]: Abstraction has has 771 places, 2719 transitions, 409832 flow [2024-02-20 12:02:55,816 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:02:55,816 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:02:55,816 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] [2024-02-20 12:02:55,816 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-02-20 12:02:55,816 INFO L432 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 12:02:55,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:02:55,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1762457752, now seen corresponding path program 19 times [2024-02-20 12:02:55,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:02:55,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018973878] [2024-02-20 12:02:55,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:02:55,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:02:55,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:02:56,004 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-20 12:02:56,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:02:56,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018973878] [2024-02-20 12:02:56,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018973878] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:02:56,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1524449360] [2024-02-20 12:02:56,005 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-02-20 12:02:56,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:02:56,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:02:56,006 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:02:56,007 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2024-02-20 12:02:56,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:02:56,172 INFO L262 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 15 conjunts are in the unsatisfiable core [2024-02-20 12:02:56,173 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:02:56,214 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2024-02-20 12:02:56,215 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2024-02-20 12:02:56,221 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-20 12:02:56,221 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:02:56,277 INFO L349 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2024-02-20 12:02:56,277 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 40 treesize of output 56 [2024-02-20 12:02:56,298 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-20 12:02:56,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1524449360] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:02:56,299 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:02:56,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 18 [2024-02-20 12:02:56,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87940716] [2024-02-20 12:02:56,299 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:02:56,299 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-02-20 12:02:56,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:02:56,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-02-20 12:02:56,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2024-02-20 12:02:56,300 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 35 [2024-02-20 12:02:56,300 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 771 places, 2719 transitions, 409832 flow. Second operand has 18 states, 18 states have (on average 7.5) internal successors, (135), 18 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:02:56,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:02:56,301 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 35 [2024-02-20 12:02:56,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:03:15,718 INFO L124 PetriNetUnfolderBase]: 3953/7330 cut-off events. [2024-02-20 12:03:15,718 INFO L125 PetriNetUnfolderBase]: For 279579/279579 co-relation queries the response was YES. [2024-02-20 12:03:15,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 554017 conditions, 7330 events. 3953/7330 cut-off events. For 279579/279579 co-relation queries the response was YES. Maximal size of possible extension queue 387. Compared 53111 event pairs, 7 based on Foata normal form. 0/6678 useless extension candidates. Maximal degree in co-relation 408730. Up to 6864 conditions per place. [2024-02-20 12:03:15,957 INFO L140 encePairwiseOnDemand]: 21/35 looper letters, 1278 selfloop transitions, 118 changer transitions 1243/2650 dead transitions. [2024-02-20 12:03:15,957 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 780 places, 2650 transitions, 404525 flow [2024-02-20 12:03:15,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-20 12:03:15,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-20 12:03:15,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 135 transitions. [2024-02-20 12:03:15,958 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.38571428571428573 [2024-02-20 12:03:15,958 INFO L308 CegarLoopForPetriNet]: 31 programPoint places, 749 predicate places. [2024-02-20 12:03:15,958 INFO L507 AbstractCegarLoop]: Abstraction has has 780 places, 2650 transitions, 404525 flow [2024-02-20 12:03:15,958 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 7.5) internal successors, (135), 18 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:03:15,958 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:03:15,958 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] [2024-02-20 12:03:15,974 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2024-02-20 12:03:16,158 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable75 [2024-02-20 12:03:16,159 INFO L432 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 12:03:16,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:03:16,159 INFO L85 PathProgramCache]: Analyzing trace with hash 206827982, now seen corresponding path program 20 times [2024-02-20 12:03:16,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:03:16,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127602806] [2024-02-20 12:03:16,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:03:16,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:03:16,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:03:16,327 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-20 12:03:16,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:03:16,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127602806] [2024-02-20 12:03:16,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127602806] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 12:03:16,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-20 12:03:16,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-20 12:03:16,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146897568] [2024-02-20 12:03:16,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 12:03:16,328 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-20 12:03:16,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:03:16,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-20 12:03:16,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-02-20 12:03:16,329 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 35 [2024-02-20 12:03:16,329 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 780 places, 2650 transitions, 404525 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:03:16,329 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:03:16,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 35 [2024-02-20 12:03:16,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:03:34,870 INFO L124 PetriNetUnfolderBase]: 3851/7129 cut-off events. [2024-02-20 12:03:34,870 INFO L125 PetriNetUnfolderBase]: For 279852/279852 co-relation queries the response was YES. [2024-02-20 12:03:34,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 545668 conditions, 7129 events. 3851/7129 cut-off events. For 279852/279852 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 51377 event pairs, 9 based on Foata normal form. 0/6501 useless extension candidates. Maximal degree in co-relation 399016. Up to 6666 conditions per place. [2024-02-20 12:03:35,240 INFO L140 encePairwiseOnDemand]: 23/35 looper letters, 1223 selfloop transitions, 104 changer transitions 1248/2586 dead transitions. [2024-02-20 12:03:35,241 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 788 places, 2586 transitions, 399722 flow [2024-02-20 12:03:35,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-20 12:03:35,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-20 12:03:35,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-02-20 12:03:35,242 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.3514285714285714 [2024-02-20 12:03:35,242 INFO L308 CegarLoopForPetriNet]: 31 programPoint places, 757 predicate places. [2024-02-20 12:03:35,242 INFO L507 AbstractCegarLoop]: Abstraction has has 788 places, 2586 transitions, 399722 flow [2024-02-20 12:03:35,242 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:03:35,242 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:03:35,242 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] [2024-02-20 12:03:35,242 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-02-20 12:03:35,243 INFO L432 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 12:03:35,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:03:35,243 INFO L85 PathProgramCache]: Analyzing trace with hash -887537256, now seen corresponding path program 20 times [2024-02-20 12:03:35,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:03:35,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621336455] [2024-02-20 12:03:35,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:03:35,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:03:35,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:03:35,425 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-20 12:03:35,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:03:35,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621336455] [2024-02-20 12:03:35,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621336455] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:03:35,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [259878489] [2024-02-20 12:03:35,426 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-20 12:03:35,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:03:35,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:03:35,427 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:03:35,428 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2024-02-20 12:03:35,588 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-20 12:03:35,589 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:03:35,590 INFO L262 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 25 conjunts are in the unsatisfiable core [2024-02-20 12:03:35,591 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:03:35,649 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-20 12:03:35,649 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 21 [2024-02-20 12:03:35,664 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-20 12:03:35,665 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:03:35,730 INFO L349 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2024-02-20 12:03:35,730 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 32 treesize of output 48 [2024-02-20 12:03:35,746 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-20 12:03:35,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [259878489] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:03:35,746 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:03:35,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 7] total 18 [2024-02-20 12:03:35,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144329961] [2024-02-20 12:03:35,746 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:03:35,747 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-02-20 12:03:35,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:03:35,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-02-20 12:03:35,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2024-02-20 12:03:35,748 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 35 [2024-02-20 12:03:35,748 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 788 places, 2586 transitions, 399722 flow. Second operand has 18 states, 18 states have (on average 7.444444444444445) internal successors, (134), 18 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:03:35,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:03:35,748 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 35 [2024-02-20 12:03:35,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:03:53,608 INFO L124 PetriNetUnfolderBase]: 3939/7280 cut-off events. [2024-02-20 12:03:53,608 INFO L125 PetriNetUnfolderBase]: For 290220/290220 co-relation queries the response was YES. [2024-02-20 12:03:53,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 564432 conditions, 7280 events. 3939/7280 cut-off events. For 290220/290220 co-relation queries the response was YES. Maximal size of possible extension queue 382. Compared 52405 event pairs, 7 based on Foata normal form. 0/6632 useless extension candidates. Maximal degree in co-relation 415787. Up to 6816 conditions per place. [2024-02-20 12:03:53,834 INFO L140 encePairwiseOnDemand]: 21/35 looper letters, 1191 selfloop transitions, 177 changer transitions 1248/2627 dead transitions. [2024-02-20 12:03:53,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 803 places, 2627 transitions, 411280 flow [2024-02-20 12:03:53,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-02-20 12:03:53,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-02-20 12:03:53,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 197 transitions. [2024-02-20 12:03:53,836 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.3517857142857143 [2024-02-20 12:03:53,836 INFO L308 CegarLoopForPetriNet]: 31 programPoint places, 772 predicate places. [2024-02-20 12:03:53,836 INFO L507 AbstractCegarLoop]: Abstraction has has 803 places, 2627 transitions, 411280 flow [2024-02-20 12:03:53,836 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 7.444444444444445) internal successors, (134), 18 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:03:53,836 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:03:53,836 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, 1] [2024-02-20 12:03:53,849 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2024-02-20 12:03:54,047 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable77 [2024-02-20 12:03:54,048 INFO L432 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 12:03:54,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:03:54,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1892365428, now seen corresponding path program 1 times [2024-02-20 12:03:54,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:03:54,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135532191] [2024-02-20 12:03:54,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:03:54,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:03:54,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:03:54,371 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-20 12:03:54,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:03:54,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135532191] [2024-02-20 12:03:54,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135532191] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:03:54,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [700985917] [2024-02-20 12:03:54,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:03:54,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:03:54,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:03:54,373 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:03:54,374 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2024-02-20 12:03:54,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:03:54,540 INFO L262 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 29 conjunts are in the unsatisfiable core [2024-02-20 12:03:54,541 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:03:54,762 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-20 12:03:54,762 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:03:55,101 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-20 12:03:55,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [700985917] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:03:55,101 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:03:55,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 10] total 24 [2024-02-20 12:03:55,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464513749] [2024-02-20 12:03:55,101 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:03:55,101 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-02-20 12:03:55,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:03:55,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-02-20 12:03:55,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=457, Unknown=0, NotChecked=0, Total=600 [2024-02-20 12:03:55,106 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 35 [2024-02-20 12:03:55,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 803 places, 2627 transitions, 411280 flow. Second operand has 25 states, 25 states have (on average 5.96) internal successors, (149), 25 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:03:55,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:03:55,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 35 [2024-02-20 12:03:55,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:04:52,825 INFO L124 PetriNetUnfolderBase]: 12301/22104 cut-off events. [2024-02-20 12:04:52,825 INFO L125 PetriNetUnfolderBase]: For 551598/551598 co-relation queries the response was YES. [2024-02-20 12:04:52,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1744003 conditions, 22104 events. 12301/22104 cut-off events. For 551598/551598 co-relation queries the response was YES. Maximal size of possible extension queue 1143. Compared 184951 event pairs, 126 based on Foata normal form. 16/19731 useless extension candidates. Maximal degree in co-relation 678432. Up to 21176 conditions per place. [2024-02-20 12:04:53,771 INFO L140 encePairwiseOnDemand]: 18/35 looper letters, 4696 selfloop transitions, 551 changer transitions 2793/8041 dead transitions. [2024-02-20 12:04:53,771 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 823 places, 8041 transitions, 1279840 flow [2024-02-20 12:04:53,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-02-20 12:04:53,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-02-20 12:04:53,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 301 transitions. [2024-02-20 12:04:53,772 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4095238095238095 [2024-02-20 12:04:53,773 INFO L308 CegarLoopForPetriNet]: 31 programPoint places, 792 predicate places. [2024-02-20 12:04:53,773 INFO L507 AbstractCegarLoop]: Abstraction has has 823 places, 8041 transitions, 1279840 flow [2024-02-20 12:04:53,773 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.96) internal successors, (149), 25 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:04:53,773 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:04:53,773 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:04:53,789 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2024-02-20 12:04:53,980 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2024-02-20 12:04:53,980 INFO L432 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 12:04:53,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:04:53,980 INFO L85 PathProgramCache]: Analyzing trace with hash -353761029, now seen corresponding path program 2 times [2024-02-20 12:04:53,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:04:53,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857401313] [2024-02-20 12:04:53,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:04:53,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:04:53,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:04:54,197 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-20 12:04:54,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:04:54,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857401313] [2024-02-20 12:04:54,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857401313] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:04:54,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1135443869] [2024-02-20 12:04:54,198 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-20 12:04:54,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:04:54,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:04:54,199 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:04:54,200 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2024-02-20 12:04:54,405 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-02-20 12:04:54,405 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:04:54,406 INFO L262 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 13 conjunts are in the unsatisfiable core [2024-02-20 12:04:54,407 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:04:54,517 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-02-20 12:04:54,517 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-02-20 12:04:54,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1135443869] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 12:04:54,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-02-20 12:04:54,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 16 [2024-02-20 12:04:54,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539723888] [2024-02-20 12:04:54,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 12:04:54,518 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-20 12:04:54,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:04:54,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-20 12:04:54,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2024-02-20 12:04:54,521 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 35 [2024-02-20 12:04:54,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 823 places, 8041 transitions, 1279840 flow. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:04:54,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:04:54,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 35 [2024-02-20 12:04:54,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Killed by 15