./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/mult-comm.wvr.c --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/mult-comm.wvr.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 80b1b132 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/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/weaver/mult-comm.wvr.c ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/mult-comm.wvr.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-?-80b1b13-m [2024-01-31 16:55:07,991 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-31 16:55:08,070 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-31 16:55:08,073 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-31 16:55:08,073 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-31 16:55:08,098 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-31 16:55:08,099 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-31 16:55:08,099 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-31 16:55:08,100 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-31 16:55:08,103 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-31 16:55:08,103 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-31 16:55:08,103 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-31 16:55:08,103 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-31 16:55:08,104 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-31 16:55:08,104 INFO L153 SettingsManager]: * Use SBE=true [2024-01-31 16:55:08,105 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-31 16:55:08,105 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-31 16:55:08,105 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-31 16:55:08,105 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-31 16:55:08,106 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-31 16:55:08,106 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-31 16:55:08,106 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-31 16:55:08,106 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-31 16:55:08,106 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-31 16:55:08,107 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-31 16:55:08,107 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-31 16:55:08,107 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-31 16:55:08,107 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-31 16:55:08,107 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-31 16:55:08,108 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-31 16:55:08,108 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-31 16:55:08,108 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-31 16:55:08,109 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 16:55:08,109 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-31 16:55:08,109 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-31 16:55:08,109 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-31 16:55:08,109 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-31 16:55:08,109 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-31 16:55:08,109 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-31 16:55:08,110 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-31 16:55:08,110 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-31 16:55:08,110 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-31 16:55:08,110 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-31 16:55:08,110 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-31 16:55:08,334 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-31 16:55:08,365 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-31 16:55:08,367 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-31 16:55:08,368 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-31 16:55:08,369 INFO L274 PluginConnector]: CDTParser initialized [2024-01-31 16:55:08,370 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/mult-comm.wvr.c [2024-01-31 16:55:09,529 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-31 16:55:09,668 INFO L384 CDTParser]: Found 1 translation units. [2024-01-31 16:55:09,668 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/mult-comm.wvr.c [2024-01-31 16:55:09,677 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a071ed6b/dafca48abbe14db4b23eb9391dee7b75/FLAGb62ffda58 [2024-01-31 16:55:09,691 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a071ed6b/dafca48abbe14db4b23eb9391dee7b75 [2024-01-31 16:55:09,694 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-31 16:55:09,694 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-31 16:55:09,695 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/mult-comm.wvr.yml/witness.yml [2024-01-31 16:55:09,779 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-31 16:55:09,780 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-31 16:55:09,781 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-31 16:55:09,781 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-31 16:55:09,784 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-31 16:55:09,785 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 04:55:09" (1/2) ... [2024-01-31 16:55:09,786 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a7fed3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:55:09, skipping insertion in model container [2024-01-31 16:55:09,786 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 04:55:09" (1/2) ... [2024-01-31 16:55:09,788 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2904446d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:55:09, skipping insertion in model container [2024-01-31 16:55:09,788 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:55:09" (2/2) ... [2024-01-31 16:55:09,789 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a7fed3c and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:55:09, skipping insertion in model container [2024-01-31 16:55:09,789 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:55:09" (2/2) ... [2024-01-31 16:55:09,789 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-31 16:55:09,805 INFO L93 nessWitnessExtractor]: Witness did not contain any usable entries. [2024-01-31 16:55:09,823 INFO L179 MainTranslator]: Built tables and reachable declarations [2024-01-31 16:55:09,938 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/mult-comm.wvr.c[1936,1949] [2024-01-31 16:55:09,942 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 16:55:09,949 INFO L204 MainTranslator]: Completed pre-run [2024-01-31 16:55:09,963 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/mult-comm.wvr.c[1936,1949] [2024-01-31 16:55:09,963 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 16:55:09,975 INFO L208 MainTranslator]: Completed translation [2024-01-31 16:55:09,975 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:55:09 WrapperNode [2024-01-31 16:55:09,975 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-31 16:55:09,976 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-31 16:55:09,976 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-31 16:55:09,976 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-31 16:55:09,982 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:55:09" (1/1) ... [2024-01-31 16:55:09,987 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:55:09" (1/1) ... [2024-01-31 16:55:10,005 INFO L138 Inliner]: procedures = 21, calls = 19, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 53 [2024-01-31 16:55:10,006 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-31 16:55:10,007 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-31 16:55:10,007 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-31 16:55:10,007 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-31 16:55:10,015 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:55:09" (1/1) ... [2024-01-31 16:55:10,015 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:55:09" (1/1) ... [2024-01-31 16:55:10,025 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:55:09" (1/1) ... [2024-01-31 16:55:10,042 INFO L175 MemorySlicer]: Split 6 memory accesses to 3 slices as follows [2, 2, 2]. 33 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2024-01-31 16:55:10,042 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:55:09" (1/1) ... [2024-01-31 16:55:10,043 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:55:09" (1/1) ... [2024-01-31 16:55:10,056 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:55:09" (1/1) ... [2024-01-31 16:55:10,059 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:55:09" (1/1) ... [2024-01-31 16:55:10,064 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:55:09" (1/1) ... [2024-01-31 16:55:10,066 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:55:09" (1/1) ... [2024-01-31 16:55:10,069 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-31 16:55:10,071 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-31 16:55:10,071 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-31 16:55:10,071 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-31 16:55:10,072 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:55:09" (1/1) ... [2024-01-31 16:55:10,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 16:55:10,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:55:10,097 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-01-31 16:55:10,099 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-01-31 16:55:10,144 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-31 16:55:10,144 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-01-31 16:55:10,144 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-01-31 16:55:10,144 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-01-31 16:55:10,144 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-01-31 16:55:10,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-31 16:55:10,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-31 16:55:10,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-31 16:55:10,144 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-31 16:55:10,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-31 16:55:10,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-31 16:55:10,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-31 16:55:10,145 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-31 16:55:10,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-31 16:55:10,145 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-31 16:55:10,145 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-31 16:55:10,145 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-31 16:55:10,145 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-31 16:55:10,147 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-31 16:55:10,259 INFO L244 CfgBuilder]: Building ICFG [2024-01-31 16:55:10,260 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-31 16:55:10,408 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-31 16:55:10,409 INFO L293 CfgBuilder]: Performing block encoding [2024-01-31 16:55:10,509 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-31 16:55:10,510 INFO L320 CfgBuilder]: Removed 2 assume(true) statements. [2024-01-31 16:55:10,510 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:55:10 BoogieIcfgContainer [2024-01-31 16:55:10,510 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-31 16:55:10,512 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-31 16:55:10,512 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-31 16:55:10,514 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-31 16:55:10,514 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 04:55:09" (1/4) ... [2024-01-31 16:55:10,515 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19b8491 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 04:55:10, skipping insertion in model container [2024-01-31 16:55:10,515 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:55:09" (2/4) ... [2024-01-31 16:55:10,515 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19b8491 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 04:55:10, skipping insertion in model container [2024-01-31 16:55:10,515 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:55:09" (3/4) ... [2024-01-31 16:55:10,516 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19b8491 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 04:55:10, skipping insertion in model container [2024-01-31 16:55:10,516 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:55:10" (4/4) ... [2024-01-31 16:55:10,517 INFO L112 eAbstractionObserver]: Analyzing ICFG mult-comm.wvr.c [2024-01-31 16:55:10,534 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-31 16:55:10,534 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-01-31 16:55:10,534 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-31 16:55:10,586 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-01-31 16:55:10,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 24 places, 19 transitions, 52 flow [2024-01-31 16:55:10,632 INFO L124 PetriNetUnfolderBase]: 2/17 cut-off events. [2024-01-31 16:55:10,632 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-01-31 16:55:10,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26 conditions, 17 events. 2/17 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 9 event pairs, 0 based on Foata normal form. 0/14 useless extension candidates. Maximal degree in co-relation 11. Up to 2 conditions per place. [2024-01-31 16:55:10,634 INFO L82 GeneralOperation]: Start removeDead. Operand has 24 places, 19 transitions, 52 flow [2024-01-31 16:55:10,637 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 21 places, 16 transitions, 44 flow [2024-01-31 16:55:10,644 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-31 16:55:10,649 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@ac6641a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-31 16:55:10,649 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-01-31 16:55:10,656 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-31 16:55:10,656 INFO L124 PetriNetUnfolderBase]: 2/15 cut-off events. [2024-01-31 16:55:10,656 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-01-31 16:55:10,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:55:10,657 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:55:10,657 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 16:55:10,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:55:10,661 INFO L85 PathProgramCache]: Analyzing trace with hash -416623653, now seen corresponding path program 1 times [2024-01-31 16:55:10,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:55:10,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972380668] [2024-01-31 16:55:10,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:55:10,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:55:10,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:55:11,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:55:11,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:55:11,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972380668] [2024-01-31 16:55:11,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972380668] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:55:11,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:55:11,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-31 16:55:11,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341064019] [2024-01-31 16:55:11,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:55:11,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 16:55:11,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:55:11,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 16:55:11,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 16:55:11,054 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 19 [2024-01-31 16:55:11,055 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 16 transitions, 44 flow. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:55:11,055 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:55:11,056 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 19 [2024-01-31 16:55:11,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:55:11,149 INFO L124 PetriNetUnfolderBase]: 74/135 cut-off events. [2024-01-31 16:55:11,149 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2024-01-31 16:55:11,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 293 conditions, 135 events. 74/135 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 358 event pairs, 24 based on Foata normal form. 1/104 useless extension candidates. Maximal degree in co-relation 220. Up to 79 conditions per place. [2024-01-31 16:55:11,154 INFO L140 encePairwiseOnDemand]: 15/19 looper letters, 23 selfloop transitions, 3 changer transitions 1/28 dead transitions. [2024-01-31 16:55:11,154 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 28 transitions, 131 flow [2024-01-31 16:55:11,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 16:55:11,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 16:55:11,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 37 transitions. [2024-01-31 16:55:11,166 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6491228070175439 [2024-01-31 16:55:11,167 INFO L175 Difference]: Start difference. First operand has 21 places, 16 transitions, 44 flow. Second operand 3 states and 37 transitions. [2024-01-31 16:55:11,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 28 transitions, 131 flow [2024-01-31 16:55:11,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 28 transitions, 117 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-01-31 16:55:11,173 INFO L231 Difference]: Finished difference. Result has 20 places, 18 transitions, 55 flow [2024-01-31 16:55:11,174 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=19, PETRI_DIFFERENCE_MINUEND_FLOW=36, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=55, PETRI_PLACES=20, PETRI_TRANSITIONS=18} [2024-01-31 16:55:11,180 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, -1 predicate places. [2024-01-31 16:55:11,180 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 18 transitions, 55 flow [2024-01-31 16:55:11,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:55:11,180 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:55:11,180 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:55:11,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-31 16:55:11,180 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 16:55:11,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:55:11,181 INFO L85 PathProgramCache]: Analyzing trace with hash 287926024, now seen corresponding path program 1 times [2024-01-31 16:55:11,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:55:11,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123362051] [2024-01-31 16:55:11,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:55:11,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:55:11,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:55:11,441 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:55:11,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:55:11,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123362051] [2024-01-31 16:55:11,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123362051] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 16:55:11,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [422678197] [2024-01-31 16:55:11,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:55:11,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:55:11,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:55:11,445 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 16:55:11,484 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-01-31 16:55:11,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:55:11,558 INFO L262 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 16 conjunts are in the unsatisfiable core [2024-01-31 16:55:11,562 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 16:55:11,751 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:55:11,751 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 16:55:12,007 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:55:12,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [422678197] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 16:55:12,008 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 16:55:12,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 6] total 14 [2024-01-31 16:55:12,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444455375] [2024-01-31 16:55:12,009 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 16:55:12,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-01-31 16:55:12,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:55:12,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-01-31 16:55:12,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2024-01-31 16:55:12,013 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 19 [2024-01-31 16:55:12,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 18 transitions, 55 flow. Second operand has 15 states, 15 states have (on average 5.4) internal successors, (81), 15 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:55:12,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:55:12,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 19 [2024-01-31 16:55:12,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:55:12,236 INFO L124 PetriNetUnfolderBase]: 94/182 cut-off events. [2024-01-31 16:55:12,236 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2024-01-31 16:55:12,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 437 conditions, 182 events. 94/182 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 579 event pairs, 3 based on Foata normal form. 3/185 useless extension candidates. Maximal degree in co-relation 114. Up to 85 conditions per place. [2024-01-31 16:55:12,238 INFO L140 encePairwiseOnDemand]: 11/19 looper letters, 31 selfloop transitions, 15 changer transitions 25/72 dead transitions. [2024-01-31 16:55:12,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 72 transitions, 336 flow [2024-01-31 16:55:12,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-01-31 16:55:12,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-01-31 16:55:12,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 113 transitions. [2024-01-31 16:55:12,240 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4574898785425101 [2024-01-31 16:55:12,240 INFO L175 Difference]: Start difference. First operand has 20 places, 18 transitions, 55 flow. Second operand 13 states and 113 transitions. [2024-01-31 16:55:12,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 72 transitions, 336 flow [2024-01-31 16:55:12,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 72 transitions, 330 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-31 16:55:12,242 INFO L231 Difference]: Finished difference. Result has 38 places, 30 transitions, 153 flow [2024-01-31 16:55:12,242 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=19, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=153, PETRI_PLACES=38, PETRI_TRANSITIONS=30} [2024-01-31 16:55:12,243 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 17 predicate places. [2024-01-31 16:55:12,243 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 30 transitions, 153 flow [2024-01-31 16:55:12,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.4) internal successors, (81), 15 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:55:12,243 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:55:12,243 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:55:12,255 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-01-31 16:55:12,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:55:12,455 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 16:55:12,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:55:12,455 INFO L85 PathProgramCache]: Analyzing trace with hash -876591693, now seen corresponding path program 1 times [2024-01-31 16:55:12,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:55:12,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280821313] [2024-01-31 16:55:12,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:55:12,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:55:12,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:55:12,587 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:55:12,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:55:12,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280821313] [2024-01-31 16:55:12,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280821313] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 16:55:12,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [315663972] [2024-01-31 16:55:12,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:55:12,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:55:12,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:55:12,605 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 16:55:12,635 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-01-31 16:55:12,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:55:12,704 INFO L262 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 10 conjunts are in the unsatisfiable core [2024-01-31 16:55:12,705 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 16:55:12,786 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:55:12,786 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 16:55:12,879 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:55:12,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [315663972] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 16:55:12,879 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 16:55:12,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 8 [2024-01-31 16:55:12,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959149440] [2024-01-31 16:55:12,880 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 16:55:12,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:55:12,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:55:12,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:55:12,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:55:12,881 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 19 [2024-01-31 16:55:12,881 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 30 transitions, 153 flow. Second operand has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 9 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:55:12,881 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:55:12,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 19 [2024-01-31 16:55:12,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:55:12,962 INFO L124 PetriNetUnfolderBase]: 85/159 cut-off events. [2024-01-31 16:55:12,963 INFO L125 PetriNetUnfolderBase]: For 132/132 co-relation queries the response was YES. [2024-01-31 16:55:12,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 542 conditions, 159 events. 85/159 cut-off events. For 132/132 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 443 event pairs, 15 based on Foata normal form. 1/160 useless extension candidates. Maximal degree in co-relation 524. Up to 102 conditions per place. [2024-01-31 16:55:12,964 INFO L140 encePairwiseOnDemand]: 13/19 looper letters, 26 selfloop transitions, 7 changer transitions 15/49 dead transitions. [2024-01-31 16:55:12,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 49 transitions, 309 flow [2024-01-31 16:55:12,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:55:12,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:55:12,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 60 transitions. [2024-01-31 16:55:12,965 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5263157894736842 [2024-01-31 16:55:12,966 INFO L175 Difference]: Start difference. First operand has 38 places, 30 transitions, 153 flow. Second operand 6 states and 60 transitions. [2024-01-31 16:55:12,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 49 transitions, 309 flow [2024-01-31 16:55:12,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 49 transitions, 277 flow, removed 13 selfloop flow, removed 4 redundant places. [2024-01-31 16:55:12,968 INFO L231 Difference]: Finished difference. Result has 35 places, 28 transitions, 130 flow [2024-01-31 16:55:12,968 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=19, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=130, PETRI_PLACES=35, PETRI_TRANSITIONS=28} [2024-01-31 16:55:12,969 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 14 predicate places. [2024-01-31 16:55:12,969 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 28 transitions, 130 flow [2024-01-31 16:55:12,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 9 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:55:12,969 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:55:12,970 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:55:13,001 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-01-31 16:55:13,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-01-31 16:55:13,202 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 16:55:13,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:55:13,203 INFO L85 PathProgramCache]: Analyzing trace with hash 1170675074, now seen corresponding path program 2 times [2024-01-31 16:55:13,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:55:13,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462038742] [2024-01-31 16:55:13,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:55:13,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:55:13,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:55:13,335 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:55:13,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:55:13,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462038742] [2024-01-31 16:55:13,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462038742] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 16:55:13,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1802268932] [2024-01-31 16:55:13,336 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-01-31 16:55:13,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:55:13,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:55:13,353 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 16:55:13,385 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-01-31 16:55:13,435 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-01-31 16:55:13,435 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 16:55:13,436 INFO L262 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 10 conjunts are in the unsatisfiable core [2024-01-31 16:55:13,437 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 16:55:13,487 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:55:13,487 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 16:55:13,549 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:55:13,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1802268932] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 16:55:13,549 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 16:55:13,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 10 [2024-01-31 16:55:13,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026796961] [2024-01-31 16:55:13,550 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 16:55:13,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-31 16:55:13,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:55:13,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-31 16:55:13,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2024-01-31 16:55:13,551 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 19 [2024-01-31 16:55:13,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 28 transitions, 130 flow. Second operand has 11 states, 11 states have (on average 5.909090909090909) internal successors, (65), 11 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:55:13,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:55:13,551 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 19 [2024-01-31 16:55:13,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:55:13,681 INFO L124 PetriNetUnfolderBase]: 129/242 cut-off events. [2024-01-31 16:55:13,681 INFO L125 PetriNetUnfolderBase]: For 180/180 co-relation queries the response was YES. [2024-01-31 16:55:13,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 783 conditions, 242 events. 129/242 cut-off events. For 180/180 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 807 event pairs, 19 based on Foata normal form. 3/245 useless extension candidates. Maximal degree in co-relation 763. Up to 121 conditions per place. [2024-01-31 16:55:13,683 INFO L140 encePairwiseOnDemand]: 13/19 looper letters, 44 selfloop transitions, 18 changer transitions 12/75 dead transitions. [2024-01-31 16:55:13,683 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 75 transitions, 450 flow [2024-01-31 16:55:13,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-31 16:55:13,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-31 16:55:13,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 99 transitions. [2024-01-31 16:55:13,685 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5210526315789473 [2024-01-31 16:55:13,685 INFO L175 Difference]: Start difference. First operand has 35 places, 28 transitions, 130 flow. Second operand 10 states and 99 transitions. [2024-01-31 16:55:13,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 75 transitions, 450 flow [2024-01-31 16:55:13,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 75 transitions, 432 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-01-31 16:55:13,687 INFO L231 Difference]: Finished difference. Result has 43 places, 40 transitions, 249 flow [2024-01-31 16:55:13,687 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=19, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=249, PETRI_PLACES=43, PETRI_TRANSITIONS=40} [2024-01-31 16:55:13,688 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 22 predicate places. [2024-01-31 16:55:13,688 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 40 transitions, 249 flow [2024-01-31 16:55:13,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.909090909090909) internal successors, (65), 11 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:55:13,688 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:55:13,689 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:55:13,699 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-01-31 16:55:13,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:55:13,900 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 16:55:13,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:55:13,901 INFO L85 PathProgramCache]: Analyzing trace with hash 1923309464, now seen corresponding path program 3 times [2024-01-31 16:55:13,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:55:13,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774850273] [2024-01-31 16:55:13,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:55:13,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:55:13,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:55:14,014 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:55:14,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:55:14,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774850273] [2024-01-31 16:55:14,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774850273] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 16:55:14,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [363895564] [2024-01-31 16:55:14,015 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-01-31 16:55:14,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:55:14,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:55:14,029 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 16:55:14,055 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-01-31 16:55:14,083 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-01-31 16:55:14,083 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 16:55:14,084 INFO L262 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 10 conjunts are in the unsatisfiable core [2024-01-31 16:55:14,086 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 16:55:14,131 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:55:14,132 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 16:55:14,245 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:55:14,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [363895564] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 16:55:14,245 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 16:55:14,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 9 [2024-01-31 16:55:14,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793344238] [2024-01-31 16:55:14,246 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 16:55:14,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:55:14,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:55:14,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:55:14,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:55:14,248 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 19 [2024-01-31 16:55:14,248 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 40 transitions, 249 flow. Second operand has 10 states, 10 states have (on average 6.1) internal successors, (61), 10 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:55:14,248 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:55:14,248 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 19 [2024-01-31 16:55:14,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:55:14,340 INFO L124 PetriNetUnfolderBase]: 145/269 cut-off events. [2024-01-31 16:55:14,340 INFO L125 PetriNetUnfolderBase]: For 570/570 co-relation queries the response was YES. [2024-01-31 16:55:14,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1044 conditions, 269 events. 145/269 cut-off events. For 570/570 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 936 event pairs, 29 based on Foata normal form. 2/271 useless extension candidates. Maximal degree in co-relation 983. Up to 207 conditions per place. [2024-01-31 16:55:14,343 INFO L140 encePairwiseOnDemand]: 13/19 looper letters, 45 selfloop transitions, 15 changer transitions 8/69 dead transitions. [2024-01-31 16:55:14,343 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 69 transitions, 504 flow [2024-01-31 16:55:14,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:55:14,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:55:14,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 77 transitions. [2024-01-31 16:55:14,345 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.506578947368421 [2024-01-31 16:55:14,345 INFO L175 Difference]: Start difference. First operand has 43 places, 40 transitions, 249 flow. Second operand 8 states and 77 transitions. [2024-01-31 16:55:14,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 69 transitions, 504 flow [2024-01-31 16:55:14,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 69 transitions, 433 flow, removed 30 selfloop flow, removed 3 redundant places. [2024-01-31 16:55:14,350 INFO L231 Difference]: Finished difference. Result has 50 places, 47 transitions, 288 flow [2024-01-31 16:55:14,350 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=19, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=288, PETRI_PLACES=50, PETRI_TRANSITIONS=47} [2024-01-31 16:55:14,351 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 29 predicate places. [2024-01-31 16:55:14,352 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 47 transitions, 288 flow [2024-01-31 16:55:14,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.1) internal successors, (61), 10 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:55:14,352 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:55:14,352 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:55:14,365 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-01-31 16:55:14,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:55:14,565 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 16:55:14,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:55:14,566 INFO L85 PathProgramCache]: Analyzing trace with hash 1933770975, now seen corresponding path program 2 times [2024-01-31 16:55:14,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:55:14,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230560352] [2024-01-31 16:55:14,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:55:14,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:55:14,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:55:14,720 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:55:14,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:55:14,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230560352] [2024-01-31 16:55:14,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230560352] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 16:55:14,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [599195368] [2024-01-31 16:55:14,721 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-01-31 16:55:14,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:55:14,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:55:14,737 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 16:55:14,768 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-01-31 16:55:14,813 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-01-31 16:55:14,813 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 16:55:14,814 INFO L262 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 16 conjunts are in the unsatisfiable core [2024-01-31 16:55:14,816 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 16:55:14,878 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:55:14,878 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 16:55:14,977 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:55:14,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [599195368] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 16:55:14,977 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 16:55:14,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 6] total 14 [2024-01-31 16:55:14,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986871955] [2024-01-31 16:55:14,978 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 16:55:14,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-01-31 16:55:14,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:55:14,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-01-31 16:55:14,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=133, Unknown=0, NotChecked=0, Total=210 [2024-01-31 16:55:14,980 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 19 [2024-01-31 16:55:14,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 47 transitions, 288 flow. Second operand has 15 states, 15 states have (on average 5.2) internal successors, (78), 15 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:55:14,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:55:14,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 19 [2024-01-31 16:55:14,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:55:15,210 INFO L124 PetriNetUnfolderBase]: 189/352 cut-off events. [2024-01-31 16:55:15,210 INFO L125 PetriNetUnfolderBase]: For 936/936 co-relation queries the response was YES. [2024-01-31 16:55:15,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1366 conditions, 352 events. 189/352 cut-off events. For 936/936 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1365 event pairs, 35 based on Foata normal form. 3/355 useless extension candidates. Maximal degree in co-relation 1309. Up to 241 conditions per place. [2024-01-31 16:55:15,213 INFO L140 encePairwiseOnDemand]: 11/19 looper letters, 56 selfloop transitions, 27 changer transitions 14/98 dead transitions. [2024-01-31 16:55:15,213 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 98 transitions, 724 flow [2024-01-31 16:55:15,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-01-31 16:55:15,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-01-31 16:55:15,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 119 transitions. [2024-01-31 16:55:15,215 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4473684210526316 [2024-01-31 16:55:15,215 INFO L175 Difference]: Start difference. First operand has 50 places, 47 transitions, 288 flow. Second operand 14 states and 119 transitions. [2024-01-31 16:55:15,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 98 transitions, 724 flow [2024-01-31 16:55:15,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 98 transitions, 650 flow, removed 29 selfloop flow, removed 4 redundant places. [2024-01-31 16:55:15,219 INFO L231 Difference]: Finished difference. Result has 65 places, 63 transitions, 436 flow [2024-01-31 16:55:15,219 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=19, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=436, PETRI_PLACES=65, PETRI_TRANSITIONS=63} [2024-01-31 16:55:15,220 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 44 predicate places. [2024-01-31 16:55:15,221 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 63 transitions, 436 flow [2024-01-31 16:55:15,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.2) internal successors, (78), 15 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:55:15,221 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:55:15,221 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:55:15,248 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-01-31 16:55:15,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:55:15,433 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 16:55:15,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:55:15,433 INFO L85 PathProgramCache]: Analyzing trace with hash 347374822, now seen corresponding path program 1 times [2024-01-31 16:55:15,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:55:15,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424363269] [2024-01-31 16:55:15,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:55:15,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:55:15,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:55:15,766 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:55:15,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:55:15,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424363269] [2024-01-31 16:55:15,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424363269] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 16:55:15,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1235536533] [2024-01-31 16:55:15,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:55:15,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:55:15,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:55:15,767 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 16:55:15,771 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-01-31 16:55:15,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:55:15,837 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 21 conjunts are in the unsatisfiable core [2024-01-31 16:55:15,837 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 16:55:16,209 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:55:16,209 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 16:55:16,587 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:55:16,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1235536533] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 16:55:16,588 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 16:55:16,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2024-01-31 16:55:16,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979260356] [2024-01-31 16:55:16,588 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 16:55:16,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-01-31 16:55:16,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:55:16,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-01-31 16:55:16,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2024-01-31 16:55:16,590 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 19 [2024-01-31 16:55:16,590 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 63 transitions, 436 flow. Second operand has 18 states, 18 states have (on average 4.944444444444445) internal successors, (89), 18 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:55:16,590 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:55:16,590 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 19 [2024-01-31 16:55:16,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:55:20,502 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.26s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 16:55:24,653 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 16:55:25,022 INFO L124 PetriNetUnfolderBase]: 271/522 cut-off events. [2024-01-31 16:55:25,022 INFO L125 PetriNetUnfolderBase]: For 1347/1347 co-relation queries the response was YES. [2024-01-31 16:55:25,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2114 conditions, 522 events. 271/522 cut-off events. For 1347/1347 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2396 event pairs, 21 based on Foata normal form. 3/525 useless extension candidates. Maximal degree in co-relation 2057. Up to 231 conditions per place. [2024-01-31 16:55:25,025 INFO L140 encePairwiseOnDemand]: 11/19 looper letters, 93 selfloop transitions, 51 changer transitions 35/180 dead transitions. [2024-01-31 16:55:25,025 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 180 transitions, 1328 flow [2024-01-31 16:55:25,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-01-31 16:55:25,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-01-31 16:55:25,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 214 transitions. [2024-01-31 16:55:25,028 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4692982456140351 [2024-01-31 16:55:25,028 INFO L175 Difference]: Start difference. First operand has 65 places, 63 transitions, 436 flow. Second operand 24 states and 214 transitions. [2024-01-31 16:55:25,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 180 transitions, 1328 flow [2024-01-31 16:55:25,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 180 transitions, 1207 flow, removed 53 selfloop flow, removed 5 redundant places. [2024-01-31 16:55:25,040 INFO L231 Difference]: Finished difference. Result has 92 places, 90 transitions, 671 flow [2024-01-31 16:55:25,041 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=19, PETRI_DIFFERENCE_MINUEND_FLOW=335, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=671, PETRI_PLACES=92, PETRI_TRANSITIONS=90} [2024-01-31 16:55:25,042 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 71 predicate places. [2024-01-31 16:55:25,043 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 90 transitions, 671 flow [2024-01-31 16:55:25,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.944444444444445) internal successors, (89), 18 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:55:25,044 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:55:25,044 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:55:25,056 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-01-31 16:55:25,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:55:25,255 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 16:55:25,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:55:25,255 INFO L85 PathProgramCache]: Analyzing trace with hash -919466126, now seen corresponding path program 2 times [2024-01-31 16:55:25,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:55:25,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239025557] [2024-01-31 16:55:25,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:55:25,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:55:25,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:55:25,689 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:55:25,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:55:25,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239025557] [2024-01-31 16:55:25,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239025557] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 16:55:25,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [439676938] [2024-01-31 16:55:25,689 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-01-31 16:55:25,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:55:25,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:55:25,690 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) [2024-01-31 16:55:25,694 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-01-31 16:55:25,746 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-01-31 16:55:25,746 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 16:55:25,747 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 21 conjunts are in the unsatisfiable core [2024-01-31 16:55:25,748 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 16:55:25,940 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:55:25,940 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 16:55:26,316 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:55:26,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [439676938] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 16:55:26,316 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 16:55:26,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2024-01-31 16:55:26,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558347022] [2024-01-31 16:55:26,316 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 16:55:26,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-01-31 16:55:26,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:55:26,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-01-31 16:55:26,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2024-01-31 16:55:26,317 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 19 [2024-01-31 16:55:26,317 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 90 transitions, 671 flow. Second operand has 19 states, 19 states have (on average 4.842105263157895) internal successors, (92), 19 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:55:26,317 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:55:26,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 19 [2024-01-31 16:55:26,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:55:27,418 INFO L124 PetriNetUnfolderBase]: 312/630 cut-off events. [2024-01-31 16:55:27,418 INFO L125 PetriNetUnfolderBase]: For 4044/4044 co-relation queries the response was YES. [2024-01-31 16:55:27,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3060 conditions, 630 events. 312/630 cut-off events. For 4044/4044 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3195 event pairs, 23 based on Foata normal form. 3/629 useless extension candidates. Maximal degree in co-relation 2919. Up to 265 conditions per place. [2024-01-31 16:55:27,422 INFO L140 encePairwiseOnDemand]: 11/19 looper letters, 111 selfloop transitions, 75 changer transitions 22/209 dead transitions. [2024-01-31 16:55:27,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 209 transitions, 1890 flow [2024-01-31 16:55:27,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-01-31 16:55:27,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2024-01-31 16:55:27,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 256 transitions. [2024-01-31 16:55:27,423 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44912280701754387 [2024-01-31 16:55:27,423 INFO L175 Difference]: Start difference. First operand has 92 places, 90 transitions, 671 flow. Second operand 30 states and 256 transitions. [2024-01-31 16:55:27,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 209 transitions, 1890 flow [2024-01-31 16:55:27,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 209 transitions, 1648 flow, removed 102 selfloop flow, removed 12 redundant places. [2024-01-31 16:55:27,450 INFO L231 Difference]: Finished difference. Result has 121 places, 119 transitions, 1097 flow [2024-01-31 16:55:27,451 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=19, PETRI_DIFFERENCE_MINUEND_FLOW=517, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1097, PETRI_PLACES=121, PETRI_TRANSITIONS=119} [2024-01-31 16:55:27,451 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 100 predicate places. [2024-01-31 16:55:27,451 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 119 transitions, 1097 flow [2024-01-31 16:55:27,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.842105263157895) internal successors, (92), 19 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:55:27,451 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:55:27,452 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:55:27,474 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-01-31 16:55:27,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:55:27,660 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 16:55:27,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:55:27,661 INFO L85 PathProgramCache]: Analyzing trace with hash 1657157464, now seen corresponding path program 3 times [2024-01-31 16:55:27,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:55:27,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348435755] [2024-01-31 16:55:27,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:55:27,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:55:27,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:55:28,107 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:55:28,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:55:28,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348435755] [2024-01-31 16:55:28,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348435755] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 16:55:28,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1637062343] [2024-01-31 16:55:28,109 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-01-31 16:55:28,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:55:28,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:55:28,124 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) [2024-01-31 16:55:28,152 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-01-31 16:55:28,228 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-01-31 16:55:28,228 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 16:55:28,229 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 21 conjunts are in the unsatisfiable core [2024-01-31 16:55:28,230 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 16:55:28,398 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:55:28,398 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 16:55:28,765 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:55:28,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1637062343] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 16:55:28,766 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 16:55:28,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2024-01-31 16:55:28,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139282292] [2024-01-31 16:55:28,766 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 16:55:28,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-01-31 16:55:28,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:55:28,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-01-31 16:55:28,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2024-01-31 16:55:28,767 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 19 [2024-01-31 16:55:28,768 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 119 transitions, 1097 flow. Second operand has 19 states, 19 states have (on average 4.842105263157895) internal successors, (92), 19 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:55:28,768 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:55:28,768 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 19 [2024-01-31 16:55:28,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:55:29,649 INFO L124 PetriNetUnfolderBase]: 314/623 cut-off events. [2024-01-31 16:55:29,650 INFO L125 PetriNetUnfolderBase]: For 6757/6757 co-relation queries the response was YES. [2024-01-31 16:55:29,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3396 conditions, 623 events. 314/623 cut-off events. For 6757/6757 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3117 event pairs, 23 based on Foata normal form. 4/625 useless extension candidates. Maximal degree in co-relation 3279. Up to 279 conditions per place. [2024-01-31 16:55:29,654 INFO L140 encePairwiseOnDemand]: 11/19 looper letters, 97 selfloop transitions, 78 changer transitions 17/193 dead transitions. [2024-01-31 16:55:29,654 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 193 transitions, 1859 flow [2024-01-31 16:55:29,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-01-31 16:55:29,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-01-31 16:55:29,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 214 transitions. [2024-01-31 16:55:29,656 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45052631578947366 [2024-01-31 16:55:29,656 INFO L175 Difference]: Start difference. First operand has 121 places, 119 transitions, 1097 flow. Second operand 25 states and 214 transitions. [2024-01-31 16:55:29,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 193 transitions, 1859 flow [2024-01-31 16:55:29,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 193 transitions, 1522 flow, removed 148 selfloop flow, removed 13 redundant places. [2024-01-31 16:55:29,676 INFO L231 Difference]: Finished difference. Result has 132 places, 125 transitions, 1116 flow [2024-01-31 16:55:29,676 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=19, PETRI_DIFFERENCE_MINUEND_FLOW=805, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=1116, PETRI_PLACES=132, PETRI_TRANSITIONS=125} [2024-01-31 16:55:29,677 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 111 predicate places. [2024-01-31 16:55:29,677 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 125 transitions, 1116 flow [2024-01-31 16:55:29,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.842105263157895) internal successors, (92), 19 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:55:29,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:55:29,677 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:55:29,688 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-01-31 16:55:29,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-01-31 16:55:29,882 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 16:55:29,883 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:55:29,883 INFO L85 PathProgramCache]: Analyzing trace with hash 1130127026, now seen corresponding path program 4 times [2024-01-31 16:55:29,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:55:29,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796491292] [2024-01-31 16:55:29,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:55:29,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:55:29,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:55:30,130 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:55:30,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:55:30,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796491292] [2024-01-31 16:55:30,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796491292] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 16:55:30,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2210546] [2024-01-31 16:55:30,131 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-01-31 16:55:30,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:55:30,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:55:30,132 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) [2024-01-31 16:55:30,148 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-01-31 16:55:30,193 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-01-31 16:55:30,194 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 16:55:30,195 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 21 conjunts are in the unsatisfiable core [2024-01-31 16:55:30,196 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 16:55:30,303 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:55:30,303 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 16:55:30,991 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:55:30,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2210546] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 16:55:30,991 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 16:55:30,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2024-01-31 16:55:30,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951955928] [2024-01-31 16:55:30,992 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 16:55:30,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-01-31 16:55:30,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:55:30,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-01-31 16:55:30,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2024-01-31 16:55:30,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 19 [2024-01-31 16:55:30,997 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 125 transitions, 1116 flow. Second operand has 18 states, 18 states have (on average 5.0) internal successors, (90), 18 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:55:30,998 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:55:30,998 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 19 [2024-01-31 16:55:30,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:55:31,599 INFO L124 PetriNetUnfolderBase]: 372/722 cut-off events. [2024-01-31 16:55:31,599 INFO L125 PetriNetUnfolderBase]: For 9096/9096 co-relation queries the response was YES. [2024-01-31 16:55:31,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3968 conditions, 722 events. 372/722 cut-off events. For 9096/9096 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3650 event pairs, 57 based on Foata normal form. 3/723 useless extension candidates. Maximal degree in co-relation 3875. Up to 573 conditions per place. [2024-01-31 16:55:31,604 INFO L140 encePairwiseOnDemand]: 11/19 looper letters, 140 selfloop transitions, 37 changer transitions 17/195 dead transitions. [2024-01-31 16:55:31,605 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 195 transitions, 2041 flow [2024-01-31 16:55:31,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-01-31 16:55:31,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-01-31 16:55:31,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 140 transitions. [2024-01-31 16:55:31,606 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4605263157894737 [2024-01-31 16:55:31,606 INFO L175 Difference]: Start difference. First operand has 132 places, 125 transitions, 1116 flow. Second operand 16 states and 140 transitions. [2024-01-31 16:55:31,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 195 transitions, 2041 flow [2024-01-31 16:55:31,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 195 transitions, 1666 flow, removed 119 selfloop flow, removed 25 redundant places. [2024-01-31 16:55:31,628 INFO L231 Difference]: Finished difference. Result has 127 places, 148 transitions, 1257 flow [2024-01-31 16:55:31,628 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=19, PETRI_DIFFERENCE_MINUEND_FLOW=863, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1257, PETRI_PLACES=127, PETRI_TRANSITIONS=148} [2024-01-31 16:55:31,628 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 106 predicate places. [2024-01-31 16:55:31,628 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 148 transitions, 1257 flow [2024-01-31 16:55:31,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.0) internal successors, (90), 18 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:55:31,629 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:55:31,629 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:55:31,640 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-01-31 16:55:31,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-01-31 16:55:31,840 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 16:55:31,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:55:31,841 INFO L85 PathProgramCache]: Analyzing trace with hash 241555988, now seen corresponding path program 5 times [2024-01-31 16:55:31,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:55:31,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650872901] [2024-01-31 16:55:31,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:55:31,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:55:31,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:55:32,165 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:55:32,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:55:32,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650872901] [2024-01-31 16:55:32,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650872901] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 16:55:32,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [432283688] [2024-01-31 16:55:32,166 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-01-31 16:55:32,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:55:32,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:55:32,167 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) [2024-01-31 16:55:32,195 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-01-31 16:55:32,232 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-01-31 16:55:32,232 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 16:55:32,233 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 21 conjunts are in the unsatisfiable core [2024-01-31 16:55:32,234 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 16:55:32,349 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:55:32,349 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 16:55:33,330 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:55:33,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [432283688] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 16:55:33,330 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 16:55:33,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2024-01-31 16:55:33,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872182874] [2024-01-31 16:55:33,331 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 16:55:33,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-01-31 16:55:33,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:55:33,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-01-31 16:55:33,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2024-01-31 16:55:33,331 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 19 [2024-01-31 16:55:33,332 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 148 transitions, 1257 flow. Second operand has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:55:33,332 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:55:33,332 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 19 [2024-01-31 16:55:33,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:55:33,952 INFO L124 PetriNetUnfolderBase]: 415/801 cut-off events. [2024-01-31 16:55:33,952 INFO L125 PetriNetUnfolderBase]: For 3593/3593 co-relation queries the response was YES. [2024-01-31 16:55:33,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4069 conditions, 801 events. 415/801 cut-off events. For 3593/3593 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 4158 event pairs, 56 based on Foata normal form. 2/799 useless extension candidates. Maximal degree in co-relation 3967. Up to 633 conditions per place. [2024-01-31 16:55:33,957 INFO L140 encePairwiseOnDemand]: 11/19 looper letters, 150 selfloop transitions, 54 changer transitions 11/216 dead transitions. [2024-01-31 16:55:33,957 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 216 transitions, 2188 flow [2024-01-31 16:55:33,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-01-31 16:55:33,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-01-31 16:55:33,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 160 transitions. [2024-01-31 16:55:33,959 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40100250626566414 [2024-01-31 16:55:33,959 INFO L175 Difference]: Start difference. First operand has 127 places, 148 transitions, 1257 flow. Second operand 21 states and 160 transitions. [2024-01-31 16:55:33,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 216 transitions, 2188 flow [2024-01-31 16:55:33,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 216 transitions, 2094 flow, removed 45 selfloop flow, removed 2 redundant places. [2024-01-31 16:55:33,972 INFO L231 Difference]: Finished difference. Result has 152 places, 173 transitions, 1670 flow [2024-01-31 16:55:33,973 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=19, PETRI_DIFFERENCE_MINUEND_FLOW=1171, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1670, PETRI_PLACES=152, PETRI_TRANSITIONS=173} [2024-01-31 16:55:33,973 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 131 predicate places. [2024-01-31 16:55:33,973 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 173 transitions, 1670 flow [2024-01-31 16:55:33,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:55:33,973 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:55:33,974 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:55:33,990 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-01-31 16:55:34,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-01-31 16:55:34,185 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 16:55:34,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:55:34,185 INFO L85 PathProgramCache]: Analyzing trace with hash 1944438898, now seen corresponding path program 6 times [2024-01-31 16:55:34,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:55:34,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059532949] [2024-01-31 16:55:34,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:55:34,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:55:34,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:55:34,488 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:55:34,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:55:34,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059532949] [2024-01-31 16:55:34,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059532949] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 16:55:34,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1150458364] [2024-01-31 16:55:34,489 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-01-31 16:55:34,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:55:34,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:55:34,491 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) [2024-01-31 16:55:34,500 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-01-31 16:55:34,563 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-01-31 16:55:34,563 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 16:55:34,564 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 21 conjunts are in the unsatisfiable core [2024-01-31 16:55:34,565 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 16:55:34,691 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:55:34,691 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 16:55:35,480 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:55:35,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1150458364] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 16:55:35,480 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 16:55:35,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2024-01-31 16:55:35,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126383899] [2024-01-31 16:55:35,480 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 16:55:35,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-01-31 16:55:35,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:55:35,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-01-31 16:55:35,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2024-01-31 16:55:35,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 19 [2024-01-31 16:55:35,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 173 transitions, 1670 flow. Second operand has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:55:35,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:55:35,482 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 19 [2024-01-31 16:55:35,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:55:36,017 INFO L124 PetriNetUnfolderBase]: 420/816 cut-off events. [2024-01-31 16:55:36,018 INFO L125 PetriNetUnfolderBase]: For 4288/4288 co-relation queries the response was YES. [2024-01-31 16:55:36,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4368 conditions, 816 events. 420/816 cut-off events. For 4288/4288 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 4307 event pairs, 58 based on Foata normal form. 4/814 useless extension candidates. Maximal degree in co-relation 4282. Up to 700 conditions per place. [2024-01-31 16:55:36,024 INFO L140 encePairwiseOnDemand]: 11/19 looper letters, 159 selfloop transitions, 44 changer transitions 10/214 dead transitions. [2024-01-31 16:55:36,024 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 214 transitions, 2326 flow [2024-01-31 16:55:36,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-01-31 16:55:36,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-01-31 16:55:36,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 137 transitions. [2024-01-31 16:55:36,025 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40058479532163743 [2024-01-31 16:55:36,025 INFO L175 Difference]: Start difference. First operand has 152 places, 173 transitions, 1670 flow. Second operand 18 states and 137 transitions. [2024-01-31 16:55:36,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 214 transitions, 2326 flow [2024-01-31 16:55:36,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 214 transitions, 2147 flow, removed 69 selfloop flow, removed 11 redundant places. [2024-01-31 16:55:36,043 INFO L231 Difference]: Finished difference. Result has 162 places, 179 transitions, 1718 flow [2024-01-31 16:55:36,043 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=19, PETRI_DIFFERENCE_MINUEND_FLOW=1515, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1718, PETRI_PLACES=162, PETRI_TRANSITIONS=179} [2024-01-31 16:55:36,044 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 141 predicate places. [2024-01-31 16:55:36,044 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 179 transitions, 1718 flow [2024-01-31 16:55:36,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:55:36,053 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:55:36,053 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:55:36,063 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-01-31 16:55:36,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-01-31 16:55:36,263 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 16:55:36,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:55:36,264 INFO L85 PathProgramCache]: Analyzing trace with hash -1476787718, now seen corresponding path program 7 times [2024-01-31 16:55:36,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:55:36,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576361830] [2024-01-31 16:55:36,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:55:36,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:55:36,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:55:36,534 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:55:36,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:55:36,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576361830] [2024-01-31 16:55:36,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576361830] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 16:55:36,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [134361670] [2024-01-31 16:55:36,535 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-01-31 16:55:36,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:55:36,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:55:36,546 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) [2024-01-31 16:55:36,548 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-01-31 16:55:36,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:55:36,658 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 21 conjunts are in the unsatisfiable core [2024-01-31 16:55:36,660 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 16:55:36,783 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:55:36,784 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 16:55:37,536 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:55:37,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [134361670] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 16:55:37,537 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 16:55:37,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2024-01-31 16:55:37,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454163244] [2024-01-31 16:55:37,537 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 16:55:37,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-01-31 16:55:37,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:55:37,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-01-31 16:55:37,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2024-01-31 16:55:37,538 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 19 [2024-01-31 16:55:37,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 179 transitions, 1718 flow. Second operand has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:55:37,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:55:37,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 19 [2024-01-31 16:55:37,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:55:38,295 INFO L124 PetriNetUnfolderBase]: 416/799 cut-off events. [2024-01-31 16:55:38,295 INFO L125 PetriNetUnfolderBase]: For 4180/4180 co-relation queries the response was YES. [2024-01-31 16:55:38,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4293 conditions, 799 events. 416/799 cut-off events. For 4180/4180 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 4102 event pairs, 56 based on Foata normal form. 2/793 useless extension candidates. Maximal degree in co-relation 4230. Up to 649 conditions per place. [2024-01-31 16:55:38,301 INFO L140 encePairwiseOnDemand]: 11/19 looper letters, 158 selfloop transitions, 58 changer transitions 8/225 dead transitions. [2024-01-31 16:55:38,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 225 transitions, 2370 flow [2024-01-31 16:55:38,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-01-31 16:55:38,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-01-31 16:55:38,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 175 transitions. [2024-01-31 16:55:38,303 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40045766590389015 [2024-01-31 16:55:38,303 INFO L175 Difference]: Start difference. First operand has 162 places, 179 transitions, 1718 flow. Second operand 23 states and 175 transitions. [2024-01-31 16:55:38,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 225 transitions, 2370 flow [2024-01-31 16:55:38,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 225 transitions, 2280 flow, removed 27 selfloop flow, removed 9 redundant places. [2024-01-31 16:55:38,321 INFO L231 Difference]: Finished difference. Result has 177 places, 182 transitions, 1824 flow [2024-01-31 16:55:38,321 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=19, PETRI_DIFFERENCE_MINUEND_FLOW=1628, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1824, PETRI_PLACES=177, PETRI_TRANSITIONS=182} [2024-01-31 16:55:38,322 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 156 predicate places. [2024-01-31 16:55:38,322 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 182 transitions, 1824 flow [2024-01-31 16:55:38,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:55:38,322 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:55:38,323 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:55:38,334 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-01-31 16:55:38,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-01-31 16:55:38,534 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 16:55:38,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:55:38,534 INFO L85 PathProgramCache]: Analyzing trace with hash 584072084, now seen corresponding path program 8 times [2024-01-31 16:55:38,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:55:38,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133016774] [2024-01-31 16:55:38,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:55:38,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:55:38,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:55:38,877 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:55:38,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:55:38,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133016774] [2024-01-31 16:55:38,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133016774] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 16:55:38,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1578733470] [2024-01-31 16:55:38,878 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-01-31 16:55:38,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:55:38,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:55:38,879 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) [2024-01-31 16:55:38,880 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-01-31 16:55:38,992 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-01-31 16:55:38,992 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 16:55:38,993 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 21 conjunts are in the unsatisfiable core [2024-01-31 16:55:38,994 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 16:55:39,116 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:55:39,116 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 16:55:40,187 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:55:40,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1578733470] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 16:55:40,188 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 16:55:40,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2024-01-31 16:55:40,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359851409] [2024-01-31 16:55:40,188 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 16:55:40,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-01-31 16:55:40,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:55:40,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-01-31 16:55:40,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2024-01-31 16:55:40,190 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 19 [2024-01-31 16:55:40,190 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 182 transitions, 1824 flow. Second operand has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:55:40,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:55:40,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 19 [2024-01-31 16:55:40,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:55:40,809 INFO L124 PetriNetUnfolderBase]: 446/856 cut-off events. [2024-01-31 16:55:40,809 INFO L125 PetriNetUnfolderBase]: For 5842/5842 co-relation queries the response was YES. [2024-01-31 16:55:40,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4829 conditions, 856 events. 446/856 cut-off events. For 5842/5842 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4516 event pairs, 57 based on Foata normal form. 2/850 useless extension candidates. Maximal degree in co-relation 4765. Up to 662 conditions per place. [2024-01-31 16:55:40,815 INFO L140 encePairwiseOnDemand]: 11/19 looper letters, 158 selfloop transitions, 62 changer transitions 10/231 dead transitions. [2024-01-31 16:55:40,815 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 231 transitions, 2622 flow [2024-01-31 16:55:40,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-01-31 16:55:40,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-01-31 16:55:40,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 141 transitions. [2024-01-31 16:55:40,818 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41228070175438597 [2024-01-31 16:55:40,818 INFO L175 Difference]: Start difference. First operand has 177 places, 182 transitions, 1824 flow. Second operand 18 states and 141 transitions. [2024-01-31 16:55:40,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 231 transitions, 2622 flow [2024-01-31 16:55:40,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 231 transitions, 2426 flow, removed 53 selfloop flow, removed 22 redundant places. [2024-01-31 16:55:40,841 INFO L231 Difference]: Finished difference. Result has 176 places, 192 transitions, 1988 flow [2024-01-31 16:55:40,842 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=19, PETRI_DIFFERENCE_MINUEND_FLOW=1636, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1988, PETRI_PLACES=176, PETRI_TRANSITIONS=192} [2024-01-31 16:55:40,843 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 155 predicate places. [2024-01-31 16:55:40,843 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 192 transitions, 1988 flow [2024-01-31 16:55:40,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:55:40,843 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:55:40,843 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:55:40,854 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-01-31 16:55:41,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-01-31 16:55:41,054 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 16:55:41,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:55:41,054 INFO L85 PathProgramCache]: Analyzing trace with hash -1869216766, now seen corresponding path program 9 times [2024-01-31 16:55:41,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:55:41,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41870317] [2024-01-31 16:55:41,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:55:41,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:55:41,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:55:41,345 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:55:41,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:55:41,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41870317] [2024-01-31 16:55:41,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41870317] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 16:55:41,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [107244412] [2024-01-31 16:55:41,346 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-01-31 16:55:41,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:55:41,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:55:41,354 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) [2024-01-31 16:55:41,356 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-01-31 16:55:41,462 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-01-31 16:55:41,462 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 16:55:41,463 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 21 conjunts are in the unsatisfiable core [2024-01-31 16:55:41,464 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 16:55:41,585 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:55:41,585 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 16:55:42,336 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:55:42,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [107244412] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 16:55:42,336 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 16:55:42,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2024-01-31 16:55:42,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584302469] [2024-01-31 16:55:42,336 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 16:55:42,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-01-31 16:55:42,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:55:42,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-01-31 16:55:42,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2024-01-31 16:55:42,337 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 19 [2024-01-31 16:55:42,337 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 192 transitions, 1988 flow. Second operand has 18 states, 18 states have (on average 5.0) internal successors, (90), 18 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:55:42,337 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:55:42,337 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 19 [2024-01-31 16:55:42,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:55:43,103 INFO L124 PetriNetUnfolderBase]: 449/863 cut-off events. [2024-01-31 16:55:43,103 INFO L125 PetriNetUnfolderBase]: For 5845/5845 co-relation queries the response was YES. [2024-01-31 16:55:43,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4986 conditions, 863 events. 449/863 cut-off events. For 5845/5845 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4530 event pairs, 59 based on Foata normal form. 2/859 useless extension candidates. Maximal degree in co-relation 4888. Up to 666 conditions per place. [2024-01-31 16:55:43,110 INFO L140 encePairwiseOnDemand]: 11/19 looper letters, 162 selfloop transitions, 63 changer transitions 10/236 dead transitions. [2024-01-31 16:55:43,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 236 transitions, 2691 flow [2024-01-31 16:55:43,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-01-31 16:55:43,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-01-31 16:55:43,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 149 transitions. [2024-01-31 16:55:43,113 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43567251461988304 [2024-01-31 16:55:43,114 INFO L175 Difference]: Start difference. First operand has 176 places, 192 transitions, 1988 flow. Second operand 18 states and 149 transitions. [2024-01-31 16:55:43,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 236 transitions, 2691 flow [2024-01-31 16:55:43,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 236 transitions, 2498 flow, removed 70 selfloop flow, removed 11 redundant places. [2024-01-31 16:55:43,138 INFO L231 Difference]: Finished difference. Result has 184 places, 196 transitions, 2074 flow [2024-01-31 16:55:43,139 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=19, PETRI_DIFFERENCE_MINUEND_FLOW=1827, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2074, PETRI_PLACES=184, PETRI_TRANSITIONS=196} [2024-01-31 16:55:43,140 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 163 predicate places. [2024-01-31 16:55:43,140 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 196 transitions, 2074 flow [2024-01-31 16:55:43,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.0) internal successors, (90), 18 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:55:43,140 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:55:43,140 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:55:43,166 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-01-31 16:55:43,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:55:43,351 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 16:55:43,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:55:43,352 INFO L85 PathProgramCache]: Analyzing trace with hash 1082264250, now seen corresponding path program 10 times [2024-01-31 16:55:43,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:55:43,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799836258] [2024-01-31 16:55:43,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:55:43,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:55:43,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:55:43,604 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:55:43,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:55:43,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799836258] [2024-01-31 16:55:43,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799836258] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 16:55:43,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1838458477] [2024-01-31 16:55:43,605 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-01-31 16:55:43,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:55:43,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:55:43,607 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) [2024-01-31 16:55:43,612 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-01-31 16:55:43,726 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-01-31 16:55:43,727 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 16:55:43,728 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 21 conjunts are in the unsatisfiable core [2024-01-31 16:55:43,729 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 16:55:43,843 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:55:43,843 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 16:55:44,396 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:55:44,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1838458477] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 16:55:44,397 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 16:55:44,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2024-01-31 16:55:44,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721861039] [2024-01-31 16:55:44,397 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 16:55:44,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-01-31 16:55:44,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:55:44,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-01-31 16:55:44,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2024-01-31 16:55:44,398 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 19 [2024-01-31 16:55:44,398 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 196 transitions, 2074 flow. Second operand has 18 states, 18 states have (on average 4.944444444444445) internal successors, (89), 18 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:55:44,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:55:44,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 19 [2024-01-31 16:55:44,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:55:45,014 INFO L124 PetriNetUnfolderBase]: 468/898 cut-off events. [2024-01-31 16:55:45,015 INFO L125 PetriNetUnfolderBase]: For 6028/6028 co-relation queries the response was YES. [2024-01-31 16:55:45,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5335 conditions, 898 events. 468/898 cut-off events. For 6028/6028 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 4782 event pairs, 54 based on Foata normal form. 2/892 useless extension candidates. Maximal degree in co-relation 5265. Up to 744 conditions per place. [2024-01-31 16:55:45,021 INFO L140 encePairwiseOnDemand]: 10/19 looper letters, 196 selfloop transitions, 46 changer transitions 16/259 dead transitions. [2024-01-31 16:55:45,021 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 259 transitions, 3034 flow [2024-01-31 16:55:45,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-01-31 16:55:45,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-01-31 16:55:45,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 156 transitions. [2024-01-31 16:55:45,023 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45614035087719296 [2024-01-31 16:55:45,023 INFO L175 Difference]: Start difference. First operand has 184 places, 196 transitions, 2074 flow. Second operand 18 states and 156 transitions. [2024-01-31 16:55:45,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 259 transitions, 3034 flow [2024-01-31 16:55:45,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 259 transitions, 2833 flow, removed 65 selfloop flow, removed 14 redundant places. [2024-01-31 16:55:45,045 INFO L231 Difference]: Finished difference. Result has 193 places, 210 transitions, 2244 flow [2024-01-31 16:55:45,045 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=19, PETRI_DIFFERENCE_MINUEND_FLOW=1878, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2244, PETRI_PLACES=193, PETRI_TRANSITIONS=210} [2024-01-31 16:55:45,046 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 172 predicate places. [2024-01-31 16:55:45,046 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 210 transitions, 2244 flow [2024-01-31 16:55:45,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.944444444444445) internal successors, (89), 18 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:55:45,046 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:55:45,047 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:55:45,057 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-01-31 16:55:45,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-01-31 16:55:45,257 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 16:55:45,258 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:55:45,258 INFO L85 PathProgramCache]: Analyzing trace with hash 77725818, now seen corresponding path program 11 times [2024-01-31 16:55:45,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:55:45,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049609683] [2024-01-31 16:55:45,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:55:45,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:55:45,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:55:45,528 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:55:45,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:55:45,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049609683] [2024-01-31 16:55:45,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049609683] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 16:55:45,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [499693944] [2024-01-31 16:55:45,528 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-01-31 16:55:45,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:55:45,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:55:45,529 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) [2024-01-31 16:55:45,555 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-01-31 16:55:45,592 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-01-31 16:55:45,593 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 16:55:45,593 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 21 conjunts are in the unsatisfiable core [2024-01-31 16:55:45,594 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 16:55:45,702 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:55:45,702 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 16:55:46,380 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:55:46,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [499693944] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 16:55:46,386 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 16:55:46,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2024-01-31 16:55:46,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126855347] [2024-01-31 16:55:46,386 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 16:55:46,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-01-31 16:55:46,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:55:46,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-01-31 16:55:46,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2024-01-31 16:55:46,392 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 19 [2024-01-31 16:55:46,392 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 210 transitions, 2244 flow. Second operand has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:55:46,392 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:55:46,392 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 19 [2024-01-31 16:55:46,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:55:47,145 INFO L124 PetriNetUnfolderBase]: 488/945 cut-off events. [2024-01-31 16:55:47,145 INFO L125 PetriNetUnfolderBase]: For 7373/7373 co-relation queries the response was YES. [2024-01-31 16:55:47,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5812 conditions, 945 events. 488/945 cut-off events. For 7373/7373 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 5135 event pairs, 54 based on Foata normal form. 2/939 useless extension candidates. Maximal degree in co-relation 5693. Up to 753 conditions per place. [2024-01-31 16:55:47,157 INFO L140 encePairwiseOnDemand]: 10/19 looper letters, 190 selfloop transitions, 60 changer transitions 13/264 dead transitions. [2024-01-31 16:55:47,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 264 transitions, 3200 flow [2024-01-31 16:55:47,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-01-31 16:55:47,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-01-31 16:55:47,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 167 transitions. [2024-01-31 16:55:47,158 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39952153110047844 [2024-01-31 16:55:47,158 INFO L175 Difference]: Start difference. First operand has 193 places, 210 transitions, 2244 flow. Second operand 22 states and 167 transitions. [2024-01-31 16:55:47,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 264 transitions, 3200 flow [2024-01-31 16:55:47,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 264 transitions, 3011 flow, removed 68 selfloop flow, removed 12 redundant places. [2024-01-31 16:55:47,186 INFO L231 Difference]: Finished difference. Result has 207 places, 220 transitions, 2455 flow [2024-01-31 16:55:47,186 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=19, PETRI_DIFFERENCE_MINUEND_FLOW=2069, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2455, PETRI_PLACES=207, PETRI_TRANSITIONS=220} [2024-01-31 16:55:47,187 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 186 predicate places. [2024-01-31 16:55:47,187 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 220 transitions, 2455 flow [2024-01-31 16:55:47,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:55:47,187 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:55:47,187 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:55:47,198 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-01-31 16:55:47,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-01-31 16:55:47,389 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 16:55:47,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:55:47,389 INFO L85 PathProgramCache]: Analyzing trace with hash -1729478571, now seen corresponding path program 4 times [2024-01-31 16:55:47,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:55:47,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117990050] [2024-01-31 16:55:47,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:55:47,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:55:47,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:55:47,566 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:55:47,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:55:47,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117990050] [2024-01-31 16:55:47,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117990050] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 16:55:47,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1931306491] [2024-01-31 16:55:47,567 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-01-31 16:55:47,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:55:47,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:55:47,576 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) [2024-01-31 16:55:47,590 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-01-31 16:55:47,656 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-01-31 16:55:47,656 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 16:55:47,657 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 15 conjunts are in the unsatisfiable core [2024-01-31 16:55:47,658 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 16:55:47,752 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:55:47,753 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 16:55:52,275 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:55:52,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1931306491] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 16:55:52,276 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 16:55:52,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 6] total 14 [2024-01-31 16:55:52,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976753923] [2024-01-31 16:55:52,276 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 16:55:52,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-01-31 16:55:52,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:55:52,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-01-31 16:55:52,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=150, Unknown=1, NotChecked=0, Total=210 [2024-01-31 16:55:52,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 19 [2024-01-31 16:55:52,277 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 220 transitions, 2455 flow. Second operand has 15 states, 15 states have (on average 5.6) internal successors, (84), 15 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:55:52,277 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:55:52,277 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 19 [2024-01-31 16:55:52,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:55:52,708 INFO L124 PetriNetUnfolderBase]: 488/937 cut-off events. [2024-01-31 16:55:52,708 INFO L125 PetriNetUnfolderBase]: For 8406/8406 co-relation queries the response was YES. [2024-01-31 16:55:52,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5875 conditions, 937 events. 488/937 cut-off events. For 8406/8406 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 5015 event pairs, 66 based on Foata normal form. 3/932 useless extension candidates. Maximal degree in co-relation 5777. Up to 827 conditions per place. [2024-01-31 16:55:52,720 INFO L140 encePairwiseOnDemand]: 12/19 looper letters, 198 selfloop transitions, 29 changer transitions 22/250 dead transitions. [2024-01-31 16:55:52,720 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 250 transitions, 3131 flow [2024-01-31 16:55:52,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-01-31 16:55:52,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-01-31 16:55:52,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 103 transitions. [2024-01-31 16:55:52,723 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4517543859649123 [2024-01-31 16:55:52,723 INFO L175 Difference]: Start difference. First operand has 207 places, 220 transitions, 2455 flow. Second operand 12 states and 103 transitions. [2024-01-31 16:55:52,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 250 transitions, 3131 flow [2024-01-31 16:55:52,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 250 transitions, 2866 flow, removed 91 selfloop flow, removed 21 redundant places. [2024-01-31 16:55:52,754 INFO L231 Difference]: Finished difference. Result has 198 places, 215 transitions, 2209 flow [2024-01-31 16:55:52,754 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=19, PETRI_DIFFERENCE_MINUEND_FLOW=2192, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2209, PETRI_PLACES=198, PETRI_TRANSITIONS=215} [2024-01-31 16:55:52,755 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 177 predicate places. [2024-01-31 16:55:52,755 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 215 transitions, 2209 flow [2024-01-31 16:55:52,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.6) internal successors, (84), 15 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:55:52,755 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:55:52,755 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:55:52,766 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-01-31 16:55:52,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-01-31 16:55:52,956 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 16:55:52,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:55:52,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1884006258, now seen corresponding path program 12 times [2024-01-31 16:55:52,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:55:52,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937867534] [2024-01-31 16:55:52,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:55:52,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:55:52,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:55:53,433 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:55:53,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:55:53,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937867534] [2024-01-31 16:55:53,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937867534] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 16:55:53,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1507795566] [2024-01-31 16:55:53,433 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-01-31 16:55:53,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:55:53,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:55:53,434 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) [2024-01-31 16:55:53,436 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-01-31 16:55:53,505 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-01-31 16:55:53,505 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 16:55:53,506 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 21 conjunts are in the unsatisfiable core [2024-01-31 16:55:53,507 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 16:55:53,795 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:55:53,795 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 16:55:54,212 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:55:54,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1507795566] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 16:55:54,212 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 16:55:54,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2024-01-31 16:55:54,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666329876] [2024-01-31 16:55:54,213 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 16:55:54,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-01-31 16:55:54,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:55:54,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-01-31 16:55:54,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2024-01-31 16:55:54,215 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 19 [2024-01-31 16:55:54,215 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 215 transitions, 2209 flow. Second operand has 19 states, 19 states have (on average 4.842105263157895) internal successors, (92), 19 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:55:54,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:55:54,216 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 19 [2024-01-31 16:55:54,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:55:55,724 INFO L124 PetriNetUnfolderBase]: 569/1088 cut-off events. [2024-01-31 16:55:55,724 INFO L125 PetriNetUnfolderBase]: For 11273/11273 co-relation queries the response was YES. [2024-01-31 16:55:55,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6866 conditions, 1088 events. 569/1088 cut-off events. For 11273/11273 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 6049 event pairs, 60 based on Foata normal form. 3/1081 useless extension candidates. Maximal degree in co-relation 6750. Up to 774 conditions per place. [2024-01-31 16:55:55,735 INFO L140 encePairwiseOnDemand]: 11/19 looper letters, 197 selfloop transitions, 89 changer transitions 21/308 dead transitions. [2024-01-31 16:55:55,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 308 transitions, 3727 flow [2024-01-31 16:55:55,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-01-31 16:55:55,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-01-31 16:55:55,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 207 transitions. [2024-01-31 16:55:55,736 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4357894736842105 [2024-01-31 16:55:55,736 INFO L175 Difference]: Start difference. First operand has 198 places, 215 transitions, 2209 flow. Second operand 25 states and 207 transitions. [2024-01-31 16:55:55,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 308 transitions, 3727 flow [2024-01-31 16:55:55,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 308 transitions, 3615 flow, removed 18 selfloop flow, removed 15 redundant places. [2024-01-31 16:55:55,770 INFO L231 Difference]: Finished difference. Result has 208 places, 244 transitions, 2852 flow [2024-01-31 16:55:55,771 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=19, PETRI_DIFFERENCE_MINUEND_FLOW=2105, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=2852, PETRI_PLACES=208, PETRI_TRANSITIONS=244} [2024-01-31 16:55:55,771 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 187 predicate places. [2024-01-31 16:55:55,771 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 244 transitions, 2852 flow [2024-01-31 16:55:55,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.842105263157895) internal successors, (92), 19 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:55:55,771 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:55:55,772 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:55:55,783 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-01-31 16:55:55,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:55:55,983 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 16:55:55,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:55:55,983 INFO L85 PathProgramCache]: Analyzing trace with hash 1438092632, now seen corresponding path program 13 times [2024-01-31 16:55:55,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:55:55,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316302798] [2024-01-31 16:55:55,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:55:55,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:55:55,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:55:56,293 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:55:56,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:55:56,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316302798] [2024-01-31 16:55:56,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316302798] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 16:55:56,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1001454095] [2024-01-31 16:55:56,293 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-01-31 16:55:56,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:55:56,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:55:56,294 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) [2024-01-31 16:55:56,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-01-31 16:55:56,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:55:56,370 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 21 conjunts are in the unsatisfiable core [2024-01-31 16:55:56,371 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 16:55:56,534 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:55:56,534 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 16:55:57,688 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:55:57,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1001454095] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 16:55:57,688 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 16:55:57,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2024-01-31 16:55:57,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499370412] [2024-01-31 16:55:57,689 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 16:55:57,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-01-31 16:55:57,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:55:57,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-01-31 16:55:57,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2024-01-31 16:55:57,689 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 19 [2024-01-31 16:55:57,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 244 transitions, 2852 flow. Second operand has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:55:57,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:55:57,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 19 [2024-01-31 16:55:57,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:55:58,570 INFO L124 PetriNetUnfolderBase]: 568/1080 cut-off events. [2024-01-31 16:55:58,571 INFO L125 PetriNetUnfolderBase]: For 13155/13155 co-relation queries the response was YES. [2024-01-31 16:55:58,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7220 conditions, 1080 events. 568/1080 cut-off events. For 13155/13155 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 5965 event pairs, 72 based on Foata normal form. 2/1074 useless extension candidates. Maximal degree in co-relation 7060. Up to 986 conditions per place. [2024-01-31 16:55:58,579 INFO L140 encePairwiseOnDemand]: 11/19 looper letters, 233 selfloop transitions, 39 changer transitions 7/280 dead transitions. [2024-01-31 16:55:58,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 280 transitions, 3759 flow [2024-01-31 16:55:58,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-01-31 16:55:58,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-01-31 16:55:58,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 122 transitions. [2024-01-31 16:55:58,580 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40131578947368424 [2024-01-31 16:55:58,580 INFO L175 Difference]: Start difference. First operand has 208 places, 244 transitions, 2852 flow. Second operand 16 states and 122 transitions. [2024-01-31 16:55:58,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 280 transitions, 3759 flow [2024-01-31 16:55:58,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 280 transitions, 3356 flow, removed 171 selfloop flow, removed 10 redundant places. [2024-01-31 16:55:58,622 INFO L231 Difference]: Finished difference. Result has 212 places, 252 transitions, 2786 flow [2024-01-31 16:55:58,622 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=19, PETRI_DIFFERENCE_MINUEND_FLOW=2449, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=2786, PETRI_PLACES=212, PETRI_TRANSITIONS=252} [2024-01-31 16:55:58,623 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 191 predicate places. [2024-01-31 16:55:58,623 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 252 transitions, 2786 flow [2024-01-31 16:55:58,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:55:58,623 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:55:58,623 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:55:58,635 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-01-31 16:55:58,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:55:58,835 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 16:55:58,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:55:58,835 INFO L85 PathProgramCache]: Analyzing trace with hash -708078128, now seen corresponding path program 14 times [2024-01-31 16:55:58,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:55:58,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224000667] [2024-01-31 16:55:58,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:55:58,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:55:58,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:55:59,206 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:55:59,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:55:59,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224000667] [2024-01-31 16:55:59,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224000667] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 16:55:59,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1143773222] [2024-01-31 16:55:59,206 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-01-31 16:55:59,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:55:59,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:55:59,217 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) [2024-01-31 16:55:59,218 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-01-31 16:55:59,295 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-01-31 16:55:59,295 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 16:55:59,296 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 21 conjunts are in the unsatisfiable core [2024-01-31 16:55:59,297 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 16:55:59,504 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:55:59,505 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 16:55:59,981 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:55:59,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1143773222] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 16:55:59,982 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 16:55:59,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2024-01-31 16:55:59,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713862428] [2024-01-31 16:55:59,982 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 16:55:59,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-01-31 16:55:59,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:55:59,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-01-31 16:55:59,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2024-01-31 16:55:59,983 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 19 [2024-01-31 16:55:59,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 252 transitions, 2786 flow. Second operand has 19 states, 19 states have (on average 4.842105263157895) internal successors, (92), 19 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:55:59,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:55:59,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 19 [2024-01-31 16:55:59,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:56:01,241 INFO L124 PetriNetUnfolderBase]: 584/1122 cut-off events. [2024-01-31 16:56:01,241 INFO L125 PetriNetUnfolderBase]: For 13332/13332 co-relation queries the response was YES. [2024-01-31 16:56:01,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7116 conditions, 1122 events. 584/1122 cut-off events. For 13332/13332 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 6330 event pairs, 62 based on Foata normal form. 3/1115 useless extension candidates. Maximal degree in co-relation 7009. Up to 887 conditions per place. [2024-01-31 16:56:01,248 INFO L140 encePairwiseOnDemand]: 11/19 looper letters, 222 selfloop transitions, 75 changer transitions 15/313 dead transitions. [2024-01-31 16:56:01,249 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 313 transitions, 3855 flow [2024-01-31 16:56:01,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-01-31 16:56:01,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-01-31 16:56:01,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 178 transitions. [2024-01-31 16:56:01,250 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4258373205741627 [2024-01-31 16:56:01,250 INFO L175 Difference]: Start difference. First operand has 212 places, 252 transitions, 2786 flow. Second operand 22 states and 178 transitions. [2024-01-31 16:56:01,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 313 transitions, 3855 flow [2024-01-31 16:56:01,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 313 transitions, 3643 flow, removed 88 selfloop flow, removed 9 redundant places. [2024-01-31 16:56:01,294 INFO L231 Difference]: Finished difference. Result has 232 places, 262 transitions, 2970 flow [2024-01-31 16:56:01,295 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=19, PETRI_DIFFERENCE_MINUEND_FLOW=2578, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2970, PETRI_PLACES=232, PETRI_TRANSITIONS=262} [2024-01-31 16:56:01,295 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 211 predicate places. [2024-01-31 16:56:01,295 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 262 transitions, 2970 flow [2024-01-31 16:56:01,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.842105263157895) internal successors, (92), 19 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:56:01,295 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:56:01,295 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:56:01,306 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-01-31 16:56:01,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-01-31 16:56:01,501 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 16:56:01,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:56:01,502 INFO L85 PathProgramCache]: Analyzing trace with hash 165662552, now seen corresponding path program 15 times [2024-01-31 16:56:01,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:56:01,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776734711] [2024-01-31 16:56:01,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:56:01,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:56:01,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:56:01,883 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:56:01,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:56:01,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776734711] [2024-01-31 16:56:01,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776734711] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 16:56:01,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1621135987] [2024-01-31 16:56:01,884 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-01-31 16:56:01,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:56:01,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:56:01,885 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) [2024-01-31 16:56:01,886 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-01-31 16:56:01,963 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-01-31 16:56:01,963 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 16:56:01,964 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 21 conjunts are in the unsatisfiable core [2024-01-31 16:56:01,965 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 16:56:02,236 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:56:02,237 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 16:56:02,646 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:56:02,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1621135987] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 16:56:02,647 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 16:56:02,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2024-01-31 16:56:02,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309098269] [2024-01-31 16:56:02,647 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 16:56:02,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-01-31 16:56:02,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:56:02,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-01-31 16:56:02,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2024-01-31 16:56:02,648 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 19 [2024-01-31 16:56:02,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 262 transitions, 2970 flow. Second operand has 19 states, 19 states have (on average 4.842105263157895) internal successors, (92), 19 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:56:02,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:56:02,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 19 [2024-01-31 16:56:02,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:56:04,039 INFO L124 PetriNetUnfolderBase]: 579/1111 cut-off events. [2024-01-31 16:56:04,039 INFO L125 PetriNetUnfolderBase]: For 14223/14223 co-relation queries the response was YES. [2024-01-31 16:56:04,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7226 conditions, 1111 events. 579/1111 cut-off events. For 14223/14223 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 6259 event pairs, 62 based on Foata normal form. 3/1102 useless extension candidates. Maximal degree in co-relation 7144. Up to 821 conditions per place. [2024-01-31 16:56:04,047 INFO L140 encePairwiseOnDemand]: 11/19 looper letters, 212 selfloop transitions, 98 changer transitions 14/325 dead transitions. [2024-01-31 16:56:04,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 325 transitions, 3982 flow [2024-01-31 16:56:04,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-01-31 16:56:04,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-01-31 16:56:04,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 211 transitions. [2024-01-31 16:56:04,049 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4271255060728745 [2024-01-31 16:56:04,049 INFO L175 Difference]: Start difference. First operand has 232 places, 262 transitions, 2970 flow. Second operand 26 states and 211 transitions. [2024-01-31 16:56:04,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 325 transitions, 3982 flow [2024-01-31 16:56:04,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 325 transitions, 3769 flow, removed 70 selfloop flow, removed 11 redundant places. [2024-01-31 16:56:04,104 INFO L231 Difference]: Finished difference. Result has 247 places, 268 transitions, 3177 flow [2024-01-31 16:56:04,104 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=19, PETRI_DIFFERENCE_MINUEND_FLOW=2754, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=3177, PETRI_PLACES=247, PETRI_TRANSITIONS=268} [2024-01-31 16:56:04,104 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 226 predicate places. [2024-01-31 16:56:04,105 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 268 transitions, 3177 flow [2024-01-31 16:56:04,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.842105263157895) internal successors, (92), 19 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:56:04,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:56:04,105 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:56:04,116 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-01-31 16:56:04,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-01-31 16:56:04,316 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 16:56:04,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:56:04,317 INFO L85 PathProgramCache]: Analyzing trace with hash -1279532934, now seen corresponding path program 16 times [2024-01-31 16:56:04,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:56:04,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018059015] [2024-01-31 16:56:04,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:56:04,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:56:04,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:56:04,598 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:56:04,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:56:04,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018059015] [2024-01-31 16:56:04,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018059015] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 16:56:04,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [272688909] [2024-01-31 16:56:04,598 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-01-31 16:56:04,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:56:04,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:56:04,609 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) [2024-01-31 16:56:04,632 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-01-31 16:56:04,684 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-01-31 16:56:04,684 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 16:56:04,685 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 21 conjunts are in the unsatisfiable core [2024-01-31 16:56:04,686 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 16:56:04,877 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:56:04,878 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 16:56:05,270 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:56:05,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [272688909] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 16:56:05,270 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 16:56:05,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2024-01-31 16:56:05,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956099520] [2024-01-31 16:56:05,271 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 16:56:05,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-01-31 16:56:05,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:56:05,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-01-31 16:56:05,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2024-01-31 16:56:05,272 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 19 [2024-01-31 16:56:05,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 268 transitions, 3177 flow. Second operand has 18 states, 18 states have (on average 4.944444444444445) internal successors, (89), 18 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:56:05,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:56:05,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 19 [2024-01-31 16:56:05,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:56:09,715 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 16:56:13,969 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 16:56:14,431 INFO L124 PetriNetUnfolderBase]: 580/1118 cut-off events. [2024-01-31 16:56:14,431 INFO L125 PetriNetUnfolderBase]: For 13946/13946 co-relation queries the response was YES. [2024-01-31 16:56:14,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7384 conditions, 1118 events. 580/1118 cut-off events. For 13946/13946 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 6316 event pairs, 58 based on Foata normal form. 3/1107 useless extension candidates. Maximal degree in co-relation 7301. Up to 898 conditions per place. [2024-01-31 16:56:14,438 INFO L140 encePairwiseOnDemand]: 11/19 looper letters, 236 selfloop transitions, 71 changer transitions 19/327 dead transitions. [2024-01-31 16:56:14,438 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 327 transitions, 4155 flow [2024-01-31 16:56:14,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-01-31 16:56:14,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-01-31 16:56:14,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 180 transitions. [2024-01-31 16:56:14,439 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41189931350114417 [2024-01-31 16:56:14,439 INFO L175 Difference]: Start difference. First operand has 247 places, 268 transitions, 3177 flow. Second operand 23 states and 180 transitions. [2024-01-31 16:56:14,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 327 transitions, 4155 flow [2024-01-31 16:56:14,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 327 transitions, 3718 flow, removed 134 selfloop flow, removed 26 redundant places. [2024-01-31 16:56:14,498 INFO L231 Difference]: Finished difference. Result has 249 places, 273 transitions, 3025 flow [2024-01-31 16:56:14,498 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=19, PETRI_DIFFERENCE_MINUEND_FLOW=2768, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=3025, PETRI_PLACES=249, PETRI_TRANSITIONS=273} [2024-01-31 16:56:14,498 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 228 predicate places. [2024-01-31 16:56:14,499 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 273 transitions, 3025 flow [2024-01-31 16:56:14,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.944444444444445) internal successors, (89), 18 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:56:14,499 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:56:14,499 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:56:14,510 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-01-31 16:56:14,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:56:14,710 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 16:56:14,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:56:14,710 INFO L85 PathProgramCache]: Analyzing trace with hash -126262128, now seen corresponding path program 17 times [2024-01-31 16:56:14,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:56:14,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914881500] [2024-01-31 16:56:14,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:56:14,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:56:14,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:56:15,053 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:56:15,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:56:15,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914881500] [2024-01-31 16:56:15,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914881500] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 16:56:15,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1704411362] [2024-01-31 16:56:15,053 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-01-31 16:56:15,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:56:15,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:56:15,054 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) [2024-01-31 16:56:15,056 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-01-31 16:56:15,116 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-01-31 16:56:15,116 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 16:56:15,117 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 21 conjunts are in the unsatisfiable core [2024-01-31 16:56:15,118 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 16:56:15,287 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:56:15,287 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 16:56:16,297 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:56:16,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1704411362] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 16:56:16,298 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 16:56:16,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2024-01-31 16:56:16,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847858374] [2024-01-31 16:56:16,298 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 16:56:16,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-01-31 16:56:16,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:56:16,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-01-31 16:56:16,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2024-01-31 16:56:16,300 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 19 [2024-01-31 16:56:16,300 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 273 transitions, 3025 flow. Second operand has 18 states, 18 states have (on average 4.944444444444445) internal successors, (89), 18 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:56:16,300 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:56:16,300 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 19 [2024-01-31 16:56:16,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:56:17,131 INFO L124 PetriNetUnfolderBase]: 607/1165 cut-off events. [2024-01-31 16:56:17,131 INFO L125 PetriNetUnfolderBase]: For 11436/11436 co-relation queries the response was YES. [2024-01-31 16:56:17,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7596 conditions, 1165 events. 607/1165 cut-off events. For 11436/11436 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 6612 event pairs, 64 based on Foata normal form. 2/1147 useless extension candidates. Maximal degree in co-relation 7514. Up to 1001 conditions per place. [2024-01-31 16:56:17,140 INFO L140 encePairwiseOnDemand]: 11/19 looper letters, 249 selfloop transitions, 58 changer transitions 10/318 dead transitions. [2024-01-31 16:56:17,140 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 318 transitions, 4115 flow [2024-01-31 16:56:17,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-01-31 16:56:17,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-01-31 16:56:17,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 133 transitions. [2024-01-31 16:56:17,141 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4117647058823529 [2024-01-31 16:56:17,141 INFO L175 Difference]: Start difference. First operand has 249 places, 273 transitions, 3025 flow. Second operand 17 states and 133 transitions. [2024-01-31 16:56:17,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 318 transitions, 4115 flow [2024-01-31 16:56:17,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 318 transitions, 3997 flow, removed 30 selfloop flow, removed 15 redundant places. [2024-01-31 16:56:17,185 INFO L231 Difference]: Finished difference. Result has 252 places, 283 transitions, 3344 flow [2024-01-31 16:56:17,186 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=19, PETRI_DIFFERENCE_MINUEND_FLOW=2909, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=3344, PETRI_PLACES=252, PETRI_TRANSITIONS=283} [2024-01-31 16:56:17,186 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 231 predicate places. [2024-01-31 16:56:17,186 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 283 transitions, 3344 flow [2024-01-31 16:56:17,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.944444444444445) internal successors, (89), 18 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:56:17,187 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:56:17,187 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:56:17,198 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-01-31 16:56:17,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:56:17,398 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 16:56:17,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:56:17,399 INFO L85 PathProgramCache]: Analyzing trace with hash 1919404264, now seen corresponding path program 18 times [2024-01-31 16:56:17,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:56:17,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713734208] [2024-01-31 16:56:17,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:56:17,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:56:17,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:56:17,727 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:56:17,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:56:17,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713734208] [2024-01-31 16:56:17,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713734208] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 16:56:17,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [160659351] [2024-01-31 16:56:17,727 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-01-31 16:56:17,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:56:17,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:56:17,728 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) [2024-01-31 16:56:17,730 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-01-31 16:56:17,800 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-01-31 16:56:17,800 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 16:56:17,801 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 21 conjunts are in the unsatisfiable core [2024-01-31 16:56:17,802 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 16:56:17,972 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:56:17,972 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 16:56:18,790 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:56:18,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [160659351] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 16:56:18,791 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 16:56:18,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2024-01-31 16:56:18,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442187581] [2024-01-31 16:56:18,792 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 16:56:18,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-01-31 16:56:18,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:56:18,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-01-31 16:56:18,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2024-01-31 16:56:18,793 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 19 [2024-01-31 16:56:18,794 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 283 transitions, 3344 flow. Second operand has 18 states, 18 states have (on average 5.0) internal successors, (90), 18 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:56:18,794 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:56:18,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 19 [2024-01-31 16:56:18,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:56:19,912 INFO L124 PetriNetUnfolderBase]: 606/1168 cut-off events. [2024-01-31 16:56:19,913 INFO L125 PetriNetUnfolderBase]: For 11998/11998 co-relation queries the response was YES. [2024-01-31 16:56:19,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7754 conditions, 1168 events. 606/1168 cut-off events. For 11998/11998 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 6684 event pairs, 60 based on Foata normal form. 2/1152 useless extension candidates. Maximal degree in co-relation 7634. Up to 989 conditions per place. [2024-01-31 16:56:19,922 INFO L140 encePairwiseOnDemand]: 10/19 looper letters, 263 selfloop transitions, 57 changer transitions 10/331 dead transitions. [2024-01-31 16:56:19,922 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 331 transitions, 4241 flow [2024-01-31 16:56:19,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-01-31 16:56:19,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-01-31 16:56:19,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 173 transitions. [2024-01-31 16:56:19,924 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4138755980861244 [2024-01-31 16:56:19,924 INFO L175 Difference]: Start difference. First operand has 252 places, 283 transitions, 3344 flow. Second operand 22 states and 173 transitions. [2024-01-31 16:56:19,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 331 transitions, 4241 flow [2024-01-31 16:56:19,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 331 transitions, 4005 flow, removed 94 selfloop flow, removed 10 redundant places. [2024-01-31 16:56:19,976 INFO L231 Difference]: Finished difference. Result has 264 places, 286 transitions, 3337 flow [2024-01-31 16:56:19,977 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=19, PETRI_DIFFERENCE_MINUEND_FLOW=3108, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=3337, PETRI_PLACES=264, PETRI_TRANSITIONS=286} [2024-01-31 16:56:19,977 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 243 predicate places. [2024-01-31 16:56:19,977 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 286 transitions, 3337 flow [2024-01-31 16:56:19,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.0) internal successors, (90), 18 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:56:19,977 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:56:19,977 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:56:19,988 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-01-31 16:56:20,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-01-31 16:56:20,189 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 16:56:20,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:56:20,189 INFO L85 PathProgramCache]: Analyzing trace with hash -1983133984, now seen corresponding path program 19 times [2024-01-31 16:56:20,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:56:20,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373851673] [2024-01-31 16:56:20,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:56:20,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:56:20,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:56:20,509 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:56:20,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:56:20,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373851673] [2024-01-31 16:56:20,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373851673] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 16:56:20,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1054562673] [2024-01-31 16:56:20,510 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-01-31 16:56:20,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:56:20,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:56:20,511 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) [2024-01-31 16:56:20,513 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-01-31 16:56:20,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:56:20,579 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 21 conjunts are in the unsatisfiable core [2024-01-31 16:56:20,579 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 16:56:20,755 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:56:20,755 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 16:56:21,769 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:56:21,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1054562673] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 16:56:21,769 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 16:56:21,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2024-01-31 16:56:21,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020375735] [2024-01-31 16:56:21,769 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 16:56:21,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-01-31 16:56:21,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:56:21,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-01-31 16:56:21,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2024-01-31 16:56:21,770 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 19 [2024-01-31 16:56:21,771 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 286 transitions, 3337 flow. Second operand has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:56:21,771 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:56:21,771 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 19 [2024-01-31 16:56:21,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:56:22,651 INFO L124 PetriNetUnfolderBase]: 597/1161 cut-off events. [2024-01-31 16:56:22,651 INFO L125 PetriNetUnfolderBase]: For 10715/10715 co-relation queries the response was YES. [2024-01-31 16:56:22,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7583 conditions, 1161 events. 597/1161 cut-off events. For 10715/10715 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 6664 event pairs, 68 based on Foata normal form. 2/1143 useless extension candidates. Maximal degree in co-relation 7495. Up to 1002 conditions per place. [2024-01-31 16:56:22,662 INFO L140 encePairwiseOnDemand]: 11/19 looper letters, 255 selfloop transitions, 59 changer transitions 8/323 dead transitions. [2024-01-31 16:56:22,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 323 transitions, 4205 flow [2024-01-31 16:56:22,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-01-31 16:56:22,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-01-31 16:56:22,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 142 transitions. [2024-01-31 16:56:22,667 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4152046783625731 [2024-01-31 16:56:22,668 INFO L175 Difference]: Start difference. First operand has 264 places, 286 transitions, 3337 flow. Second operand 18 states and 142 transitions. [2024-01-31 16:56:22,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 323 transitions, 4205 flow [2024-01-31 16:56:22,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 323 transitions, 3974 flow, removed 79 selfloop flow, removed 19 redundant places. [2024-01-31 16:56:22,721 INFO L231 Difference]: Finished difference. Result has 264 places, 289 transitions, 3331 flow [2024-01-31 16:56:22,721 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=19, PETRI_DIFFERENCE_MINUEND_FLOW=3106, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=3331, PETRI_PLACES=264, PETRI_TRANSITIONS=289} [2024-01-31 16:56:22,722 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 243 predicate places. [2024-01-31 16:56:22,722 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 289 transitions, 3331 flow [2024-01-31 16:56:22,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:56:22,722 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:56:22,722 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:56:22,734 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-01-31 16:56:22,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-01-31 16:56:22,934 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 16:56:22,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:56:22,935 INFO L85 PathProgramCache]: Analyzing trace with hash 401833575, now seen corresponding path program 20 times [2024-01-31 16:56:22,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:56:22,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709539265] [2024-01-31 16:56:22,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:56:22,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:56:22,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:56:23,345 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:56:23,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:56:23,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709539265] [2024-01-31 16:56:23,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709539265] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 16:56:23,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2109017932] [2024-01-31 16:56:23,345 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-01-31 16:56:23,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:56:23,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:56:23,346 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) [2024-01-31 16:56:23,347 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-01-31 16:56:23,425 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-01-31 16:56:23,425 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 16:56:23,426 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 25 conjunts are in the unsatisfiable core [2024-01-31 16:56:23,427 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 16:56:23,691 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:56:23,691 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 16:56:28,676 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:56:28,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2109017932] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 16:56:28,677 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 16:56:28,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 20 [2024-01-31 16:56:28,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514447036] [2024-01-31 16:56:28,677 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 16:56:28,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-01-31 16:56:28,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:56:28,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-01-31 16:56:28,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=336, Unknown=1, NotChecked=0, Total=420 [2024-01-31 16:56:28,678 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 19 [2024-01-31 16:56:28,678 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 289 transitions, 3331 flow. Second operand has 21 states, 21 states have (on average 4.857142857142857) internal successors, (102), 21 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:56:28,678 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:56:28,678 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 19 [2024-01-31 16:56:28,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:56:33,124 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 16:56:37,885 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 16:56:42,263 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 16:56:46,651 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 16:56:50,711 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 16:56:51,149 INFO L124 PetriNetUnfolderBase]: 719/1382 cut-off events. [2024-01-31 16:56:51,149 INFO L125 PetriNetUnfolderBase]: For 18986/18986 co-relation queries the response was YES. [2024-01-31 16:56:51,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9681 conditions, 1382 events. 719/1382 cut-off events. For 18986/18986 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 8198 event pairs, 41 based on Foata normal form. 4/1366 useless extension candidates. Maximal degree in co-relation 9591. Up to 936 conditions per place. [2024-01-31 16:56:51,158 INFO L140 encePairwiseOnDemand]: 11/19 looper letters, 281 selfloop transitions, 109 changer transitions 27/418 dead transitions. [2024-01-31 16:56:51,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 418 transitions, 5446 flow [2024-01-31 16:56:51,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-01-31 16:56:51,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2024-01-31 16:56:51,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 278 transitions. [2024-01-31 16:56:51,160 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4433811802232855 [2024-01-31 16:56:51,160 INFO L175 Difference]: Start difference. First operand has 264 places, 289 transitions, 3331 flow. Second operand 33 states and 278 transitions. [2024-01-31 16:56:51,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 418 transitions, 5446 flow [2024-01-31 16:56:51,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 418 transitions, 5241 flow, removed 70 selfloop flow, removed 14 redundant places. [2024-01-31 16:56:51,221 INFO L231 Difference]: Finished difference. Result has 292 places, 325 transitions, 4211 flow [2024-01-31 16:56:51,221 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=19, PETRI_DIFFERENCE_MINUEND_FLOW=3138, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=4211, PETRI_PLACES=292, PETRI_TRANSITIONS=325} [2024-01-31 16:56:51,221 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 271 predicate places. [2024-01-31 16:56:51,221 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 325 transitions, 4211 flow [2024-01-31 16:56:51,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.857142857142857) internal successors, (102), 21 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:56:51,222 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:56:51,222 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:56:51,249 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-01-31 16:56:51,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-01-31 16:56:51,433 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 16:56:51,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:56:51,434 INFO L85 PathProgramCache]: Analyzing trace with hash 935864290, now seen corresponding path program 5 times [2024-01-31 16:56:51,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:56:51,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678087822] [2024-01-31 16:56:51,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:56:51,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:56:51,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:56:51,573 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:56:51,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:56:51,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678087822] [2024-01-31 16:56:51,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678087822] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 16:56:51,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [847273537] [2024-01-31 16:56:51,573 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-01-31 16:56:51,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:56:51,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:56:51,576 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) [2024-01-31 16:56:51,577 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-01-31 16:56:51,669 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-01-31 16:56:51,670 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 16:56:51,671 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 16 conjunts are in the unsatisfiable core [2024-01-31 16:56:51,672 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 16:56:51,799 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:56:51,799 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 16:56:51,962 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-31 16:56:51,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [847273537] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 16:56:51,962 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 16:56:51,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 5] total 13 [2024-01-31 16:56:51,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306716185] [2024-01-31 16:56:51,962 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 16:56:51,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-01-31 16:56:51,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:56:51,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-01-31 16:56:51,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-01-31 16:56:51,963 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 19 [2024-01-31 16:56:51,963 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 325 transitions, 4211 flow. Second operand has 14 states, 14 states have (on average 5.785714285714286) internal successors, (81), 14 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:56:51,963 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:56:51,963 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 19 [2024-01-31 16:56:51,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:56:52,731 INFO L124 PetriNetUnfolderBase]: 704/1368 cut-off events. [2024-01-31 16:56:52,736 INFO L125 PetriNetUnfolderBase]: For 19828/19828 co-relation queries the response was YES. [2024-01-31 16:56:52,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10014 conditions, 1368 events. 704/1368 cut-off events. For 19828/19828 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 8178 event pairs, 36 based on Foata normal form. 5/1353 useless extension candidates. Maximal degree in co-relation 9912. Up to 1074 conditions per place. [2024-01-31 16:56:52,749 INFO L140 encePairwiseOnDemand]: 13/19 looper letters, 284 selfloop transitions, 70 changer transitions 25/380 dead transitions. [2024-01-31 16:56:52,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 380 transitions, 5557 flow [2024-01-31 16:56:52,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-01-31 16:56:52,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-01-31 16:56:52,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 149 transitions. [2024-01-31 16:56:52,751 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4613003095975232 [2024-01-31 16:56:52,752 INFO L175 Difference]: Start difference. First operand has 292 places, 325 transitions, 4211 flow. Second operand 17 states and 149 transitions. [2024-01-31 16:56:52,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 380 transitions, 5557 flow [2024-01-31 16:56:52,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 380 transitions, 4847 flow, removed 331 selfloop flow, removed 13 redundant places. [2024-01-31 16:56:52,837 INFO L231 Difference]: Finished difference. Result has 294 places, 323 transitions, 3781 flow [2024-01-31 16:56:52,838 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=19, PETRI_DIFFERENCE_MINUEND_FLOW=3591, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=3781, PETRI_PLACES=294, PETRI_TRANSITIONS=323} [2024-01-31 16:56:52,842 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 273 predicate places. [2024-01-31 16:56:52,843 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 323 transitions, 3781 flow [2024-01-31 16:56:52,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.785714285714286) internal successors, (81), 14 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:56:52,843 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:56:52,850 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:56:52,863 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2024-01-31 16:56:53,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-01-31 16:56:53,061 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 16:56:53,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:56:53,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1270456160, now seen corresponding path program 6 times [2024-01-31 16:56:53,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:56:53,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707325597] [2024-01-31 16:56:53,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:56:53,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:56:53,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:56:53,233 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:56:53,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:56:53,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707325597] [2024-01-31 16:56:53,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707325597] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 16:56:53,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [182654995] [2024-01-31 16:56:53,234 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-01-31 16:56:53,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:56:53,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:56:53,238 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) [2024-01-31 16:56:53,239 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-01-31 16:56:53,306 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-01-31 16:56:53,307 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 16:56:53,308 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 14 conjunts are in the unsatisfiable core [2024-01-31 16:56:53,308 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 16:56:53,798 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:56:53,798 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 16:56:53,936 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-31 16:56:53,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [182654995] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 16:56:53,937 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 16:56:53,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 14 [2024-01-31 16:56:53,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84007666] [2024-01-31 16:56:53,937 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 16:56:53,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-01-31 16:56:53,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:56:53,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-01-31 16:56:53,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2024-01-31 16:56:53,938 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 19 [2024-01-31 16:56:53,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 323 transitions, 3781 flow. Second operand has 15 states, 15 states have (on average 5.6) internal successors, (84), 15 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:56:53,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:56:53,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 19 [2024-01-31 16:56:53,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:56:55,089 INFO L124 PetriNetUnfolderBase]: 719/1397 cut-off events. [2024-01-31 16:56:55,089 INFO L125 PetriNetUnfolderBase]: For 18108/18108 co-relation queries the response was YES. [2024-01-31 16:56:55,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9579 conditions, 1397 events. 719/1397 cut-off events. For 18108/18108 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 8389 event pairs, 48 based on Foata normal form. 6/1377 useless extension candidates. Maximal degree in co-relation 9460. Up to 1027 conditions per place. [2024-01-31 16:56:55,100 INFO L140 encePairwiseOnDemand]: 13/19 looper letters, 280 selfloop transitions, 48 changer transitions 50/379 dead transitions. [2024-01-31 16:56:55,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 379 transitions, 5183 flow [2024-01-31 16:56:55,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-01-31 16:56:55,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-01-31 16:56:55,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 130 transitions. [2024-01-31 16:56:55,101 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45614035087719296 [2024-01-31 16:56:55,101 INFO L175 Difference]: Start difference. First operand has 294 places, 323 transitions, 3781 flow. Second operand 15 states and 130 transitions. [2024-01-31 16:56:55,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 379 transitions, 5183 flow [2024-01-31 16:56:55,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 379 transitions, 5017 flow, removed 32 selfloop flow, removed 14 redundant places. [2024-01-31 16:56:55,174 INFO L231 Difference]: Finished difference. Result has 295 places, 302 transitions, 3534 flow [2024-01-31 16:56:55,175 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=19, PETRI_DIFFERENCE_MINUEND_FLOW=3637, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=3534, PETRI_PLACES=295, PETRI_TRANSITIONS=302} [2024-01-31 16:56:55,176 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 274 predicate places. [2024-01-31 16:56:55,176 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 302 transitions, 3534 flow [2024-01-31 16:56:55,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.6) internal successors, (84), 15 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:56:55,177 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:56:55,177 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:56:55,187 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2024-01-31 16:56:55,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-01-31 16:56:55,388 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 16:56:55,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:56:55,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1071048199, now seen corresponding path program 21 times [2024-01-31 16:56:55,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:56:55,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303539759] [2024-01-31 16:56:55,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:56:55,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:56:55,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:56:55,809 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:56:55,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:56:55,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303539759] [2024-01-31 16:56:55,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303539759] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 16:56:55,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1922692683] [2024-01-31 16:56:55,809 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-01-31 16:56:55,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:56:55,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:56:55,824 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) [2024-01-31 16:56:55,852 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-01-31 16:56:55,938 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-01-31 16:56:55,939 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 16:56:55,940 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 25 conjunts are in the unsatisfiable core [2024-01-31 16:56:55,941 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 16:57:00,164 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:57:00,164 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 16:57:00,859 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:57:00,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1922692683] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 16:57:00,859 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 16:57:00,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2024-01-31 16:57:00,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990512261] [2024-01-31 16:57:00,859 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 16:57:00,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-01-31 16:57:00,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:57:00,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-01-31 16:57:00,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=304, Unknown=1, NotChecked=0, Total=380 [2024-01-31 16:57:00,860 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 19 [2024-01-31 16:57:00,860 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 302 transitions, 3534 flow. Second operand has 20 states, 20 states have (on average 4.85) internal successors, (97), 20 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:57:00,860 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:57:00,860 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 19 [2024-01-31 16:57:00,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:57:05,086 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 16:57:10,681 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 16:57:19,144 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 16:57:23,192 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 16:57:24,100 INFO L124 PetriNetUnfolderBase]: 695/1326 cut-off events. [2024-01-31 16:57:24,100 INFO L125 PetriNetUnfolderBase]: For 16625/16625 co-relation queries the response was YES. [2024-01-31 16:57:24,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9182 conditions, 1326 events. 695/1326 cut-off events. For 16625/16625 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 7732 event pairs, 63 based on Foata normal form. 3/1307 useless extension candidates. Maximal degree in co-relation 9062. Up to 1101 conditions per place. [2024-01-31 16:57:24,109 INFO L140 encePairwiseOnDemand]: 11/19 looper letters, 281 selfloop transitions, 78 changer transitions 15/375 dead transitions. [2024-01-31 16:57:24,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 375 transitions, 4865 flow [2024-01-31 16:57:24,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-01-31 16:57:24,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-01-31 16:57:24,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 191 transitions. [2024-01-31 16:57:24,118 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41885964912280704 [2024-01-31 16:57:24,118 INFO L175 Difference]: Start difference. First operand has 295 places, 302 transitions, 3534 flow. Second operand 24 states and 191 transitions. [2024-01-31 16:57:24,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 375 transitions, 4865 flow [2024-01-31 16:57:24,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 375 transitions, 4673 flow, removed 71 selfloop flow, removed 15 redundant places. [2024-01-31 16:57:24,209 INFO L231 Difference]: Finished difference. Result has 296 places, 320 transitions, 3961 flow [2024-01-31 16:57:24,209 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=19, PETRI_DIFFERENCE_MINUEND_FLOW=3392, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=3961, PETRI_PLACES=296, PETRI_TRANSITIONS=320} [2024-01-31 16:57:24,210 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 275 predicate places. [2024-01-31 16:57:24,210 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 320 transitions, 3961 flow [2024-01-31 16:57:24,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.85) internal successors, (97), 20 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:57:24,210 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:57:24,211 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:57:24,221 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-01-31 16:57:24,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:57:24,422 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 16:57:24,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:57:24,422 INFO L85 PathProgramCache]: Analyzing trace with hash -1264617183, now seen corresponding path program 22 times [2024-01-31 16:57:24,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:57:24,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539386919] [2024-01-31 16:57:24,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:57:24,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:57:24,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:57:24,958 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:57:24,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:57:24,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539386919] [2024-01-31 16:57:24,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539386919] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 16:57:24,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [223373408] [2024-01-31 16:57:24,958 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-01-31 16:57:24,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:57:24,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:57:24,959 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) [2024-01-31 16:57:24,960 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-01-31 16:57:25,062 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-01-31 16:57:25,062 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 16:57:25,063 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 25 conjunts are in the unsatisfiable core [2024-01-31 16:57:25,064 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 16:57:25,256 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:57:25,256 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 16:57:26,232 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:57:26,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [223373408] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 16:57:26,232 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 16:57:26,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2024-01-31 16:57:26,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466164532] [2024-01-31 16:57:26,232 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 16:57:26,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-01-31 16:57:26,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:57:26,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-01-31 16:57:26,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2024-01-31 16:57:26,233 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 19 [2024-01-31 16:57:26,233 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 320 transitions, 3961 flow. Second operand has 20 states, 20 states have (on average 4.8) internal successors, (96), 20 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:57:26,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:57:26,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 19 [2024-01-31 16:57:26,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:57:30,508 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 16:57:35,113 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 16:57:39,123 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 16:57:43,498 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 16:57:47,692 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 16:57:48,187 INFO L124 PetriNetUnfolderBase]: 691/1323 cut-off events. [2024-01-31 16:57:48,187 INFO L125 PetriNetUnfolderBase]: For 16609/16609 co-relation queries the response was YES. [2024-01-31 16:57:48,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9290 conditions, 1323 events. 691/1323 cut-off events. For 16609/16609 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 7741 event pairs, 80 based on Foata normal form. 2/1303 useless extension candidates. Maximal degree in co-relation 9188. Up to 1166 conditions per place. [2024-01-31 16:57:48,196 INFO L140 encePairwiseOnDemand]: 11/19 looper letters, 272 selfloop transitions, 83 changer transitions 7/363 dead transitions. [2024-01-31 16:57:48,196 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 363 transitions, 4935 flow [2024-01-31 16:57:48,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-01-31 16:57:48,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-01-31 16:57:48,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 189 transitions. [2024-01-31 16:57:48,197 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39789473684210525 [2024-01-31 16:57:48,198 INFO L175 Difference]: Start difference. First operand has 296 places, 320 transitions, 3961 flow. Second operand 25 states and 189 transitions. [2024-01-31 16:57:48,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 363 transitions, 4935 flow [2024-01-31 16:57:48,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 363 transitions, 4712 flow, removed 68 selfloop flow, removed 18 redundant places. [2024-01-31 16:57:48,267 INFO L231 Difference]: Finished difference. Result has 304 places, 323 transitions, 4019 flow [2024-01-31 16:57:48,268 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=19, PETRI_DIFFERENCE_MINUEND_FLOW=3742, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=4019, PETRI_PLACES=304, PETRI_TRANSITIONS=323} [2024-01-31 16:57:48,268 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 283 predicate places. [2024-01-31 16:57:48,268 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 323 transitions, 4019 flow [2024-01-31 16:57:48,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.8) internal successors, (96), 20 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:57:48,268 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:57:48,269 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:57:48,281 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2024-01-31 16:57:48,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2024-01-31 16:57:48,480 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 16:57:48,480 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:57:48,480 INFO L85 PathProgramCache]: Analyzing trace with hash 1088642148, now seen corresponding path program 23 times [2024-01-31 16:57:48,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:57:48,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426672641] [2024-01-31 16:57:48,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:57:48,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:57:48,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:57:49,064 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:57:49,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:57:49,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426672641] [2024-01-31 16:57:49,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426672641] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 16:57:49,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1626271708] [2024-01-31 16:57:49,065 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-01-31 16:57:49,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:57:49,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:57:49,066 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) [2024-01-31 16:57:49,066 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-01-31 16:57:49,161 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-01-31 16:57:49,161 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 16:57:49,162 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 25 conjunts are in the unsatisfiable core [2024-01-31 16:57:49,163 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 16:57:49,489 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:57:49,489 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 16:57:54,355 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:57:54,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1626271708] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 16:57:54,355 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 16:57:54,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 21 [2024-01-31 16:57:54,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359927063] [2024-01-31 16:57:54,355 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 16:57:54,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-01-31 16:57:54,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:57:54,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-01-31 16:57:54,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462 [2024-01-31 16:57:54,356 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 19 [2024-01-31 16:57:54,356 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 323 transitions, 4019 flow. Second operand has 22 states, 22 states have (on average 4.818181818181818) internal successors, (106), 22 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:57:54,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:57:54,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 19 [2024-01-31 16:57:54,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:57:57,115 INFO L124 PetriNetUnfolderBase]: 707/1351 cut-off events. [2024-01-31 16:57:57,116 INFO L125 PetriNetUnfolderBase]: For 16503/16503 co-relation queries the response was YES. [2024-01-31 16:57:57,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9570 conditions, 1351 events. 707/1351 cut-off events. For 16503/16503 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 8029 event pairs, 36 based on Foata normal form. 4/1329 useless extension candidates. Maximal degree in co-relation 9456. Up to 991 conditions per place. [2024-01-31 16:57:57,127 INFO L140 encePairwiseOnDemand]: 11/19 looper letters, 269 selfloop transitions, 113 changer transitions 16/399 dead transitions. [2024-01-31 16:57:57,127 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 399 transitions, 5219 flow [2024-01-31 16:57:57,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-01-31 16:57:57,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-01-31 16:57:57,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 226 transitions. [2024-01-31 16:57:57,128 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.424812030075188 [2024-01-31 16:57:57,128 INFO L175 Difference]: Start difference. First operand has 304 places, 323 transitions, 4019 flow. Second operand 28 states and 226 transitions. [2024-01-31 16:57:57,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 399 transitions, 5219 flow [2024-01-31 16:57:57,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 399 transitions, 5050 flow, removed 38 selfloop flow, removed 20 redundant places. [2024-01-31 16:57:57,210 INFO L231 Difference]: Finished difference. Result has 313 places, 327 transitions, 4214 flow [2024-01-31 16:57:57,210 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=19, PETRI_DIFFERENCE_MINUEND_FLOW=3845, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=4214, PETRI_PLACES=313, PETRI_TRANSITIONS=327} [2024-01-31 16:57:57,211 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 292 predicate places. [2024-01-31 16:57:57,212 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 327 transitions, 4214 flow [2024-01-31 16:57:57,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 4.818181818181818) internal successors, (106), 22 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:57:57,212 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:57:57,212 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:57:57,224 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2024-01-31 16:57:57,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:57:57,424 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 16:57:57,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:57:57,425 INFO L85 PathProgramCache]: Analyzing trace with hash 83570261, now seen corresponding path program 3 times [2024-01-31 16:57:57,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:57:57,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198018080] [2024-01-31 16:57:57,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:57:57,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:57:57,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:57:57,591 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:57:57,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:57:57,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198018080] [2024-01-31 16:57:57,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198018080] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 16:57:57,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1320904954] [2024-01-31 16:57:57,592 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-01-31 16:57:57,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:57:57,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:57:57,601 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) [2024-01-31 16:57:57,622 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-01-31 16:57:57,682 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-01-31 16:57:57,682 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 16:57:57,683 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 14 conjunts are in the unsatisfiable core [2024-01-31 16:57:57,683 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 16:58:05,830 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:58:05,830 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 16:58:14,205 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse6 (mod c_~x_1~0 4294967296))) (let ((.cse0 (mod c_thread1Thread1of1ForFork0_~i~0 4294967296)) (.cse2 (+ .cse6 4294967296)) (.cse4 (mod c_~x_2~0 4294967296))) (and (forall ((v_z_312 Int) (v_y_312 Int)) (let ((.cse1 (+ (* 2863311531 v_z_312) (* v_y_312 4294967296))) (.cse3 (+ .cse4 v_z_312))) (or (< .cse0 .cse1) (< .cse1 0) (< 4294967295 v_z_312) (= .cse2 .cse3) (< .cse3 4294967296)))) (forall ((v_z_312 Int) (v_y_312 Int)) (let ((.cse5 (+ (* 2863311531 v_z_312) (* v_y_312 4294967296))) (.cse7 (+ .cse4 v_z_312))) (or (< .cse0 .cse5) (= .cse6 .cse7) (< .cse5 0) (< 4294967295 .cse7) (< v_z_312 0)))) (forall ((v_z_312 Int) (v_y_312 Int)) (let ((.cse8 (+ (* 2863311531 v_z_312) (* v_y_312 4294967296))) (.cse9 (+ .cse4 v_z_312))) (or (< .cse0 .cse8) (= .cse6 .cse9) (< .cse8 0) (< 4294967295 v_z_312) (= .cse2 .cse9) (< v_z_312 0))))))) is different from false [2024-01-31 16:58:34,325 WARN L293 SmtUtils]: Spent 16.03s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-01-31 16:58:54,659 WARN L293 SmtUtils]: Spent 8.25s on a formula simplification that was a NOOP. DAG size: 8 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-01-31 16:59:06,770 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (mod c_~x_1~0 4294967296))) (let ((.cse2 (+ .cse0 4294967296)) (.cse3 (mod c_~x_2~0 4294967296))) (and (forall ((v_z_312 Int) (v_y_312 Int)) (let ((.cse1 (+ .cse3 v_z_312))) (or (= .cse0 .cse1) (< 4294967295 v_z_312) (not (= (+ (* 2863311531 v_z_312) (* v_y_312 4294967296)) 0)) (= .cse2 .cse1) (< v_z_312 0)))) (forall ((v_z_312 Int) (v_y_312 Int)) (let ((.cse4 (+ .cse3 v_z_312))) (or (= .cse0 .cse4) (< 4294967295 .cse4) (not (= (+ (* 2863311531 v_z_312) (* v_y_312 4294967296)) 0)) (< v_z_312 0)))) (forall ((v_z_312 Int) (v_y_312 Int)) (let ((.cse5 (+ .cse3 v_z_312))) (or (< 4294967295 v_z_312) (not (= (+ (* 2863311531 v_z_312) (* v_y_312 4294967296)) 0)) (= .cse2 .cse5) (< .cse5 4294967296))))))) is different from false [2024-01-31 16:59:26,836 WARN L293 SmtUtils]: Spent 16.03s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-01-31 16:59:50,905 WARN L293 SmtUtils]: Spent 12.03s on a formula simplification that was a NOOP. DAG size: 8 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-01-31 17:00:18,973 WARN L293 SmtUtils]: Spent 16.02s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-01-31 17:00:43,046 WARN L293 SmtUtils]: Spent 12.03s on a formula simplification that was a NOOP. DAG size: 8 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-01-31 17:01:11,142 WARN L293 SmtUtils]: Spent 16.05s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-01-31 17:01:51,282 WARN L293 SmtUtils]: Spent 16.03s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-01-31 17:02:15,437 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2024-01-31 17:02:15,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1320904954] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 17:02:15,437 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 17:02:15,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2024-01-31 17:02:15,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347061024] [2024-01-31 17:02:15,438 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 17:02:15,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-01-31 17:02:15,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:02:15,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-01-31 17:02:15,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=157, Unknown=4, NotChecked=54, Total=272 [2024-01-31 17:02:15,438 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 19 [2024-01-31 17:02:15,438 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 327 transitions, 4214 flow. Second operand has 17 states, 17 states have (on average 5.352941176470588) internal successors, (91), 17 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:02:15,439 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:02:15,439 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 19 [2024-01-31 17:02:15,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:02:19,479 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (mod c_~x_1~0 4294967296))) (let ((.cse2 (+ .cse0 4294967296)) (.cse3 (mod c_~x_2~0 4294967296))) (and (forall ((v_z_312 Int) (v_y_312 Int)) (let ((.cse1 (+ .cse3 v_z_312))) (or (= .cse0 .cse1) (< 4294967295 v_z_312) (not (= (+ (* 2863311531 v_z_312) (* v_y_312 4294967296)) 0)) (= .cse2 .cse1) (< v_z_312 0)))) (= c_~x_2~0 0) (forall ((v_z_312 Int) (v_y_312 Int)) (let ((.cse4 (+ .cse3 v_z_312))) (or (= .cse0 .cse4) (< 4294967295 .cse4) (not (= (+ (* 2863311531 v_z_312) (* v_y_312 4294967296)) 0)) (< v_z_312 0)))) (forall ((v_z_312 Int) (v_y_312 Int)) (let ((.cse5 (+ .cse3 v_z_312))) (or (< 4294967295 v_z_312) (not (= (+ (* 2863311531 v_z_312) (* v_y_312 4294967296)) 0)) (= .cse2 .cse5) (< .cse5 4294967296)))) (= c_~x_1~0 0)))) is different from false [2024-01-31 17:02:23,658 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse6 (mod c_~x_1~0 4294967296))) (let ((.cse0 (mod c_thread1Thread1of1ForFork0_~i~0 4294967296)) (.cse2 (+ .cse6 4294967296)) (.cse4 (mod c_~x_2~0 4294967296))) (and (forall ((v_z_312 Int) (v_y_312 Int)) (let ((.cse1 (+ (* 2863311531 v_z_312) (* v_y_312 4294967296))) (.cse3 (+ .cse4 v_z_312))) (or (< .cse0 .cse1) (< .cse1 0) (< 4294967295 v_z_312) (= .cse2 .cse3) (< .cse3 4294967296)))) (forall ((v_z_312 Int) (v_y_312 Int)) (let ((.cse5 (+ (* 2863311531 v_z_312) (* v_y_312 4294967296))) (.cse7 (+ .cse4 v_z_312))) (or (< .cse0 .cse5) (= .cse6 .cse7) (< .cse5 0) (< 4294967295 .cse7) (< v_z_312 0)))) (= c_~x_2~0 0) (= c_thread1Thread1of1ForFork0_~i~0 0) (= c_~x_1~0 0) (forall ((v_z_312 Int) (v_y_312 Int)) (let ((.cse8 (+ (* 2863311531 v_z_312) (* v_y_312 4294967296))) (.cse9 (+ .cse4 v_z_312))) (or (< .cse0 .cse8) (= .cse6 .cse9) (< .cse8 0) (< 4294967295 v_z_312) (= .cse2 .cse9) (< v_z_312 0))))))) is different from false [2024-01-31 17:02:24,512 INFO L124 PetriNetUnfolderBase]: 746/1425 cut-off events. [2024-01-31 17:02:24,512 INFO L125 PetriNetUnfolderBase]: For 18680/18680 co-relation queries the response was YES. [2024-01-31 17:02:24,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10847 conditions, 1425 events. 746/1425 cut-off events. For 18680/18680 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 8470 event pairs, 90 based on Foata normal form. 3/1400 useless extension candidates. Maximal degree in co-relation 10730. Up to 1323 conditions per place. [2024-01-31 17:02:24,524 INFO L140 encePairwiseOnDemand]: 9/19 looper letters, 340 selfloop transitions, 19 changer transitions 23/383 dead transitions. [2024-01-31 17:02:24,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 383 transitions, 5727 flow [2024-01-31 17:02:24,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-01-31 17:02:24,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-01-31 17:02:24,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 112 transitions. [2024-01-31 17:02:24,525 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4534412955465587 [2024-01-31 17:02:24,525 INFO L175 Difference]: Start difference. First operand has 313 places, 327 transitions, 4214 flow. Second operand 13 states and 112 transitions. [2024-01-31 17:02:24,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 383 transitions, 5727 flow [2024-01-31 17:02:24,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 383 transitions, 5361 flow, removed 74 selfloop flow, removed 26 redundant places. [2024-01-31 17:02:24,603 INFO L231 Difference]: Finished difference. Result has 306 places, 343 transitions, 4308 flow [2024-01-31 17:02:24,603 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=19, PETRI_DIFFERENCE_MINUEND_FLOW=3909, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4308, PETRI_PLACES=306, PETRI_TRANSITIONS=343} [2024-01-31 17:02:24,603 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 285 predicate places. [2024-01-31 17:02:24,604 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 343 transitions, 4308 flow [2024-01-31 17:02:24,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.352941176470588) internal successors, (91), 17 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:02:24,604 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:02:24,604 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:02:24,618 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2024-01-31 17:02:24,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:02:24,815 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:02:24,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:02:24,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1574377982, now seen corresponding path program 24 times [2024-01-31 17:02:24,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:02:24,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943705659] [2024-01-31 17:02:24,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:02:24,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:02:24,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:02:25,395 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:02:25,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:02:25,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943705659] [2024-01-31 17:02:25,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943705659] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:02:25,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1298682198] [2024-01-31 17:02:25,395 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-01-31 17:02:25,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:02:25,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:02:25,396 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) [2024-01-31 17:02:25,397 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-01-31 17:02:25,503 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-01-31 17:02:25,503 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 17:02:25,505 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 25 conjunts are in the unsatisfiable core [2024-01-31 17:02:25,505 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:02:25,739 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:02:25,739 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 17:03:21,667 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (* 4294967296 (div c_~x_1~0 4294967296))) (.cse0 (mod (+ c_thread1Thread1of1ForFork0_~i~0 1) 4294967296)) (.cse3 (+ (mod c_thread1Thread1of1ForFork0_~i~0 4294967296) 1))) (and (forall ((v_z_317 Int)) (or (< .cse0 v_z_317) (let ((.cse2 (* 2 v_z_317))) (< (+ c_~x_2~0 .cse1 .cse2) (+ c_~x_1~0 3 (* (div (+ c_~x_2~0 .cse2) 4294967296) 4294967296)))) (< v_z_317 .cse3))) (forall ((v_z_317 Int)) (let ((.cse4 (* 2 v_z_317))) (let ((.cse5 (* (div (+ c_~x_2~0 .cse4) 4294967296) 4294967296))) (or (< (+ c_~x_2~0 .cse1 .cse4 4294967293) (+ c_~x_1~0 .cse5)) (< .cse0 v_z_317) (< (+ c_~x_1~0 .cse5 1) (+ c_~x_2~0 .cse1 .cse4)) (< v_z_317 .cse3))))) (forall ((v_z_317 Int)) (or (let ((.cse6 (* 2 v_z_317))) (< (+ c_~x_1~0 (* (div (+ c_~x_2~0 .cse6) 4294967296) 4294967296)) (+ c_~x_2~0 4294967295 .cse1 .cse6))) (< .cse0 v_z_317) (< v_z_317 .cse3))))) is different from false [2024-01-31 17:03:21,727 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:03:21,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1298682198] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 17:03:21,728 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 17:03:21,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2024-01-31 17:03:21,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664807764] [2024-01-31 17:03:21,728 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 17:03:21,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-01-31 17:03:21,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:03:21,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-01-31 17:03:21,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=265, Unknown=13, NotChecked=34, Total=380 [2024-01-31 17:03:21,729 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 19 [2024-01-31 17:03:21,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 343 transitions, 4308 flow. Second operand has 20 states, 20 states have (on average 4.9) internal successors, (98), 20 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:03:21,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:03:21,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 19 [2024-01-31 17:03:21,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:03:44,902 INFO L124 PetriNetUnfolderBase]: 751/1432 cut-off events. [2024-01-31 17:03:44,902 INFO L125 PetriNetUnfolderBase]: For 19782/19782 co-relation queries the response was YES. [2024-01-31 17:03:44,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10697 conditions, 1432 events. 751/1432 cut-off events. For 19782/19782 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 8536 event pairs, 84 based on Foata normal form. 2/1406 useless extension candidates. Maximal degree in co-relation 10576. Up to 1252 conditions per place. [2024-01-31 17:03:44,914 INFO L140 encePairwiseOnDemand]: 11/19 looper letters, 317 selfloop transitions, 64 changer transitions 10/392 dead transitions. [2024-01-31 17:03:44,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 392 transitions, 5482 flow [2024-01-31 17:03:44,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-01-31 17:03:44,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-01-31 17:03:44,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 154 transitions. [2024-01-31 17:03:44,915 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4052631578947368 [2024-01-31 17:03:44,915 INFO L175 Difference]: Start difference. First operand has 306 places, 343 transitions, 4308 flow. Second operand 20 states and 154 transitions. [2024-01-31 17:03:44,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 392 transitions, 5482 flow [2024-01-31 17:03:44,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 392 transitions, 5423 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-01-31 17:03:44,996 INFO L231 Difference]: Finished difference. Result has 321 places, 351 transitions, 4612 flow [2024-01-31 17:03:44,996 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=19, PETRI_DIFFERENCE_MINUEND_FLOW=4254, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=4612, PETRI_PLACES=321, PETRI_TRANSITIONS=351} [2024-01-31 17:03:44,997 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 300 predicate places. [2024-01-31 17:03:44,997 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 351 transitions, 4612 flow [2024-01-31 17:03:44,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.9) internal successors, (98), 20 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:03:44,997 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:03:44,997 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:03:45,009 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2024-01-31 17:03:45,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-01-31 17:03:45,210 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:03:45,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:03:45,210 INFO L85 PathProgramCache]: Analyzing trace with hash -1390957161, now seen corresponding path program 4 times [2024-01-31 17:03:45,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:03:45,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650023781] [2024-01-31 17:03:45,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:03:45,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:03:45,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:03:45,420 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:03:45,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:03:45,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650023781] [2024-01-31 17:03:45,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650023781] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:03:45,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1776203718] [2024-01-31 17:03:45,421 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-01-31 17:03:45,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:03:45,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:03:45,422 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) [2024-01-31 17:03:45,423 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-01-31 17:03:45,552 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-01-31 17:03:45,552 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 17:03:45,553 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 16 conjunts are in the unsatisfiable core [2024-01-31 17:03:45,554 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:03:53,732 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:03:53,732 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 17:04:06,103 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse7 (mod c_~x_1~0 4294967296))) (let ((.cse3 (+ .cse7 4294967296)) (.cse2 (mod c_thread1Thread1of1ForFork0_~i~0 4294967296)) (.cse4 (mod c_~x_2~0 4294967296))) (and (forall ((v_z_324 Int) (v_y_324 Int)) (let ((.cse0 (+ (* 2863311531 v_z_324) (* v_y_324 4294967296))) (.cse1 (+ .cse4 v_z_324))) (or (< .cse0 0) (< .cse1 4294967296) (< .cse2 .cse0) (= .cse3 .cse1) (< 4294967295 v_z_324)))) (forall ((v_z_324 Int) (v_y_324 Int)) (let ((.cse5 (+ (* 2863311531 v_z_324) (* v_y_324 4294967296))) (.cse6 (+ .cse4 v_z_324))) (or (< .cse5 0) (< .cse2 .cse5) (= .cse3 .cse6) (< 4294967295 v_z_324) (< v_z_324 0) (= .cse6 .cse7)))) (forall ((v_z_324 Int) (v_y_324 Int)) (let ((.cse8 (+ (* 2863311531 v_z_324) (* v_y_324 4294967296))) (.cse9 (+ .cse4 v_z_324))) (or (< .cse8 0) (< 4294967295 .cse9) (< .cse2 .cse8) (< v_z_324 0) (= .cse9 .cse7))))))) is different from false [2024-01-31 17:04:26,266 WARN L293 SmtUtils]: Spent 16.06s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-01-31 17:04:46,366 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-01-31 17:04:54,494 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (mod c_~x_1~0 4294967296))) (let ((.cse3 (+ .cse1 4294967296)) (.cse2 (mod c_~x_2~0 4294967296))) (and (forall ((v_z_324 Int) (v_y_324 Int)) (let ((.cse0 (+ .cse2 v_z_324))) (or (< 4294967295 .cse0) (not (= (+ (* 2863311531 v_z_324) (* v_y_324 4294967296)) 0)) (< v_z_324 0) (= .cse0 .cse1)))) (forall ((v_z_324 Int) (v_y_324 Int)) (let ((.cse4 (+ .cse2 v_z_324))) (or (not (= (+ (* 2863311531 v_z_324) (* v_y_324 4294967296)) 0)) (= .cse3 .cse4) (< 4294967295 v_z_324) (< v_z_324 0) (= .cse4 .cse1)))) (forall ((v_z_324 Int) (v_y_324 Int)) (let ((.cse5 (+ .cse2 v_z_324))) (or (< .cse5 4294967296) (not (= (+ (* 2863311531 v_z_324) (* v_y_324 4294967296)) 0)) (= .cse3 .cse5) (< 4294967295 v_z_324))))))) is different from false [2024-01-31 17:05:14,777 WARN L293 SmtUtils]: Spent 16.06s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-01-31 17:05:30,847 WARN L293 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-01-31 17:05:55,036 WARN L293 SmtUtils]: Spent 16.04s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-01-31 17:06:11,135 WARN L293 SmtUtils]: Spent 8.05s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-01-31 17:06:17,367 WARN L293 SmtUtils]: Spent 6.23s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-01-31 17:06:37,468 WARN L293 SmtUtils]: Spent 16.08s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-01-31 17:06:53,541 WARN L293 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-01-31 17:07:17,636 WARN L293 SmtUtils]: Spent 16.06s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-01-31 17:07:33,713 WARN L293 SmtUtils]: Spent 8.04s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-01-31 17:07:37,751 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2024-01-31 17:07:37,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1776203718] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 17:07:37,751 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 17:07:37,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-01-31 17:07:37,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170813265] [2024-01-31 17:07:37,751 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 17:07:37,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-01-31 17:07:37,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:07:37,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-01-31 17:07:37,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=129, Unknown=5, NotChecked=50, Total=240 [2024-01-31 17:07:37,752 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 19 [2024-01-31 17:07:37,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 351 transitions, 4612 flow. Second operand has 16 states, 16 states have (on average 5.4375) internal successors, (87), 16 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:07:37,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:07:37,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 19 [2024-01-31 17:07:37,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:07:41,793 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (mod c_~x_1~0 4294967296))) (let ((.cse3 (+ .cse1 4294967296)) (.cse2 (mod c_~x_2~0 4294967296))) (and (= c_~x_2~0 0) (forall ((v_z_324 Int) (v_y_324 Int)) (let ((.cse0 (+ .cse2 v_z_324))) (or (< 4294967295 .cse0) (not (= (+ (* 2863311531 v_z_324) (* v_y_324 4294967296)) 0)) (< v_z_324 0) (= .cse0 .cse1)))) (forall ((v_z_324 Int) (v_y_324 Int)) (let ((.cse4 (+ .cse2 v_z_324))) (or (not (= (+ (* 2863311531 v_z_324) (* v_y_324 4294967296)) 0)) (= .cse3 .cse4) (< 4294967295 v_z_324) (< v_z_324 0) (= .cse4 .cse1)))) (= c_~x_1~0 0) (forall ((v_z_324 Int) (v_y_324 Int)) (let ((.cse5 (+ .cse2 v_z_324))) (or (< .cse5 4294967296) (not (= (+ (* 2863311531 v_z_324) (* v_y_324 4294967296)) 0)) (= .cse3 .cse5) (< 4294967295 v_z_324))))))) is different from false [2024-01-31 17:07:45,967 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse7 (mod c_~x_1~0 4294967296))) (let ((.cse3 (+ .cse7 4294967296)) (.cse2 (mod c_thread1Thread1of1ForFork0_~i~0 4294967296)) (.cse4 (mod c_~x_2~0 4294967296))) (and (= c_~x_2~0 0) (forall ((v_z_324 Int) (v_y_324 Int)) (let ((.cse0 (+ (* 2863311531 v_z_324) (* v_y_324 4294967296))) (.cse1 (+ .cse4 v_z_324))) (or (< .cse0 0) (< .cse1 4294967296) (< .cse2 .cse0) (= .cse3 .cse1) (< 4294967295 v_z_324)))) (= c_thread1Thread1of1ForFork0_~i~0 0) (forall ((v_z_324 Int) (v_y_324 Int)) (let ((.cse5 (+ (* 2863311531 v_z_324) (* v_y_324 4294967296))) (.cse6 (+ .cse4 v_z_324))) (or (< .cse5 0) (< .cse2 .cse5) (= .cse3 .cse6) (< 4294967295 v_z_324) (< v_z_324 0) (= .cse6 .cse7)))) (= c_~x_1~0 0) (forall ((v_z_324 Int) (v_y_324 Int)) (let ((.cse8 (+ (* 2863311531 v_z_324) (* v_y_324 4294967296))) (.cse9 (+ .cse4 v_z_324))) (or (< .cse8 0) (< 4294967295 .cse9) (< .cse2 .cse8) (< v_z_324 0) (= .cse9 .cse7))))))) is different from false [2024-01-31 17:07:46,966 INFO L124 PetriNetUnfolderBase]: 783/1491 cut-off events. [2024-01-31 17:07:46,966 INFO L125 PetriNetUnfolderBase]: For 25322/25322 co-relation queries the response was YES. [2024-01-31 17:07:46,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11866 conditions, 1491 events. 783/1491 cut-off events. For 25322/25322 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 8924 event pairs, 96 based on Foata normal form. 2/1469 useless extension candidates. Maximal degree in co-relation 11731. Up to 1362 conditions per place. [2024-01-31 17:07:46,978 INFO L140 encePairwiseOnDemand]: 9/19 looper letters, 359 selfloop transitions, 24 changer transitions 4/388 dead transitions. [2024-01-31 17:07:46,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 388 transitions, 6047 flow [2024-01-31 17:07:46,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-01-31 17:07:46,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-01-31 17:07:46,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 100 transitions. [2024-01-31 17:07:46,979 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4784688995215311 [2024-01-31 17:07:46,979 INFO L175 Difference]: Start difference. First operand has 321 places, 351 transitions, 4612 flow. Second operand 11 states and 100 transitions. [2024-01-31 17:07:46,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 388 transitions, 6047 flow [2024-01-31 17:07:47,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 388 transitions, 5902 flow, removed 43 selfloop flow, removed 14 redundant places. [2024-01-31 17:07:47,077 INFO L231 Difference]: Finished difference. Result has 317 places, 359 transitions, 4867 flow [2024-01-31 17:07:47,078 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=19, PETRI_DIFFERENCE_MINUEND_FLOW=4475, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=351, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4867, PETRI_PLACES=317, PETRI_TRANSITIONS=359} [2024-01-31 17:07:47,078 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 296 predicate places. [2024-01-31 17:07:47,078 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 359 transitions, 4867 flow [2024-01-31 17:07:47,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.4375) internal successors, (87), 16 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:07:47,079 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:07:47,079 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:07:47,092 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2024-01-31 17:07:47,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-01-31 17:07:47,293 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:07:47,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:07:47,293 INFO L85 PathProgramCache]: Analyzing trace with hash -2080653297, now seen corresponding path program 5 times [2024-01-31 17:07:47,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:07:47,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525463307] [2024-01-31 17:07:47,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:07:47,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:07:47,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:07:47,428 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:07:47,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:07:47,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525463307] [2024-01-31 17:07:47,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525463307] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:07:47,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [297733944] [2024-01-31 17:07:47,429 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-01-31 17:07:47,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:07:47,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:07:47,430 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) [2024-01-31 17:07:47,430 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-01-31 17:07:47,561 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-01-31 17:07:47,561 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 17:07:47,562 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 16 conjunts are in the unsatisfiable core [2024-01-31 17:07:47,562 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:07:55,736 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:07:55,736 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 17:08:04,156 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse3 (mod c_~x_1~0 4294967296))) (let ((.cse0 (mod c_thread1Thread1of1ForFork0_~i~0 4294967296)) (.cse6 (+ .cse3 4294967296)) (.cse4 (mod c_~x_2~0 4294967296))) (and (forall ((v_z_330 Int) (v_y_330 Int)) (let ((.cse1 (+ (* 2863311531 v_z_330) (* v_y_330 4294967296))) (.cse2 (+ .cse4 v_z_330))) (or (< .cse0 .cse1) (< .cse1 0) (< v_z_330 0) (< 4294967295 .cse2) (= .cse2 .cse3)))) (forall ((v_z_330 Int) (v_y_330 Int)) (let ((.cse5 (+ (* 2863311531 v_z_330) (* v_y_330 4294967296))) (.cse7 (+ .cse4 v_z_330))) (or (< 4294967295 v_z_330) (< .cse0 .cse5) (< .cse5 0) (< v_z_330 0) (= .cse6 .cse7) (= .cse7 .cse3)))) (forall ((v_z_330 Int) (v_y_330 Int)) (let ((.cse8 (+ (* 2863311531 v_z_330) (* v_y_330 4294967296))) (.cse9 (+ .cse4 v_z_330))) (or (< 4294967295 v_z_330) (< .cse0 .cse8) (< .cse8 0) (= .cse6 .cse9) (< .cse9 4294967296))))))) is different from false [2024-01-31 17:08:13,758 WARN L293 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-01-31 17:08:34,260 WARN L293 SmtUtils]: Spent 16.04s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-01-31 17:08:46,526 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (mod c_~x_1~0 4294967296))) (let ((.cse3 (+ .cse1 4294967296)) (.cse2 (mod c_~x_2~0 4294967296))) (and (forall ((v_z_330 Int) (v_y_330 Int)) (let ((.cse0 (+ .cse2 v_z_330))) (or (< v_z_330 0) (not (= (+ (* 2863311531 v_z_330) (* v_y_330 4294967296)) 0)) (< 4294967295 .cse0) (= .cse0 .cse1)))) (forall ((v_z_330 Int) (v_y_330 Int)) (let ((.cse4 (+ .cse2 v_z_330))) (or (< 4294967295 v_z_330) (< v_z_330 0) (= .cse3 .cse4) (not (= (+ (* 2863311531 v_z_330) (* v_y_330 4294967296)) 0)) (= .cse4 .cse1)))) (forall ((v_z_330 Int) (v_y_330 Int)) (let ((.cse5 (+ .cse2 v_z_330))) (or (< 4294967295 v_z_330) (= .cse3 .cse5) (not (= (+ (* 2863311531 v_z_330) (* v_y_330 4294967296)) 0)) (< .cse5 4294967296))))))) is different from false [2024-01-31 17:08:58,648 WARN L293 SmtUtils]: Spent 8.05s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-01-31 17:09:10,681 WARN L293 SmtUtils]: Spent 12.03s on a formula simplification that was a NOOP. DAG size: 8 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-01-31 17:09:30,767 WARN L293 SmtUtils]: Spent 16.06s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) Killed by 15