./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/popl20-more-array-sum-alt2.wvr.c --full-output --traceabstraction.positions.where.we.compute.the.hoare.annotation All --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 273a578a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/popl20-more-array-sum-alt2.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4018a1168c08743b2a9b9283b6137e1dcc53bdf8ab8362348f4bbe02762305c3 --traceabstraction.positions.where.we.compute.the.hoare.annotation All --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.owicki-witnesses-273a578-m [2024-02-19 14:56:46,961 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-19 14:56:47,035 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-19 14:56:47,044 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-19 14:56:47,044 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-19 14:56:47,082 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-19 14:56:47,083 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-19 14:56:47,083 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-19 14:56:47,083 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-19 14:56:47,085 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-19 14:56:47,085 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-19 14:56:47,086 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-19 14:56:47,086 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-19 14:56:47,090 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-19 14:56:47,090 INFO L153 SettingsManager]: * Use SBE=true [2024-02-19 14:56:47,091 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-19 14:56:47,092 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-19 14:56:47,092 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-19 14:56:47,092 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-19 14:56:47,093 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-19 14:56:47,093 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-19 14:56:47,094 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-19 14:56:47,094 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-19 14:56:47,094 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-19 14:56:47,095 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-19 14:56:47,095 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-19 14:56:47,095 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-19 14:56:47,095 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-19 14:56:47,096 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-19 14:56:47,096 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-19 14:56:47,097 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-19 14:56:47,097 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-19 14:56:47,098 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-19 14:56:47,098 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-19 14:56:47,098 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-19 14:56:47,098 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-19 14:56:47,099 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-19 14:56:47,099 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-19 14:56:47,099 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-19 14:56:47,100 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-19 14:56:47,100 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-19 14:56:47,100 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-19 14:56:47,100 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-19 14:56:47,101 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4018a1168c08743b2a9b9283b6137e1dcc53bdf8ab8362348f4bbe02762305c3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All [2024-02-19 14:56:47,402 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-19 14:56:47,429 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-19 14:56:47,432 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-19 14:56:47,433 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-19 14:56:47,433 INFO L274 PluginConnector]: CDTParser initialized [2024-02-19 14:56:47,434 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-array-sum-alt2.wvr.c [2024-02-19 14:56:48,586 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-19 14:56:48,783 INFO L384 CDTParser]: Found 1 translation units. [2024-02-19 14:56:48,785 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-array-sum-alt2.wvr.c [2024-02-19 14:56:48,799 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a12ed5c8e/ba7cead18e724b65b2ef33de5afb6c46/FLAG14a246a74 [2024-02-19 14:56:48,813 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a12ed5c8e/ba7cead18e724b65b2ef33de5afb6c46 [2024-02-19 14:56:48,816 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-19 14:56:48,817 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-02-19 14:56:48,818 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-19 14:56:48,818 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-19 14:56:48,823 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-19 14:56:48,824 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 02:56:48" (1/1) ... [2024-02-19 14:56:48,825 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53e7133 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:56:48, skipping insertion in model container [2024-02-19 14:56:48,825 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 02:56:48" (1/1) ... [2024-02-19 14:56:48,847 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-02-19 14:56:49,056 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/popl20-more-array-sum-alt2.wvr.c[2525,2538] [2024-02-19 14:56:49,070 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-19 14:56:49,085 INFO L202 MainTranslator]: Completed pre-run [2024-02-19 14:56:49,121 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/popl20-more-array-sum-alt2.wvr.c[2525,2538] [2024-02-19 14:56:49,130 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-19 14:56:49,144 INFO L206 MainTranslator]: Completed translation [2024-02-19 14:56:49,145 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:56:49 WrapperNode [2024-02-19 14:56:49,145 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-19 14:56:49,146 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-19 14:56:49,146 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-19 14:56:49,146 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-19 14:56:49,153 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:56:49" (1/1) ... [2024-02-19 14:56:49,170 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:56:49" (1/1) ... [2024-02-19 14:56:49,208 INFO L138 Inliner]: procedures = 25, calls = 45, calls flagged for inlining = 12, calls inlined = 16, statements flattened = 197 [2024-02-19 14:56:49,209 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-19 14:56:49,210 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-19 14:56:49,210 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-19 14:56:49,210 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-19 14:56:49,220 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:56:49" (1/1) ... [2024-02-19 14:56:49,221 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:56:49" (1/1) ... [2024-02-19 14:56:49,235 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:56:49" (1/1) ... [2024-02-19 14:56:49,254 INFO L175 MemorySlicer]: Split 12 memory accesses to 5 slices as follows [2, 2, 2, 2, 4]. 33 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 4 writes are split as follows [0, 1, 1, 1, 1]. [2024-02-19 14:56:49,260 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:56:49" (1/1) ... [2024-02-19 14:56:49,260 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:56:49" (1/1) ... [2024-02-19 14:56:49,284 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:56:49" (1/1) ... [2024-02-19 14:56:49,300 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:56:49" (1/1) ... [2024-02-19 14:56:49,302 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:56:49" (1/1) ... [2024-02-19 14:56:49,304 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:56:49" (1/1) ... [2024-02-19 14:56:49,306 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-19 14:56:49,307 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-19 14:56:49,311 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-19 14:56:49,311 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-19 14:56:49,312 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:56:49" (1/1) ... [2024-02-19 14:56:49,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-19 14:56:49,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:56:49,349 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-02-19 14:56:49,372 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-02-19 14:56:49,399 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-19 14:56:49,399 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-19 14:56:49,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-19 14:56:49,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-19 14:56:49,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-19 14:56:49,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-02-19 14:56:49,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-02-19 14:56:49,401 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-02-19 14:56:49,401 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-02-19 14:56:49,402 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-02-19 14:56:49,402 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-02-19 14:56:49,402 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-02-19 14:56:49,402 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-02-19 14:56:49,402 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-02-19 14:56:49,402 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-02-19 14:56:49,402 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-02-19 14:56:49,403 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-02-19 14:56:49,403 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-02-19 14:56:49,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-19 14:56:49,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-19 14:56:49,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-19 14:56:49,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-02-19 14:56:49,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-02-19 14:56:49,405 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-02-19 14:56:49,405 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-02-19 14:56:49,405 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-02-19 14:56:49,405 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-19 14:56:49,406 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-19 14:56:49,406 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-19 14:56:49,408 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-02-19 14:56:49,544 INFO L244 CfgBuilder]: Building ICFG [2024-02-19 14:56:49,546 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-19 14:56:49,889 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-19 14:56:49,889 INFO L293 CfgBuilder]: Performing block encoding [2024-02-19 14:56:50,194 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-19 14:56:50,195 INFO L320 CfgBuilder]: Removed 4 assume(true) statements. [2024-02-19 14:56:50,195 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 02:56:50 BoogieIcfgContainer [2024-02-19 14:56:50,195 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-19 14:56:50,197 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-19 14:56:50,197 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-19 14:56:50,200 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-19 14:56:50,200 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.02 02:56:48" (1/3) ... [2024-02-19 14:56:50,201 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67fb363b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 02:56:50, skipping insertion in model container [2024-02-19 14:56:50,201 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:56:49" (2/3) ... [2024-02-19 14:56:50,201 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67fb363b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 02:56:50, skipping insertion in model container [2024-02-19 14:56:50,202 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 02:56:50" (3/3) ... [2024-02-19 14:56:50,203 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-array-sum-alt2.wvr.c [2024-02-19 14:56:50,219 INFO L221 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-19 14:56:50,219 INFO L180 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-02-19 14:56:50,219 INFO L631 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-19 14:56:50,256 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-02-19 14:56:50,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 41 places, 35 transitions, 91 flow [2024-02-19 14:56:50,309 INFO L124 PetriNetUnfolderBase]: 4/32 cut-off events. [2024-02-19 14:56:50,309 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-02-19 14:56:50,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 32 events. 4/32 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 37 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 24. Up to 2 conditions per place. [2024-02-19 14:56:50,314 INFO L82 GeneralOperation]: Start removeDead. Operand has 41 places, 35 transitions, 91 flow [2024-02-19 14:56:50,317 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 37 places, 31 transitions, 80 flow [2024-02-19 14:56:50,334 INFO L368 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-19 14:56:50,341 INFO L369 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@237ff381, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-19 14:56:50,341 INFO L370 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-02-19 14:56:50,357 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-19 14:56:50,357 INFO L124 PetriNetUnfolderBase]: 4/30 cut-off events. [2024-02-19 14:56:50,358 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-02-19 14:56:50,358 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:56:50,359 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:56:50,359 INFO L432 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 14:56:50,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:56:50,366 INFO L85 PathProgramCache]: Analyzing trace with hash 1014432141, now seen corresponding path program 1 times [2024-02-19 14:56:50,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:56:50,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770598083] [2024-02-19 14:56:50,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:56:50,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:56:50,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:56:50,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:56:50,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:56:50,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770598083] [2024-02-19 14:56:50,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770598083] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:56:50,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 14:56:50,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-19 14:56:50,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732425745] [2024-02-19 14:56:50,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:56:50,750 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-19 14:56:50,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:56:50,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-19 14:56:50,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-19 14:56:50,781 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 35 [2024-02-19 14:56:50,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 31 transitions, 80 flow. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 14:56:50,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:56:50,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 35 [2024-02-19 14:56:50,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:56:51,037 INFO L124 PetriNetUnfolderBase]: 655/1008 cut-off events. [2024-02-19 14:56:51,038 INFO L125 PetriNetUnfolderBase]: For 74/74 co-relation queries the response was YES. [2024-02-19 14:56:51,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1993 conditions, 1008 events. 655/1008 cut-off events. For 74/74 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 4405 event pairs, 93 based on Foata normal form. 1/999 useless extension candidates. Maximal degree in co-relation 1605. Up to 822 conditions per place. [2024-02-19 14:56:51,047 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 35 selfloop transitions, 4 changer transitions 1/47 dead transitions. [2024-02-19 14:56:51,048 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 47 transitions, 207 flow [2024-02-19 14:56:51,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-19 14:56:51,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-19 14:56:51,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 71 transitions. [2024-02-19 14:56:51,059 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6761904761904762 [2024-02-19 14:56:51,062 INFO L308 CegarLoopForPetriNet]: 37 programPoint places, 2 predicate places. [2024-02-19 14:56:51,062 INFO L507 AbstractCegarLoop]: Abstraction has has 39 places, 47 transitions, 207 flow [2024-02-19 14:56:51,063 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 14:56:51,063 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:56:51,063 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:56:51,063 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-19 14:56:51,064 INFO L432 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 14:56:51,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:56:51,065 INFO L85 PathProgramCache]: Analyzing trace with hash -1340802121, now seen corresponding path program 1 times [2024-02-19 14:56:51,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:56:51,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771177093] [2024-02-19 14:56:51,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:56:51,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:56:51,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:56:51,270 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:56:51,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:56:51,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771177093] [2024-02-19 14:56:51,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771177093] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:56:51,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 14:56:51,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-19 14:56:51,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846530507] [2024-02-19 14:56:51,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:56:51,273 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-19 14:56:51,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:56:51,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-19 14:56:51,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-02-19 14:56:51,278 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-02-19 14:56:51,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 47 transitions, 207 flow. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 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) [2024-02-19 14:56:51,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:56:51,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-02-19 14:56:51,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:56:51,541 INFO L124 PetriNetUnfolderBase]: 1235/1938 cut-off events. [2024-02-19 14:56:51,541 INFO L125 PetriNetUnfolderBase]: For 436/565 co-relation queries the response was YES. [2024-02-19 14:56:51,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5467 conditions, 1938 events. 1235/1938 cut-off events. For 436/565 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 9934 event pairs, 196 based on Foata normal form. 50/1952 useless extension candidates. Maximal degree in co-relation 2888. Up to 1381 conditions per place. [2024-02-19 14:56:51,554 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 87 selfloop transitions, 6 changer transitions 2/100 dead transitions. [2024-02-19 14:56:51,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 100 transitions, 646 flow [2024-02-19 14:56:51,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-19 14:56:51,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-19 14:56:51,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 100 transitions. [2024-02-19 14:56:51,556 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2024-02-19 14:56:51,557 INFO L308 CegarLoopForPetriNet]: 37 programPoint places, 6 predicate places. [2024-02-19 14:56:51,557 INFO L507 AbstractCegarLoop]: Abstraction has has 43 places, 100 transitions, 646 flow [2024-02-19 14:56:51,558 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 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) [2024-02-19 14:56:51,558 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:56:51,558 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:56:51,558 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-19 14:56:51,559 INFO L432 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 14:56:51,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:56:51,559 INFO L85 PathProgramCache]: Analyzing trace with hash -1591042873, now seen corresponding path program 1 times [2024-02-19 14:56:51,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:56:51,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673941057] [2024-02-19 14:56:51,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:56:51,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:56:51,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:56:51,700 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:56:51,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:56:51,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673941057] [2024-02-19 14:56:51,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673941057] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:56:51,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 14:56:51,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-19 14:56:51,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81269505] [2024-02-19 14:56:51,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:56:51,702 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-19 14:56:51,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:56:51,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-19 14:56:51,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-02-19 14:56:51,714 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-02-19 14:56:51,714 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 100 transitions, 646 flow. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 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) [2024-02-19 14:56:51,714 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:56:51,714 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-02-19 14:56:51,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:56:52,038 INFO L124 PetriNetUnfolderBase]: 1247/1906 cut-off events. [2024-02-19 14:56:52,038 INFO L125 PetriNetUnfolderBase]: For 1731/1870 co-relation queries the response was YES. [2024-02-19 14:56:52,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6955 conditions, 1906 events. 1247/1906 cut-off events. For 1731/1870 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 9555 event pairs, 297 based on Foata normal form. 43/1920 useless extension candidates. Maximal degree in co-relation 4298. Up to 1267 conditions per place. [2024-02-19 14:56:52,055 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 95 selfloop transitions, 8 changer transitions 10/119 dead transitions. [2024-02-19 14:56:52,056 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 119 transitions, 994 flow [2024-02-19 14:56:52,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-19 14:56:52,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-19 14:56:52,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 96 transitions. [2024-02-19 14:56:52,061 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5485714285714286 [2024-02-19 14:56:52,063 INFO L308 CegarLoopForPetriNet]: 37 programPoint places, 10 predicate places. [2024-02-19 14:56:52,063 INFO L507 AbstractCegarLoop]: Abstraction has has 47 places, 119 transitions, 994 flow [2024-02-19 14:56:52,063 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 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) [2024-02-19 14:56:52,063 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:56:52,063 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:56:52,064 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-02-19 14:56:52,064 INFO L432 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 14:56:52,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:56:52,065 INFO L85 PathProgramCache]: Analyzing trace with hash -729645032, now seen corresponding path program 1 times [2024-02-19 14:56:52,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:56:52,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210724825] [2024-02-19 14:56:52,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:56:52,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:56:52,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:56:52,252 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:56:52,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:56:52,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210724825] [2024-02-19 14:56:52,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210724825] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:56:52,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 14:56:52,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-19 14:56:52,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040333724] [2024-02-19 14:56:52,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:56:52,254 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-19 14:56:52,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:56:52,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-19 14:56:52,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-02-19 14:56:52,268 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-02-19 14:56:52,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 119 transitions, 994 flow. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 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) [2024-02-19 14:56:52,269 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:56:52,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-02-19 14:56:52,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:56:52,529 INFO L124 PetriNetUnfolderBase]: 1339/2015 cut-off events. [2024-02-19 14:56:52,530 INFO L125 PetriNetUnfolderBase]: For 3561/3607 co-relation queries the response was YES. [2024-02-19 14:56:52,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8652 conditions, 2015 events. 1339/2015 cut-off events. For 3561/3607 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 9138 event pairs, 458 based on Foata normal form. 32/2005 useless extension candidates. Maximal degree in co-relation 6289. Up to 1465 conditions per place. [2024-02-19 14:56:52,548 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 40 selfloop transitions, 2 changer transitions 51/98 dead transitions. [2024-02-19 14:56:52,548 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 98 transitions, 993 flow [2024-02-19 14:56:52,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-19 14:56:52,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-19 14:56:52,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 91 transitions. [2024-02-19 14:56:52,550 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.52 [2024-02-19 14:56:52,551 INFO L308 CegarLoopForPetriNet]: 37 programPoint places, 14 predicate places. [2024-02-19 14:56:52,552 INFO L507 AbstractCegarLoop]: Abstraction has has 51 places, 98 transitions, 993 flow [2024-02-19 14:56:52,552 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 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) [2024-02-19 14:56:52,552 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:56:52,552 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:56:52,552 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-02-19 14:56:52,553 INFO L432 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 14:56:52,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:56:52,553 INFO L85 PathProgramCache]: Analyzing trace with hash 2068249614, now seen corresponding path program 1 times [2024-02-19 14:56:52,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:56:52,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118630442] [2024-02-19 14:56:52,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:56:52,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:56:52,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:56:52,677 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-19 14:56:52,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:56:52,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118630442] [2024-02-19 14:56:52,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118630442] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:56:52,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [491684725] [2024-02-19 14:56:52,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:56:52,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:56:52,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:56:52,684 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 14:56:52,693 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-02-19 14:56:52,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:56:52,792 INFO L262 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 6 conjunts are in the unsatisfiable core [2024-02-19 14:56:52,799 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:56:52,879 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-19 14:56:52,880 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:56:52,924 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-19 14:56:52,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [491684725] provided 1 perfect and 1 imperfect interpolant sequences [2024-02-19 14:56:52,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-02-19 14:56:52,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 9 [2024-02-19 14:56:52,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297764489] [2024-02-19 14:56:52,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:56:52,927 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-19 14:56:52,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:56:52,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-19 14:56:52,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-02-19 14:56:52,936 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-02-19 14:56:52,936 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 98 transitions, 993 flow. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 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) [2024-02-19 14:56:52,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:56:52,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-02-19 14:56:52,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:56:53,234 INFO L124 PetriNetUnfolderBase]: 1342/1979 cut-off events. [2024-02-19 14:56:53,234 INFO L125 PetriNetUnfolderBase]: For 7031/7550 co-relation queries the response was YES. [2024-02-19 14:56:53,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10222 conditions, 1979 events. 1342/1979 cut-off events. For 7031/7550 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 8834 event pairs, 333 based on Foata normal form. 145/2042 useless extension candidates. Maximal degree in co-relation 8541. Up to 1439 conditions per place. [2024-02-19 14:56:53,252 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 53 selfloop transitions, 5 changer transitions 50/113 dead transitions. [2024-02-19 14:56:53,253 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 113 transitions, 1352 flow [2024-02-19 14:56:53,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-19 14:56:53,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-19 14:56:53,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 96 transitions. [2024-02-19 14:56:53,254 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5485714285714286 [2024-02-19 14:56:53,255 INFO L308 CegarLoopForPetriNet]: 37 programPoint places, 18 predicate places. [2024-02-19 14:56:53,255 INFO L507 AbstractCegarLoop]: Abstraction has has 55 places, 113 transitions, 1352 flow [2024-02-19 14:56:53,256 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 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) [2024-02-19 14:56:53,256 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:56:53,256 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:56:53,279 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-02-19 14:56:53,475 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:56:53,475 INFO L432 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 14:56:53,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:56:53,476 INFO L85 PathProgramCache]: Analyzing trace with hash -353861018, now seen corresponding path program 1 times [2024-02-19 14:56:53,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:56:53,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878290034] [2024-02-19 14:56:53,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:56:53,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:56:53,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:56:53,612 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:56:53,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:56:53,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878290034] [2024-02-19 14:56:53,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878290034] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:56:53,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1840877889] [2024-02-19 14:56:53,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:56:53,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:56:53,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:56:53,615 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 14:56:53,632 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-02-19 14:56:53,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:56:53,741 INFO L262 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 8 conjunts are in the unsatisfiable core [2024-02-19 14:56:53,743 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:56:53,849 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:56:53,850 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:56:53,922 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:56:53,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1840877889] provided 1 perfect and 1 imperfect interpolant sequences [2024-02-19 14:56:53,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-02-19 14:56:53,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 13 [2024-02-19 14:56:53,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718453677] [2024-02-19 14:56:53,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:56:53,923 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-19 14:56:53,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:56:53,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-19 14:56:53,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2024-02-19 14:56:53,952 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 35 [2024-02-19 14:56:53,952 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 113 transitions, 1352 flow. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 14:56:53,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:56:53,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 35 [2024-02-19 14:56:53,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:56:54,531 INFO L124 PetriNetUnfolderBase]: 2126/3103 cut-off events. [2024-02-19 14:56:54,532 INFO L125 PetriNetUnfolderBase]: For 11409/12013 co-relation queries the response was YES. [2024-02-19 14:56:54,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18603 conditions, 3103 events. 2126/3103 cut-off events. For 11409/12013 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 14282 event pairs, 226 based on Foata normal form. 40/3100 useless extension candidates. Maximal degree in co-relation 16590. Up to 2372 conditions per place. [2024-02-19 14:56:54,567 INFO L140 encePairwiseOnDemand]: 25/35 looper letters, 158 selfloop transitions, 26 changer transitions 50/238 dead transitions. [2024-02-19 14:56:54,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 238 transitions, 3297 flow [2024-02-19 14:56:54,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-19 14:56:54,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-19 14:56:54,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 167 transitions. [2024-02-19 14:56:54,569 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5301587301587302 [2024-02-19 14:56:54,569 INFO L308 CegarLoopForPetriNet]: 37 programPoint places, 26 predicate places. [2024-02-19 14:56:54,570 INFO L507 AbstractCegarLoop]: Abstraction has has 63 places, 238 transitions, 3297 flow [2024-02-19 14:56:54,570 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 14:56:54,570 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:56:54,570 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:56:54,592 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-02-19 14:56:54,780 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-02-19 14:56:54,781 INFO L432 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 14:56:54,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:56:54,781 INFO L85 PathProgramCache]: Analyzing trace with hash 451510012, now seen corresponding path program 2 times [2024-02-19 14:56:54,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:56:54,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859670513] [2024-02-19 14:56:54,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:56:54,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:56:54,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:56:54,909 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:56:54,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:56:54,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859670513] [2024-02-19 14:56:54,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859670513] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:56:54,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [261122707] [2024-02-19 14:56:54,910 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-19 14:56:54,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:56:54,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:56:54,911 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 14:56:54,931 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-02-19 14:56:55,022 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-19 14:56:55,022 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 14:56:55,024 INFO L262 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 8 conjunts are in the unsatisfiable core [2024-02-19 14:56:55,025 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:56:55,100 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:56:55,100 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:56:55,172 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:56:55,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [261122707] provided 1 perfect and 1 imperfect interpolant sequences [2024-02-19 14:56:55,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-02-19 14:56:55,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 13 [2024-02-19 14:56:55,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001938628] [2024-02-19 14:56:55,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:56:55,173 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-19 14:56:55,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:56:55,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-19 14:56:55,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2024-02-19 14:56:55,190 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 35 [2024-02-19 14:56:55,191 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 238 transitions, 3297 flow. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 14:56:55,191 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:56:55,191 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 35 [2024-02-19 14:56:55,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:56:55,818 INFO L124 PetriNetUnfolderBase]: 2707/3931 cut-off events. [2024-02-19 14:56:55,819 INFO L125 PetriNetUnfolderBase]: For 15561/16503 co-relation queries the response was YES. [2024-02-19 14:56:55,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27112 conditions, 3931 events. 2707/3931 cut-off events. For 15561/16503 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 18439 event pairs, 186 based on Foata normal form. 82/3950 useless extension candidates. Maximal degree in co-relation 24645. Up to 3075 conditions per place. [2024-02-19 14:56:55,854 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 345 selfloop transitions, 65 changer transitions 50/464 dead transitions. [2024-02-19 14:56:55,854 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 464 transitions, 7329 flow [2024-02-19 14:56:55,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-19 14:56:55,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-19 14:56:55,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 159 transitions. [2024-02-19 14:56:55,856 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5047619047619047 [2024-02-19 14:56:55,856 INFO L308 CegarLoopForPetriNet]: 37 programPoint places, 34 predicate places. [2024-02-19 14:56:55,856 INFO L507 AbstractCegarLoop]: Abstraction has has 71 places, 464 transitions, 7329 flow [2024-02-19 14:56:55,857 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 14:56:55,857 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:56:55,857 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:56:55,875 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-02-19 14:56:56,075 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:56:56,075 INFO L432 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 14:56:56,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:56:56,076 INFO L85 PathProgramCache]: Analyzing trace with hash -1744232418, now seen corresponding path program 3 times [2024-02-19 14:56:56,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:56:56,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625564021] [2024-02-19 14:56:56,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:56:56,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:56:56,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:56:56,206 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-19 14:56:56,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:56:56,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625564021] [2024-02-19 14:56:56,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625564021] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:56:56,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [984386126] [2024-02-19 14:56:56,207 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-02-19 14:56:56,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:56:56,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:56:56,208 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 14:56:56,231 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-02-19 14:56:56,307 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-02-19 14:56:56,307 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 14:56:56,308 INFO L262 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 8 conjunts are in the unsatisfiable core [2024-02-19 14:56:56,309 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:56:56,398 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-19 14:56:56,398 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:56:56,477 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-19 14:56:56,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [984386126] provided 1 perfect and 1 imperfect interpolant sequences [2024-02-19 14:56:56,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-02-19 14:56:56,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 15 [2024-02-19 14:56:56,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48280104] [2024-02-19 14:56:56,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:56:56,479 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-19 14:56:56,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:56:56,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-19 14:56:56,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2024-02-19 14:56:56,495 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 35 [2024-02-19 14:56:56,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 464 transitions, 7329 flow. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 14:56:56,495 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:56:56,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 35 [2024-02-19 14:56:56,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:56:57,242 INFO L124 PetriNetUnfolderBase]: 3248/4666 cut-off events. [2024-02-19 14:56:57,242 INFO L125 PetriNetUnfolderBase]: For 24440/26441 co-relation queries the response was YES. [2024-02-19 14:56:57,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36750 conditions, 4666 events. 3248/4666 cut-off events. For 24440/26441 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 22753 event pairs, 180 based on Foata normal form. 307/4874 useless extension candidates. Maximal degree in co-relation 33657. Up to 3676 conditions per place. [2024-02-19 14:56:57,304 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 457 selfloop transitions, 80 changer transitions 50/591 dead transitions. [2024-02-19 14:56:57,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 591 transitions, 10524 flow [2024-02-19 14:56:57,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-19 14:56:57,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-19 14:56:57,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 176 transitions. [2024-02-19 14:56:57,306 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5587301587301587 [2024-02-19 14:56:57,307 INFO L308 CegarLoopForPetriNet]: 37 programPoint places, 42 predicate places. [2024-02-19 14:56:57,307 INFO L507 AbstractCegarLoop]: Abstraction has has 79 places, 591 transitions, 10524 flow [2024-02-19 14:56:57,307 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 14:56:57,307 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:56:57,307 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:56:57,327 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-02-19 14:56:57,527 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:56:57,527 INFO L432 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 14:56:57,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:56:57,528 INFO L85 PathProgramCache]: Analyzing trace with hash -1505011862, now seen corresponding path program 4 times [2024-02-19 14:56:57,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:56:57,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924701723] [2024-02-19 14:56:57,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:56:57,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:56:57,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:56:57,660 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-19 14:56:57,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:56:57,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924701723] [2024-02-19 14:56:57,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924701723] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:56:57,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1596097202] [2024-02-19 14:56:57,665 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-02-19 14:56:57,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:56:57,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:56:57,668 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 14:56:57,694 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-02-19 14:56:57,757 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-02-19 14:56:57,757 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 14:56:57,758 INFO L262 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 6 conjunts are in the unsatisfiable core [2024-02-19 14:56:57,759 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:56:57,822 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-19 14:56:57,822 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:56:57,870 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-19 14:56:57,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1596097202] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 14:56:57,870 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 14:56:57,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2024-02-19 14:56:57,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466079271] [2024-02-19 14:56:57,871 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 14:56:57,871 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-02-19 14:56:57,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:56:57,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-02-19 14:56:57,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2024-02-19 14:56:57,895 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 35 [2024-02-19 14:56:57,896 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 591 transitions, 10524 flow. Second operand has 14 states, 14 states have (on average 7.142857142857143) internal successors, (100), 14 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 14:56:57,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:56:57,896 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 35 [2024-02-19 14:56:57,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:56:59,712 INFO L124 PetriNetUnfolderBase]: 4247/6110 cut-off events. [2024-02-19 14:56:59,712 INFO L125 PetriNetUnfolderBase]: For 23789/23789 co-relation queries the response was YES. [2024-02-19 14:56:59,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52144 conditions, 6110 events. 4247/6110 cut-off events. For 23789/23789 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 29484 event pairs, 115 based on Foata normal form. 18/6126 useless extension candidates. Maximal degree in co-relation 48816. Up to 4736 conditions per place. [2024-02-19 14:56:59,779 INFO L140 encePairwiseOnDemand]: 21/35 looper letters, 659 selfloop transitions, 238 changer transitions 52/950 dead transitions. [2024-02-19 14:56:59,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 950 transitions, 18197 flow [2024-02-19 14:56:59,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-02-19 14:56:59,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-02-19 14:56:59,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 368 transitions. [2024-02-19 14:56:59,782 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4205714285714286 [2024-02-19 14:56:59,783 INFO L308 CegarLoopForPetriNet]: 37 programPoint places, 66 predicate places. [2024-02-19 14:56:59,783 INFO L507 AbstractCegarLoop]: Abstraction has has 103 places, 950 transitions, 18197 flow [2024-02-19 14:56:59,783 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.142857142857143) internal successors, (100), 14 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 14:56:59,783 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:56:59,783 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:56:59,801 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-02-19 14:56:59,998 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:56:59,999 INFO L432 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 14:57:00,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:57:00,001 INFO L85 PathProgramCache]: Analyzing trace with hash 1979280072, now seen corresponding path program 5 times [2024-02-19 14:57:00,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:57:00,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526913417] [2024-02-19 14:57:00,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:57:00,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:57:00,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:57:00,169 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-19 14:57:00,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:57:00,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526913417] [2024-02-19 14:57:00,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526913417] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:57:00,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2046248750] [2024-02-19 14:57:00,170 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-02-19 14:57:00,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:57:00,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:57:00,172 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 14:57:00,194 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-02-19 14:57:00,279 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-19 14:57:00,279 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 14:57:00,280 INFO L262 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 6 conjunts are in the unsatisfiable core [2024-02-19 14:57:00,282 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:57:00,337 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-19 14:57:00,337 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:57:00,440 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-19 14:57:00,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2046248750] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 14:57:00,444 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 14:57:00,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-02-19 14:57:00,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485330261] [2024-02-19 14:57:00,447 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 14:57:00,448 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-02-19 14:57:00,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:57:00,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-02-19 14:57:00,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2024-02-19 14:57:00,477 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 35 [2024-02-19 14:57:00,477 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 950 transitions, 18197 flow. Second operand has 15 states, 15 states have (on average 6.866666666666666) internal successors, (103), 15 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 14:57:00,477 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:57:00,478 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 35 [2024-02-19 14:57:00,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:57:02,951 INFO L124 PetriNetUnfolderBase]: 6064/8712 cut-off events. [2024-02-19 14:57:02,951 INFO L125 PetriNetUnfolderBase]: For 27675/27675 co-relation queries the response was YES. [2024-02-19 14:57:02,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84004 conditions, 8712 events. 6064/8712 cut-off events. For 27675/27675 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 43470 event pairs, 113 based on Foata normal form. 16/8726 useless extension candidates. Maximal degree in co-relation 79748. Up to 7067 conditions per place. [2024-02-19 14:57:03,035 INFO L140 encePairwiseOnDemand]: 22/35 looper letters, 926 selfloop transitions, 373 changer transitions 52/1352 dead transitions. [2024-02-19 14:57:03,036 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 1352 transitions, 27732 flow [2024-02-19 14:57:03,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-02-19 14:57:03,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2024-02-19 14:57:03,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 480 transitions. [2024-02-19 14:57:03,039 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4155844155844156 [2024-02-19 14:57:03,039 INFO L308 CegarLoopForPetriNet]: 37 programPoint places, 98 predicate places. [2024-02-19 14:57:03,039 INFO L507 AbstractCegarLoop]: Abstraction has has 135 places, 1352 transitions, 27732 flow [2024-02-19 14:57:03,040 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.866666666666666) internal successors, (103), 15 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 14:57:03,040 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:57:03,040 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:57:03,059 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-02-19 14:57:03,254 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:57:03,255 INFO L432 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 14:57:03,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:57:03,256 INFO L85 PathProgramCache]: Analyzing trace with hash -2076466668, now seen corresponding path program 6 times [2024-02-19 14:57:03,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:57:03,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431914255] [2024-02-19 14:57:03,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:57:03,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:57:03,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:57:03,417 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-19 14:57:03,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:57:03,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431914255] [2024-02-19 14:57:03,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431914255] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:57:03,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [255256755] [2024-02-19 14:57:03,418 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-02-19 14:57:03,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:57:03,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:57:03,419 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 14:57:03,439 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-02-19 14:57:03,517 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-02-19 14:57:03,517 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 14:57:03,519 INFO L262 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 8 conjunts are in the unsatisfiable core [2024-02-19 14:57:03,520 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:57:03,590 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-19 14:57:03,590 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:57:03,664 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-19 14:57:03,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [255256755] provided 1 perfect and 1 imperfect interpolant sequences [2024-02-19 14:57:03,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-02-19 14:57:03,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 14 [2024-02-19 14:57:03,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315679190] [2024-02-19 14:57:03,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:57:03,665 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-19 14:57:03,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:57:03,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-19 14:57:03,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2024-02-19 14:57:03,679 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 35 [2024-02-19 14:57:03,679 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 1352 transitions, 27732 flow. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 14:57:03,679 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:57:03,679 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 35 [2024-02-19 14:57:03,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:57:05,528 INFO L124 PetriNetUnfolderBase]: 6185/8872 cut-off events. [2024-02-19 14:57:05,529 INFO L125 PetriNetUnfolderBase]: For 29925/29925 co-relation queries the response was YES. [2024-02-19 14:57:05,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93340 conditions, 8872 events. 6185/8872 cut-off events. For 29925/29925 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 44290 event pairs, 105 based on Foata normal form. 18/8888 useless extension candidates. Maximal degree in co-relation 88769. Up to 7198 conditions per place. [2024-02-19 14:57:05,608 INFO L140 encePairwiseOnDemand]: 23/35 looper letters, 1015 selfloop transitions, 186 changer transitions 52/1377 dead transitions. [2024-02-19 14:57:05,608 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 1377 transitions, 30767 flow [2024-02-19 14:57:05,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-19 14:57:05,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-19 14:57:05,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-02-19 14:57:05,610 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5392857142857143 [2024-02-19 14:57:05,610 INFO L308 CegarLoopForPetriNet]: 37 programPoint places, 105 predicate places. [2024-02-19 14:57:05,610 INFO L507 AbstractCegarLoop]: Abstraction has has 142 places, 1377 transitions, 30767 flow [2024-02-19 14:57:05,610 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 14:57:05,611 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:57:05,611 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:57:05,625 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-02-19 14:57:05,824 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:57:05,824 INFO L432 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 14:57:05,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:57:05,825 INFO L85 PathProgramCache]: Analyzing trace with hash 294826091, now seen corresponding path program 1 times [2024-02-19 14:57:05,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:57:05,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542075617] [2024-02-19 14:57:05,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:57:05,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:57:05,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:57:06,215 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-19 14:57:06,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:57:06,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542075617] [2024-02-19 14:57:06,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542075617] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:57:06,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [350081884] [2024-02-19 14:57:06,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:57:06,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:57:06,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:57:06,217 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 14:57:06,238 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-02-19 14:57:06,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:57:06,319 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 17 conjunts are in the unsatisfiable core [2024-02-19 14:57:06,321 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:57:06,430 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-02-19 14:57:06,441 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-19 14:57:06,441 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:57:06,491 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-19 14:57:06,491 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 16 [2024-02-19 14:57:06,521 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-19 14:57:06,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [350081884] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 14:57:06,521 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 14:57:06,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 5] total 16 [2024-02-19 14:57:06,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413151003] [2024-02-19 14:57:06,522 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 14:57:06,522 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-02-19 14:57:06,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:57:06,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-02-19 14:57:06,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2024-02-19 14:57:06,558 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-02-19 14:57:06,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 1377 transitions, 30767 flow. Second operand has 17 states, 17 states have (on average 11.235294117647058) internal successors, (191), 17 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 14:57:06,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:57:06,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-02-19 14:57:06,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:57:08,755 INFO L124 PetriNetUnfolderBase]: 7741/11115 cut-off events. [2024-02-19 14:57:08,755 INFO L125 PetriNetUnfolderBase]: For 50253/50253 co-relation queries the response was YES. [2024-02-19 14:57:08,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126036 conditions, 11115 events. 7741/11115 cut-off events. For 50253/50253 co-relation queries the response was YES. Maximal size of possible extension queue 416. Compared 58502 event pairs, 107 based on Foata normal form. 1/11114 useless extension candidates. Maximal degree in co-relation 120307. Up to 8955 conditions per place. [2024-02-19 14:57:08,854 INFO L140 encePairwiseOnDemand]: 23/35 looper letters, 1584 selfloop transitions, 443 changer transitions 57/2263 dead transitions. [2024-02-19 14:57:08,855 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 2263 transitions, 56066 flow [2024-02-19 14:57:08,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-02-19 14:57:08,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-02-19 14:57:08,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 271 transitions. [2024-02-19 14:57:08,857 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5161904761904762 [2024-02-19 14:57:08,858 INFO L308 CegarLoopForPetriNet]: 37 programPoint places, 119 predicate places. [2024-02-19 14:57:08,858 INFO L507 AbstractCegarLoop]: Abstraction has has 156 places, 2263 transitions, 56066 flow [2024-02-19 14:57:08,858 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 11.235294117647058) internal successors, (191), 17 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 14:57:08,858 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:57:08,858 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:57:08,873 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-02-19 14:57:09,064 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-02-19 14:57:09,064 INFO L432 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 14:57:09,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:57:09,065 INFO L85 PathProgramCache]: Analyzing trace with hash -1821149062, now seen corresponding path program 1 times [2024-02-19 14:57:09,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:57:09,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640786518] [2024-02-19 14:57:09,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:57:09,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:57:09,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:57:09,577 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:57:09,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:57:09,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640786518] [2024-02-19 14:57:09,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640786518] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:57:09,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1666574608] [2024-02-19 14:57:09,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:57:09,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:57:09,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:57:09,579 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 14:57:09,604 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-02-19 14:57:09,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:57:09,686 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 34 conjunts are in the unsatisfiable core [2024-02-19 14:57:09,690 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:57:09,720 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-02-19 14:57:09,963 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-02-19 14:57:09,972 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:57:09,973 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:57:10,463 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 29 [2024-02-19 14:57:10,473 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-19 14:57:10,474 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 62 [2024-02-19 14:57:10,560 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:57:10,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1666574608] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 14:57:10,560 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 14:57:10,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 24 [2024-02-19 14:57:10,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707943984] [2024-02-19 14:57:10,561 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 14:57:10,561 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-02-19 14:57:10,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:57:10,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-02-19 14:57:10,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=512, Unknown=0, NotChecked=0, Total=600 [2024-02-19 14:57:10,753 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35 [2024-02-19 14:57:10,754 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 2263 transitions, 56066 flow. Second operand has 25 states, 25 states have (on average 9.44) internal successors, (236), 25 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 14:57:10,754 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:57:10,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35 [2024-02-19 14:57:10,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:57:16,298 INFO L124 PetriNetUnfolderBase]: 10311/14784 cut-off events. [2024-02-19 14:57:16,298 INFO L125 PetriNetUnfolderBase]: For 86764/86764 co-relation queries the response was YES. [2024-02-19 14:57:16,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179945 conditions, 14784 events. 10311/14784 cut-off events. For 86764/86764 co-relation queries the response was YES. Maximal size of possible extension queue 549. Compared 80774 event pairs, 79 based on Foata normal form. 1/14782 useless extension candidates. Maximal degree in co-relation 150643. Up to 11818 conditions per place. [2024-02-19 14:57:16,450 INFO L140 encePairwiseOnDemand]: 21/35 looper letters, 2937 selfloop transitions, 604 changer transitions 76/3770 dead transitions. [2024-02-19 14:57:16,451 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 3770 transitions, 101058 flow [2024-02-19 14:57:16,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-02-19 14:57:16,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-02-19 14:57:16,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 344 transitions. [2024-02-19 14:57:16,453 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.46802721088435373 [2024-02-19 14:57:16,453 INFO L308 CegarLoopForPetriNet]: 37 programPoint places, 139 predicate places. [2024-02-19 14:57:16,454 INFO L507 AbstractCegarLoop]: Abstraction has has 176 places, 3770 transitions, 101058 flow [2024-02-19 14:57:16,454 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 9.44) internal successors, (236), 25 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 14:57:16,454 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:57:16,454 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:57:16,465 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-02-19 14:57:16,654 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-02-19 14:57:16,655 INFO L432 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 14:57:16,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:57:16,655 INFO L85 PathProgramCache]: Analyzing trace with hash 492040476, now seen corresponding path program 2 times [2024-02-19 14:57:16,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:57:16,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615503831] [2024-02-19 14:57:16,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:57:16,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:57:16,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:57:17,180 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:57:17,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:57:17,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615503831] [2024-02-19 14:57:17,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615503831] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:57:17,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [356459599] [2024-02-19 14:57:17,181 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-19 14:57:17,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:57:17,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:57:17,182 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 14:57:17,203 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-02-19 14:57:17,289 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-19 14:57:17,289 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 14:57:17,290 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 37 conjunts are in the unsatisfiable core [2024-02-19 14:57:17,292 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:57:17,320 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-02-19 14:57:17,565 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-19 14:57:17,566 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 15 [2024-02-19 14:57:17,643 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:57:17,644 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:57:18,089 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 29 [2024-02-19 14:57:18,102 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-19 14:57:18,103 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 62 [2024-02-19 14:57:18,180 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:57:18,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [356459599] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 14:57:18,181 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 14:57:18,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 12] total 30 [2024-02-19 14:57:18,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216464414] [2024-02-19 14:57:18,182 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 14:57:18,182 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-02-19 14:57:18,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:57:18,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-02-19 14:57:18,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=789, Unknown=0, NotChecked=0, Total=930 [2024-02-19 14:57:18,242 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 35 [2024-02-19 14:57:18,242 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 3770 transitions, 101058 flow. Second operand has 31 states, 31 states have (on average 6.225806451612903) internal successors, (193), 31 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 14:57:18,242 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:57:18,242 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 35 [2024-02-19 14:57:18,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:57:33,310 INFO L124 PetriNetUnfolderBase]: 15621/22358 cut-off events. [2024-02-19 14:57:33,310 INFO L125 PetriNetUnfolderBase]: For 137728/137728 co-relation queries the response was YES. [2024-02-19 14:57:33,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 297559 conditions, 22358 events. 15621/22358 cut-off events. For 137728/137728 co-relation queries the response was YES. Maximal size of possible extension queue 879. Compared 130294 event pairs, 47 based on Foata normal form. 3/22358 useless extension candidates. Maximal degree in co-relation 253165. Up to 18371 conditions per place. [2024-02-19 14:57:33,607 INFO L140 encePairwiseOnDemand]: 19/35 looper letters, 4998 selfloop transitions, 1628 changer transitions 104/6731 dead transitions. [2024-02-19 14:57:33,608 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 6731 transitions, 190998 flow [2024-02-19 14:57:33,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2024-02-19 14:57:33,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2024-02-19 14:57:33,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 766 transitions. [2024-02-19 14:57:33,611 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.3587822014051522 [2024-02-19 14:57:33,612 INFO L308 CegarLoopForPetriNet]: 37 programPoint places, 199 predicate places. [2024-02-19 14:57:33,612 INFO L507 AbstractCegarLoop]: Abstraction has has 236 places, 6731 transitions, 190998 flow [2024-02-19 14:57:33,612 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 6.225806451612903) internal successors, (193), 31 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 14:57:33,612 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:57:33,613 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:57:33,624 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-02-19 14:57:33,820 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-02-19 14:57:33,820 INFO L432 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 14:57:33,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:57:33,821 INFO L85 PathProgramCache]: Analyzing trace with hash 1894404184, now seen corresponding path program 3 times [2024-02-19 14:57:33,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:57:33,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402712995] [2024-02-19 14:57:33,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:57:33,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:57:33,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:57:34,306 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:57:34,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:57:34,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402712995] [2024-02-19 14:57:34,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402712995] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:57:34,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1107789072] [2024-02-19 14:57:34,307 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-02-19 14:57:34,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:57:34,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:57:34,312 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 14:57:34,313 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-02-19 14:57:34,427 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-02-19 14:57:34,427 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 14:57:34,428 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 34 conjunts are in the unsatisfiable core [2024-02-19 14:57:34,430 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:57:34,460 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-02-19 14:57:34,629 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-02-19 14:57:34,636 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:57:34,636 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:57:34,912 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-19 14:57:34,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1107789072] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 14:57:34,912 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 14:57:34,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 8] total 23 [2024-02-19 14:57:34,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382927771] [2024-02-19 14:57:34,913 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 14:57:34,913 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-02-19 14:57:34,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:57:34,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-02-19 14:57:34,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=456, Unknown=0, NotChecked=0, Total=552 [2024-02-19 14:57:35,017 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 35 [2024-02-19 14:57:35,018 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 6731 transitions, 190998 flow. Second operand has 24 states, 24 states have (on average 7.583333333333333) internal successors, (182), 24 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 14:57:35,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:57:35,018 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 35 [2024-02-19 14:57:35,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:58:06,877 INFO L124 PetriNetUnfolderBase]: 20281/29049 cut-off events. [2024-02-19 14:58:06,877 INFO L125 PetriNetUnfolderBase]: For 220900/220900 co-relation queries the response was YES. [2024-02-19 14:58:06,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 415786 conditions, 29049 events. 20281/29049 cut-off events. For 220900/220900 co-relation queries the response was YES. Maximal size of possible extension queue 1124. Compared 176027 event pairs, 45 based on Foata normal form. 2/29048 useless extension candidates. Maximal degree in co-relation 347719. Up to 24275 conditions per place. [2024-02-19 14:58:07,256 INFO L140 encePairwiseOnDemand]: 18/35 looper letters, 6701 selfloop transitions, 2010 changer transitions 160/9164 dead transitions. [2024-02-19 14:58:07,256 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 9164 transitions, 280281 flow [2024-02-19 14:58:07,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-02-19 14:58:07,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2024-02-19 14:58:07,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 502 transitions. [2024-02-19 14:58:07,258 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.38764478764478766 [2024-02-19 14:58:07,259 INFO L308 CegarLoopForPetriNet]: 37 programPoint places, 234 predicate places. [2024-02-19 14:58:07,259 INFO L507 AbstractCegarLoop]: Abstraction has has 271 places, 9164 transitions, 280281 flow [2024-02-19 14:58:07,259 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 7.583333333333333) internal successors, (182), 24 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 14:58:07,259 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:58:07,259 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:58:07,271 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-02-19 14:58:07,464 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-02-19 14:58:07,465 INFO L432 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 14:58:07,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:58:07,465 INFO L85 PathProgramCache]: Analyzing trace with hash -1072003058, now seen corresponding path program 4 times [2024-02-19 14:58:07,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:58:07,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405607259] [2024-02-19 14:58:07,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:58:07,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:58:07,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:58:07,931 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:58:07,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:58:07,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405607259] [2024-02-19 14:58:07,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405607259] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:58:07,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1683046722] [2024-02-19 14:58:07,932 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-02-19 14:58:07,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:58:07,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:58:07,933 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 14:58:07,936 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-02-19 14:58:08,059 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-02-19 14:58:08,060 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 14:58:08,061 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 32 conjunts are in the unsatisfiable core [2024-02-19 14:58:08,063 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:58:08,086 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-02-19 14:58:08,277 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-02-19 14:58:08,280 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:58:08,280 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:58:08,414 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-19 14:58:08,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1683046722] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 14:58:08,414 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 14:58:08,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 8] total 24 [2024-02-19 14:58:08,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768215272] [2024-02-19 14:58:08,414 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 14:58:08,415 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-02-19 14:58:08,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:58:08,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-02-19 14:58:08,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=500, Unknown=0, NotChecked=0, Total=600 [2024-02-19 14:58:08,509 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 35 [2024-02-19 14:58:08,509 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 9164 transitions, 280281 flow. Second operand has 25 states, 25 states have (on average 7.8) internal successors, (195), 25 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 14:58:08,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:58:08,510 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 35 [2024-02-19 14:58:08,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:59:02,171 INFO L124 PetriNetUnfolderBase]: 21609/30960 cut-off events. [2024-02-19 14:59:02,171 INFO L125 PetriNetUnfolderBase]: For 257842/257842 co-relation queries the response was YES. [2024-02-19 14:59:02,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 472523 conditions, 30960 events. 21609/30960 cut-off events. For 257842/257842 co-relation queries the response was YES. Maximal size of possible extension queue 1237. Compared 190120 event pairs, 55 based on Foata normal form. 1/30958 useless extension candidates. Maximal degree in co-relation 398322. Up to 25922 conditions per place. [2024-02-19 14:59:02,684 INFO L140 encePairwiseOnDemand]: 18/35 looper letters, 7567 selfloop transitions, 1895 changer transitions 162/9917 dead transitions. [2024-02-19 14:59:02,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 9917 transitions, 323187 flow [2024-02-19 14:59:02,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-02-19 14:59:02,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2024-02-19 14:59:02,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 496 transitions. [2024-02-19 14:59:02,686 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.39365079365079364 [2024-02-19 14:59:02,687 INFO L308 CegarLoopForPetriNet]: 37 programPoint places, 269 predicate places. [2024-02-19 14:59:02,687 INFO L507 AbstractCegarLoop]: Abstraction has has 306 places, 9917 transitions, 323187 flow [2024-02-19 14:59:02,688 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 7.8) internal successors, (195), 25 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 14:59:02,688 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:59:02,688 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:59:02,699 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-02-19 14:59:02,888 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-02-19 14:59:02,889 INFO L432 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 14:59:02,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:59:02,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1035786953, now seen corresponding path program 2 times [2024-02-19 14:59:02,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:59:02,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804463195] [2024-02-19 14:59:02,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:59:02,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:59:02,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:59:03,188 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-19 14:59:03,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:59:03,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804463195] [2024-02-19 14:59:03,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804463195] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:59:03,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [75738614] [2024-02-19 14:59:03,189 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-19 14:59:03,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:59:03,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:59:03,191 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 14:59:03,192 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-02-19 14:59:03,320 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-19 14:59:03,321 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 14:59:03,322 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 23 conjunts are in the unsatisfiable core [2024-02-19 14:59:03,323 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:59:03,396 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-02-19 14:59:03,406 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-19 14:59:03,407 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:59:03,434 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-19 14:59:03,436 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 16 [2024-02-19 14:59:03,470 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-19 14:59:03,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [75738614] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 14:59:03,470 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 14:59:03,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 5] total 13 [2024-02-19 14:59:03,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008046275] [2024-02-19 14:59:03,471 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 14:59:03,471 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-02-19 14:59:03,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:59:03,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-02-19 14:59:03,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2024-02-19 14:59:03,514 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-02-19 14:59:03,514 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 9917 transitions, 323187 flow. Second operand has 14 states, 14 states have (on average 11.0) internal successors, (154), 14 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 14:59:03,514 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:59:03,514 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-02-19 14:59:03,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:59:57,501 INFO L124 PetriNetUnfolderBase]: 23157/33165 cut-off events. [2024-02-19 14:59:57,502 INFO L125 PetriNetUnfolderBase]: For 355945/355945 co-relation queries the response was YES. [2024-02-19 14:59:57,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 532483 conditions, 33165 events. 23157/33165 cut-off events. For 355945/355945 co-relation queries the response was YES. Maximal size of possible extension queue 1341. Compared 205933 event pairs, 45 based on Foata normal form. 1/33163 useless extension candidates. Maximal degree in co-relation 452628. Up to 27791 conditions per place. [2024-02-19 14:59:57,932 INFO L140 encePairwiseOnDemand]: 23/35 looper letters, 8772 selfloop transitions, 764 changer transitions 166/10639 dead transitions. [2024-02-19 14:59:57,932 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 10639 transitions, 367318 flow [2024-02-19 14:59:57,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-02-19 14:59:57,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-02-19 14:59:57,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 228 transitions. [2024-02-19 14:59:57,933 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5010989010989011 [2024-02-19 14:59:57,934 INFO L308 CegarLoopForPetriNet]: 37 programPoint places, 281 predicate places. [2024-02-19 14:59:57,934 INFO L507 AbstractCegarLoop]: Abstraction has has 318 places, 10639 transitions, 367318 flow [2024-02-19 14:59:57,934 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 11.0) internal successors, (154), 14 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 14:59:57,934 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:59:57,934 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:59:57,946 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-02-19 14:59:58,135 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-02-19 14:59:58,135 INFO L432 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 14:59:58,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:59:58,136 INFO L85 PathProgramCache]: Analyzing trace with hash -108885002, now seen corresponding path program 5 times [2024-02-19 14:59:58,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:59:58,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79979707] [2024-02-19 14:59:58,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:59:58,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:59:58,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:59:58,524 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:59:58,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:59:58,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79979707] [2024-02-19 14:59:58,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79979707] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:59:58,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [160571951] [2024-02-19 14:59:58,526 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-02-19 14:59:58,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:59:58,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:59:58,527 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 14:59:58,528 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-02-19 14:59:58,658 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-19 14:59:58,658 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 14:59:58,660 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 34 conjunts are in the unsatisfiable core [2024-02-19 14:59:58,661 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:59:58,684 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-02-19 14:59:58,896 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-02-19 14:59:58,906 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:59:58,907 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:59:59,074 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-19 14:59:59,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [160571951] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 14:59:59,075 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 14:59:59,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 8] total 23 [2024-02-19 14:59:59,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249995788] [2024-02-19 14:59:59,075 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 14:59:59,075 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-02-19 14:59:59,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:59:59,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-02-19 14:59:59,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=461, Unknown=0, NotChecked=0, Total=552 [2024-02-19 14:59:59,137 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 35 [2024-02-19 14:59:59,137 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 10639 transitions, 367318 flow. Second operand has 24 states, 24 states have (on average 7.458333333333333) internal successors, (179), 24 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 14:59:59,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:59:59,137 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 35 [2024-02-19 14:59:59,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:01:29,099 INFO L124 PetriNetUnfolderBase]: 25597/36759 cut-off events. [2024-02-19 15:01:29,099 INFO L125 PetriNetUnfolderBase]: For 427044/427044 co-relation queries the response was YES. [2024-02-19 15:01:29,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 625725 conditions, 36759 events. 25597/36759 cut-off events. For 427044/427044 co-relation queries the response was YES. Maximal size of possible extension queue 1533. Compared 233612 event pairs, 61 based on Foata normal form. 1/36757 useless extension candidates. Maximal degree in co-relation 534867. Up to 30943 conditions per place. [2024-02-19 15:01:29,667 INFO L140 encePairwiseOnDemand]: 17/35 looper letters, 8757 selfloop transitions, 2911 changer transitions 177/12138 dead transitions. [2024-02-19 15:01:29,667 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 12138 transitions, 443876 flow [2024-02-19 15:01:29,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-02-19 15:01:29,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2024-02-19 15:01:29,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 658 transitions. [2024-02-19 15:01:29,669 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.39166666666666666 [2024-02-19 15:01:29,670 INFO L308 CegarLoopForPetriNet]: 37 programPoint places, 328 predicate places. [2024-02-19 15:01:29,670 INFO L507 AbstractCegarLoop]: Abstraction has has 365 places, 12138 transitions, 443876 flow [2024-02-19 15:01:29,670 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 7.458333333333333) internal successors, (179), 24 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 15:01:29,670 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:01:29,671 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 15:01:29,684 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-02-19 15:01:29,880 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:01:29,880 INFO L432 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 15:01:29,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:01:29,881 INFO L85 PathProgramCache]: Analyzing trace with hash -79478878, now seen corresponding path program 6 times [2024-02-19 15:01:29,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:01:29,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470048273] [2024-02-19 15:01:29,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:01:29,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:01:29,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:01:30,263 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:01:30,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:01:30,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470048273] [2024-02-19 15:01:30,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470048273] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 15:01:30,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1698732247] [2024-02-19 15:01:30,264 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-02-19 15:01:30,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:01:30,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:01:30,265 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 15:01:30,268 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-02-19 15:01:30,393 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-02-19 15:01:30,393 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 15:01:30,395 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 34 conjunts are in the unsatisfiable core [2024-02-19 15:01:30,398 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 15:01:30,423 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-02-19 15:01:30,576 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-02-19 15:01:30,584 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:01:30,584 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 15:01:30,713 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-19 15:01:30,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1698732247] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 15:01:30,714 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 15:01:30,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 8] total 22 [2024-02-19 15:01:30,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258838672] [2024-02-19 15:01:30,714 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 15:01:30,715 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-02-19 15:01:30,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:01:30,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-02-19 15:01:30,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=434, Unknown=0, NotChecked=0, Total=506 [2024-02-19 15:01:30,811 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 35 [2024-02-19 15:01:30,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 12138 transitions, 443876 flow. Second operand has 23 states, 23 states have (on average 7.608695652173913) internal successors, (175), 23 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 15:01:30,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:01:30,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 35 [2024-02-19 15:01:30,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:03:44,167 INFO L124 PetriNetUnfolderBase]: 30290/43445 cut-off events. [2024-02-19 15:03:44,167 INFO L125 PetriNetUnfolderBase]: For 593212/593212 co-relation queries the response was YES. [2024-02-19 15:03:44,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 781904 conditions, 43445 events. 30290/43445 cut-off events. For 593212/593212 co-relation queries the response was YES. Maximal size of possible extension queue 1830. Compared 282281 event pairs, 35 based on Foata normal form. 1/43443 useless extension candidates. Maximal degree in co-relation 657692. Up to 36853 conditions per place. [2024-02-19 15:03:44,832 INFO L140 encePairwiseOnDemand]: 18/35 looper letters, 10546 selfloop transitions, 3799 changer transitions 249/14887 dead transitions. [2024-02-19 15:03:44,832 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 14887 transitions, 575395 flow [2024-02-19 15:03:44,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-02-19 15:03:44,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2024-02-19 15:03:44,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 612 transitions. [2024-02-19 15:03:44,834 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.36428571428571427 [2024-02-19 15:03:44,835 INFO L308 CegarLoopForPetriNet]: 37 programPoint places, 375 predicate places. [2024-02-19 15:03:44,835 INFO L507 AbstractCegarLoop]: Abstraction has has 412 places, 14887 transitions, 575395 flow [2024-02-19 15:03:44,835 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 7.608695652173913) internal successors, (175), 23 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 15:03:44,835 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:03:44,835 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 15:03:44,851 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-02-19 15:03:45,048 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:03:45,049 INFO L432 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 15:03:45,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:03:45,049 INFO L85 PathProgramCache]: Analyzing trace with hash -788334695, now seen corresponding path program 3 times [2024-02-19 15:03:45,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:03:45,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743765383] [2024-02-19 15:03:45,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:03:45,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:03:45,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:03:45,304 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-19 15:03:45,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:03:45,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743765383] [2024-02-19 15:03:45,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743765383] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 15:03:45,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1907506325] [2024-02-19 15:03:45,305 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-02-19 15:03:45,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:03:45,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:03:45,309 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 15:03:45,316 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-02-19 15:03:45,701 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-02-19 15:03:45,701 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 15:03:45,703 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 23 conjunts are in the unsatisfiable core [2024-02-19 15:03:45,704 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 15:03:45,796 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-02-19 15:03:45,809 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-19 15:03:45,810 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 15:03:45,862 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-19 15:03:45,863 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 16 [2024-02-19 15:03:45,876 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-19 15:03:45,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1907506325] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 15:03:45,876 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 15:03:45,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 5] total 13 [2024-02-19 15:03:45,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843488707] [2024-02-19 15:03:45,877 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 15:03:45,877 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-02-19 15:03:45,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:03:45,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-02-19 15:03:45,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2024-02-19 15:03:45,906 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-02-19 15:03:45,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 14887 transitions, 575395 flow. Second operand has 14 states, 14 states have (on average 11.071428571428571) internal successors, (155), 14 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 15:03:45,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:03:45,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-02-19 15:03:45,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:06:42,387 INFO L124 PetriNetUnfolderBase]: 33828/48497 cut-off events. [2024-02-19 15:06:42,387 INFO L125 PetriNetUnfolderBase]: For 796796/796796 co-relation queries the response was YES. [2024-02-19 15:06:42,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 911210 conditions, 48497 events. 33828/48497 cut-off events. For 796796/796796 co-relation queries the response was YES. Maximal size of possible extension queue 2053. Compared 319056 event pairs, 33 based on Foata normal form. 1/48495 useless extension candidates. Maximal degree in co-relation 778764. Up to 41137 conditions per place. [2024-02-19 15:06:43,173 INFO L140 encePairwiseOnDemand]: 23/35 looper letters, 13909 selfloop transitions, 1265 changer transitions 257/16628 dead transitions. [2024-02-19 15:06:43,173 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 424 places, 16628 transitions, 676048 flow [2024-02-19 15:06:43,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-02-19 15:06:43,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-02-19 15:06:43,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 232 transitions. [2024-02-19 15:06:43,174 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5098901098901099 [2024-02-19 15:06:43,174 INFO L308 CegarLoopForPetriNet]: 37 programPoint places, 387 predicate places. [2024-02-19 15:06:43,174 INFO L507 AbstractCegarLoop]: Abstraction has has 424 places, 16628 transitions, 676048 flow [2024-02-19 15:06:43,175 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 11.071428571428571) internal successors, (155), 14 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 15:06:43,175 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:06:43,175 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 15:06:43,189 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-02-19 15:06:43,375 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:06:43,375 INFO L432 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 15:06:43,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:06:43,376 INFO L85 PathProgramCache]: Analyzing trace with hash 743157788, now seen corresponding path program 7 times [2024-02-19 15:06:43,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:06:43,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680818154] [2024-02-19 15:06:43,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:06:43,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:06:43,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:06:43,806 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:06:43,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:06:43,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680818154] [2024-02-19 15:06:43,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680818154] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 15:06:43,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2086015473] [2024-02-19 15:06:43,807 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-02-19 15:06:43,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:06:43,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:06:43,809 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 15:06:43,810 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-02-19 15:06:43,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:06:43,944 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 34 conjunts are in the unsatisfiable core [2024-02-19 15:06:43,945 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 15:06:43,967 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-02-19 15:06:44,151 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-02-19 15:06:44,161 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:06:44,161 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 15:06:44,317 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-19 15:06:44,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2086015473] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 15:06:44,317 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 15:06:44,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 8] total 22 [2024-02-19 15:06:44,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428937430] [2024-02-19 15:06:44,318 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 15:06:44,318 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-02-19 15:06:44,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:06:44,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-02-19 15:06:44,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=431, Unknown=0, NotChecked=0, Total=506 [2024-02-19 15:06:44,565 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 35 [2024-02-19 15:06:44,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 16628 transitions, 676048 flow. Second operand has 23 states, 23 states have (on average 7.565217391304348) internal successors, (174), 23 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 15:06:44,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:06:44,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 35 [2024-02-19 15:06:44,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Killed by 15