./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-nonblocking-cntr-alt.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4f9af400 extending candidate: java ['java'] extending candidate: /usr/bin/java ['java', '/usr/bin/java'] extending candidate: /opt/oracle-jdk-bin-*/bin/java ['java', '/usr/bin/java'] extending candidate: /opt/openjdk-*/bin/java ['java', '/usr/bin/java'] extending candidate: /usr/lib/jvm/java-*-openjdk-amd64/bin/java ['java', '/usr/bin/java', '/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java', '/usr/lib/jvm/java-17-openjdk-amd64/bin/java', '/usr/lib/jvm/java-11-openjdk-amd64/bin/java', '/usr/lib/jvm/java-1.17.0-openjdk-amd64/bin/java'] ['/root/.sdkman/candidates/java/21.0.5-tem/bin/java', '-Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config', '-Xmx15G', '-Xms4m', '-jar', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar', '-data', '@noDefault', '-ultimatedata', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data', '-tc', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml', '-i', '../sv-benchmarks/c/weaver/popl20-nonblocking-cntr-alt.wvr.c', '-s', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf', '--cacsl2boogietranslator.entry.function', 'main', '--witnessprinter.witness.directory', '/storage/repos/ultimate-jdk21/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())) )\n\n', '--witnessprinter.graph.data.producer', 'Automizer', '--witnessprinter.graph.data.architecture', '32bit', '--witnessprinter.graph.data.programhash', '0ead2366baa94ec77674f75cd829f45857f5651e204e91d33a749a2af2868461'] Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-nonblocking-cntr-alt.wvr.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/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 0ead2366baa94ec77674f75cd829f45857f5651e204e91d33a749a2af2868461 --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-07 11:30:56,768 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-07 11:30:56,852 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-07 11:30:56,857 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-07 11:30:56,857 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-07 11:30:56,876 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-07 11:30:56,877 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-07 11:30:56,877 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-07 11:30:56,877 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-07 11:30:56,878 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-07 11:30:56,878 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-07 11:30:56,878 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-07 11:30:56,878 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-07 11:30:56,878 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-07 11:30:56,878 INFO L153 SettingsManager]: * Use SBE=true [2024-11-07 11:30:56,879 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-07 11:30:56,879 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-07 11:30:56,879 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-07 11:30:56,879 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-07 11:30:56,879 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-07 11:30:56,879 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-07 11:30:56,879 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-07 11:30:56,879 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-07 11:30:56,880 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-07 11:30:56,880 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-07 11:30:56,880 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-07 11:30:56,880 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-07 11:30:56,880 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-07 11:30:56,880 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-07 11:30:56,880 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-07 11:30:56,880 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-07 11:30:56,881 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-07 11:30:56,881 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 11:30:56,881 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-07 11:30:56,881 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-07 11:30:56,881 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-07 11:30:56,881 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-07 11:30:56,881 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-07 11:30:56,882 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-07 11:30:56,882 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-07 11:30:56,882 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-07 11:30:56,882 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-07 11:30:56,882 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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-jdk21/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 -> 0ead2366baa94ec77674f75cd829f45857f5651e204e91d33a749a2af2868461 [2024-11-07 11:30:57,188 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-07 11:30:57,197 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-07 11:30:57,201 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-07 11:30:57,203 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-07 11:30:57,203 INFO L274 PluginConnector]: CDTParser initialized [2024-11-07 11:30:57,204 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-nonblocking-cntr-alt.wvr.c [2024-11-07 11:30:58,591 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-07 11:30:58,806 INFO L384 CDTParser]: Found 1 translation units. [2024-11-07 11:30:58,807 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/popl20-nonblocking-cntr-alt.wvr.c [2024-11-07 11:30:58,813 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/c736a7d60/c5c7c923123d4d199ddf262934c9c80d/FLAG2969fe4bc [2024-11-07 11:30:58,833 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/c736a7d60/c5c7c923123d4d199ddf262934c9c80d [2024-11-07 11:30:58,836 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-07 11:30:58,838 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-07 11:30:58,840 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-07 11:30:58,841 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-07 11:30:58,844 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-07 11:30:58,845 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 11:30:58" (1/1) ... [2024-11-07 11:30:58,846 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64f4e5b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:30:58, skipping insertion in model container [2024-11-07 11:30:58,846 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 11:30:58" (1/1) ... [2024-11-07 11:30:58,858 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-07 11:30:59,010 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/popl20-nonblocking-cntr-alt.wvr.c[2124,2137] [2024-11-07 11:30:59,014 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 11:30:59,022 INFO L200 MainTranslator]: Completed pre-run [2024-11-07 11:30:59,042 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/popl20-nonblocking-cntr-alt.wvr.c[2124,2137] [2024-11-07 11:30:59,046 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 11:30:59,061 INFO L204 MainTranslator]: Completed translation [2024-11-07 11:30:59,062 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:30:59 WrapperNode [2024-11-07 11:30:59,063 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-07 11:30:59,064 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-07 11:30:59,065 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-07 11:30:59,065 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-07 11:30:59,070 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:30:59" (1/1) ... [2024-11-07 11:30:59,076 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:30:59" (1/1) ... [2024-11-07 11:30:59,090 INFO L138 Inliner]: procedures = 20, calls = 14, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 46 [2024-11-07 11:30:59,091 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-07 11:30:59,091 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-07 11:30:59,091 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-07 11:30:59,092 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-07 11:30:59,099 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:30:59" (1/1) ... [2024-11-07 11:30:59,100 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:30:59" (1/1) ... [2024-11-07 11:30:59,102 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:30:59" (1/1) ... [2024-11-07 11:30:59,116 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-07 11:30:59,119 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:30:59" (1/1) ... [2024-11-07 11:30:59,120 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:30:59" (1/1) ... [2024-11-07 11:30:59,123 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:30:59" (1/1) ... [2024-11-07 11:30:59,129 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:30:59" (1/1) ... [2024-11-07 11:30:59,131 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:30:59" (1/1) ... [2024-11-07 11:30:59,132 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:30:59" (1/1) ... [2024-11-07 11:30:59,133 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-07 11:30:59,136 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-07 11:30:59,136 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-07 11:30:59,136 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-07 11:30:59,137 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:30:59" (1/1) ... [2024-11-07 11:30:59,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 11:30:59,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:30:59,176 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-07 11:30:59,181 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-07 11:30:59,202 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-07 11:30:59,202 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-07 11:30:59,203 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-07 11:30:59,204 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-07 11:30:59,205 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-07 11:30:59,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-07 11:30:59,205 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-07 11:30:59,205 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-07 11:30:59,205 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-07 11:30:59,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-07 11:30:59,207 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-07 11:30:59,288 INFO L238 CfgBuilder]: Building ICFG [2024-11-07 11:30:59,291 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-07 11:30:59,436 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-07 11:30:59,436 INFO L287 CfgBuilder]: Performing block encoding [2024-11-07 11:30:59,597 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-07 11:30:59,598 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-07 11:30:59,598 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 11:30:59 BoogieIcfgContainer [2024-11-07 11:30:59,598 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-07 11:30:59,601 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-07 11:30:59,602 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-07 11:30:59,606 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-07 11:30:59,607 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 11:30:58" (1/3) ... [2024-11-07 11:30:59,607 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31759b62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 11:30:59, skipping insertion in model container [2024-11-07 11:30:59,607 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:30:59" (2/3) ... [2024-11-07 11:30:59,608 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31759b62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 11:30:59, skipping insertion in model container [2024-11-07 11:30:59,609 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 11:30:59" (3/3) ... [2024-11-07 11:30:59,610 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-nonblocking-cntr-alt.wvr.c [2024-11-07 11:30:59,624 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-07 11:30:59,625 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-07 11:30:59,626 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-07 11:30:59,675 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-07 11:30:59,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 26 places, 21 transitions, 56 flow [2024-11-07 11:30:59,733 INFO L124 PetriNetUnfolderBase]: 2/19 cut-off events. [2024-11-07 11:30:59,735 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-07 11:30:59,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28 conditions, 19 events. 2/19 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 18 event pairs, 0 based on Foata normal form. 0/16 useless extension candidates. Maximal degree in co-relation 14. Up to 2 conditions per place. [2024-11-07 11:30:59,742 INFO L82 GeneralOperation]: Start removeDead. Operand has 26 places, 21 transitions, 56 flow [2024-11-07 11:30:59,745 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 23 places, 18 transitions, 48 flow [2024-11-07 11:30:59,758 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 11:30:59,769 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@57018252, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 11:30:59,773 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-11-07 11:30:59,808 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-07 11:30:59,809 INFO L124 PetriNetUnfolderBase]: 2/17 cut-off events. [2024-11-07 11:30:59,809 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-07 11:30:59,809 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:30:59,810 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:30:59,810 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:30:59,814 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:30:59,815 INFO L85 PathProgramCache]: Analyzing trace with hash 1126928125, now seen corresponding path program 1 times [2024-11-07 11:30:59,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:30:59,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953645466] [2024-11-07 11:30:59,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:30:59,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:30:59,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:31:00,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:31:00,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:31:00,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953645466] [2024-11-07 11:31:00,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953645466] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:31:00,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:31:00,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 11:31:00,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948797944] [2024-11-07 11:31:00,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:31:00,136 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 11:31:00,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:31:00,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 11:31:00,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-07 11:31:00,176 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 21 [2024-11-07 11:31:00,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 18 transitions, 48 flow. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:31:00,179 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:31:00,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 21 [2024-11-07 11:31:00,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:31:00,293 INFO L124 PetriNetUnfolderBase]: 61/128 cut-off events. [2024-11-07 11:31:00,293 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2024-11-07 11:31:00,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 255 conditions, 128 events. 61/128 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 381 event pairs, 31 based on Foata normal form. 9/136 useless extension candidates. Maximal degree in co-relation 218. Up to 86 conditions per place. [2024-11-07 11:31:00,299 INFO L140 encePairwiseOnDemand]: 17/21 looper letters, 19 selfloop transitions, 3 changer transitions 0/25 dead transitions. [2024-11-07 11:31:00,299 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 25 transitions, 109 flow [2024-11-07 11:31:00,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 11:31:00,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 11:31:00,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 43 transitions. [2024-11-07 11:31:00,312 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5119047619047619 [2024-11-07 11:31:00,314 INFO L175 Difference]: Start difference. First operand has 23 places, 18 transitions, 48 flow. Second operand 4 states and 43 transitions. [2024-11-07 11:31:00,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 25 transitions, 109 flow [2024-11-07 11:31:00,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 25 transitions, 99 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-07 11:31:00,322 INFO L231 Difference]: Finished difference. Result has 23 places, 19 transitions, 54 flow [2024-11-07 11:31:00,325 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=54, PETRI_PLACES=23, PETRI_TRANSITIONS=19} [2024-11-07 11:31:00,330 INFO L277 CegarLoopForPetriNet]: 23 programPoint places, 0 predicate places. [2024-11-07 11:31:00,331 INFO L471 AbstractCegarLoop]: Abstraction has has 23 places, 19 transitions, 54 flow [2024-11-07 11:31:00,332 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:31:00,332 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:31:00,332 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:31:00,332 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-07 11:31:00,332 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:31:00,333 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:31:00,334 INFO L85 PathProgramCache]: Analyzing trace with hash -1437000289, now seen corresponding path program 1 times [2024-11-07 11:31:00,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:31:00,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430786333] [2024-11-07 11:31:00,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:31:00,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:31:00,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:31:00,494 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 11:31:00,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:31:00,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430786333] [2024-11-07 11:31:00,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430786333] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:31:00,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:31:00,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 11:31:00,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460378755] [2024-11-07 11:31:00,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:31:00,496 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 11:31:00,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:31:00,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 11:31:00,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-07 11:31:00,501 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 21 [2024-11-07 11:31:00,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 19 transitions, 54 flow. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:31:00,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:31:00,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 21 [2024-11-07 11:31:00,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:31:00,600 INFO L124 PetriNetUnfolderBase]: 89/179 cut-off events. [2024-11-07 11:31:00,600 INFO L125 PetriNetUnfolderBase]: For 67/67 co-relation queries the response was YES. [2024-11-07 11:31:00,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 412 conditions, 179 events. 89/179 cut-off events. For 67/67 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 598 event pairs, 37 based on Foata normal form. 10/188 useless extension candidates. Maximal degree in co-relation 104. Up to 108 conditions per place. [2024-11-07 11:31:00,606 INFO L140 encePairwiseOnDemand]: 17/21 looper letters, 22 selfloop transitions, 3 changer transitions 0/28 dead transitions. [2024-11-07 11:31:00,608 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 28 transitions, 133 flow [2024-11-07 11:31:00,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 11:31:00,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 11:31:00,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 44 transitions. [2024-11-07 11:31:00,610 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5238095238095238 [2024-11-07 11:31:00,610 INFO L175 Difference]: Start difference. First operand has 23 places, 19 transitions, 54 flow. Second operand 4 states and 44 transitions. [2024-11-07 11:31:00,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 28 transitions, 133 flow [2024-11-07 11:31:00,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 28 transitions, 127 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-07 11:31:00,612 INFO L231 Difference]: Finished difference. Result has 25 places, 20 transitions, 64 flow [2024-11-07 11:31:00,612 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=64, PETRI_PLACES=25, PETRI_TRANSITIONS=20} [2024-11-07 11:31:00,613 INFO L277 CegarLoopForPetriNet]: 23 programPoint places, 2 predicate places. [2024-11-07 11:31:00,613 INFO L471 AbstractCegarLoop]: Abstraction has has 25 places, 20 transitions, 64 flow [2024-11-07 11:31:00,613 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:31:00,613 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:31:00,613 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:31:00,614 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-07 11:31:00,614 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:31:00,614 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:31:00,614 INFO L85 PathProgramCache]: Analyzing trace with hash 1087690981, now seen corresponding path program 1 times [2024-11-07 11:31:00,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:31:00,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163158423] [2024-11-07 11:31:00,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:31:00,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:31:00,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:31:01,181 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:31:01,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:31:01,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163158423] [2024-11-07 11:31:01,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163158423] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:31:01,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1935824663] [2024-11-07 11:31:01,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:31:01,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:31:01,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:31:01,185 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 11:31:01,186 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-07 11:31:01,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:31:01,249 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-07 11:31:01,253 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:31:01,588 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:31:01,588 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:31:02,199 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:31:02,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1935824663] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:31:02,199 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:31:02,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2024-11-07 11:31:02,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170943534] [2024-11-07 11:31:02,199 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:31:02,200 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-07 11:31:02,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:31:02,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-07 11:31:02,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=408, Unknown=0, NotChecked=0, Total=552 [2024-11-07 11:31:02,226 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2024-11-07 11:31:02,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 20 transitions, 64 flow. Second operand has 24 states, 24 states have (on average 4.791666666666667) internal successors, (115), 24 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:31:02,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:31:02,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2024-11-07 11:31:02,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:31:03,260 INFO L124 PetriNetUnfolderBase]: 387/665 cut-off events. [2024-11-07 11:31:03,260 INFO L125 PetriNetUnfolderBase]: For 193/193 co-relation queries the response was YES. [2024-11-07 11:31:03,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1649 conditions, 665 events. 387/665 cut-off events. For 193/193 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2625 event pairs, 23 based on Foata normal form. 14/679 useless extension candidates. Maximal degree in co-relation 595. Up to 218 conditions per place. [2024-11-07 11:31:03,269 INFO L140 encePairwiseOnDemand]: 9/21 looper letters, 74 selfloop transitions, 53 changer transitions 15/143 dead transitions. [2024-11-07 11:31:03,269 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 143 transitions, 708 flow [2024-11-07 11:31:03,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-07 11:31:03,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-11-07 11:31:03,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 215 transitions. [2024-11-07 11:31:03,273 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39377289377289376 [2024-11-07 11:31:03,273 INFO L175 Difference]: Start difference. First operand has 25 places, 20 transitions, 64 flow. Second operand 26 states and 215 transitions. [2024-11-07 11:31:03,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 143 transitions, 708 flow [2024-11-07 11:31:03,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 143 transitions, 696 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-07 11:31:03,279 INFO L231 Difference]: Finished difference. Result has 65 places, 76 transitions, 504 flow [2024-11-07 11:31:03,279 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=504, PETRI_PLACES=65, PETRI_TRANSITIONS=76} [2024-11-07 11:31:03,280 INFO L277 CegarLoopForPetriNet]: 23 programPoint places, 42 predicate places. [2024-11-07 11:31:03,280 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 76 transitions, 504 flow [2024-11-07 11:31:03,280 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.791666666666667) internal successors, (115), 24 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:31:03,280 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:31:03,280 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:31:03,299 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-07 11:31:03,484 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:31:03,485 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:31:03,485 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:31:03,485 INFO L85 PathProgramCache]: Analyzing trace with hash -1244966769, now seen corresponding path program 2 times [2024-11-07 11:31:03,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:31:03,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604134143] [2024-11-07 11:31:03,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:31:03,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:31:03,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:31:03,782 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:31:03,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:31:03,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604134143] [2024-11-07 11:31:03,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604134143] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:31:03,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2129146199] [2024-11-07 11:31:03,782 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 11:31:03,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:31:03,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:31:03,786 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 11:31:03,788 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-07 11:31:03,846 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 11:31:03,846 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:31:03,847 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-07 11:31:03,848 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:31:04,062 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:31:04,062 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:31:04,509 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:31:04,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2129146199] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:31:04,510 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:31:04,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2024-11-07 11:31:04,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781302106] [2024-11-07 11:31:04,510 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:31:04,511 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-07 11:31:04,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:31:04,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-07 11:31:04,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=433, Unknown=0, NotChecked=0, Total=552 [2024-11-07 11:31:04,522 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2024-11-07 11:31:04,523 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 76 transitions, 504 flow. Second operand has 24 states, 24 states have (on average 4.833333333333333) internal successors, (116), 24 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:31:04,523 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:31:04,523 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2024-11-07 11:31:04,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:31:05,370 INFO L124 PetriNetUnfolderBase]: 573/1013 cut-off events. [2024-11-07 11:31:05,370 INFO L125 PetriNetUnfolderBase]: For 2645/2645 co-relation queries the response was YES. [2024-11-07 11:31:05,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4237 conditions, 1013 events. 573/1013 cut-off events. For 2645/2645 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 4701 event pairs, 35 based on Foata normal form. 2/1015 useless extension candidates. Maximal degree in co-relation 4191. Up to 290 conditions per place. [2024-11-07 11:31:05,380 INFO L140 encePairwiseOnDemand]: 10/21 looper letters, 104 selfloop transitions, 107 changer transitions 28/240 dead transitions. [2024-11-07 11:31:05,380 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 240 transitions, 1958 flow [2024-11-07 11:31:05,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-07 11:31:05,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-07 11:31:05,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 227 transitions. [2024-11-07 11:31:05,382 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4503968253968254 [2024-11-07 11:31:05,382 INFO L175 Difference]: Start difference. First operand has 65 places, 76 transitions, 504 flow. Second operand 24 states and 227 transitions. [2024-11-07 11:31:05,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 240 transitions, 1958 flow [2024-11-07 11:31:05,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 240 transitions, 1936 flow, removed 11 selfloop flow, removed 1 redundant places. [2024-11-07 11:31:05,414 INFO L231 Difference]: Finished difference. Result has 102 places, 145 transitions, 1431 flow [2024-11-07 11:31:05,414 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=490, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1431, PETRI_PLACES=102, PETRI_TRANSITIONS=145} [2024-11-07 11:31:05,416 INFO L277 CegarLoopForPetriNet]: 23 programPoint places, 79 predicate places. [2024-11-07 11:31:05,416 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 145 transitions, 1431 flow [2024-11-07 11:31:05,416 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.833333333333333) internal successors, (116), 24 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:31:05,416 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:31:05,416 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:31:05,433 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-07 11:31:05,620 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:31:05,621 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:31:05,622 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:31:05,622 INFO L85 PathProgramCache]: Analyzing trace with hash 253928195, now seen corresponding path program 3 times [2024-11-07 11:31:05,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:31:05,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904742282] [2024-11-07 11:31:05,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:31:05,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:31:05,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:31:05,859 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:31:05,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:31:05,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904742282] [2024-11-07 11:31:05,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904742282] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:31:05,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [782459130] [2024-11-07 11:31:05,860 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-07 11:31:05,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:31:05,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:31:05,862 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 11:31:05,864 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-07 11:31:05,906 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-07 11:31:05,906 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:31:05,907 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-07 11:31:05,908 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:31:06,124 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:31:06,126 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:31:06,572 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:31:06,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [782459130] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:31:06,572 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:31:06,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2024-11-07 11:31:06,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769055713] [2024-11-07 11:31:06,572 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:31:06,573 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-07 11:31:06,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:31:06,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-07 11:31:06,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=435, Unknown=0, NotChecked=0, Total=552 [2024-11-07 11:31:06,585 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2024-11-07 11:31:06,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 145 transitions, 1431 flow. Second operand has 24 states, 24 states have (on average 4.833333333333333) internal successors, (116), 24 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:31:06,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:31:06,585 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2024-11-07 11:31:06,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:31:07,704 INFO L124 PetriNetUnfolderBase]: 603/1072 cut-off events. [2024-11-07 11:31:07,704 INFO L125 PetriNetUnfolderBase]: For 5793/5793 co-relation queries the response was YES. [2024-11-07 11:31:07,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5843 conditions, 1072 events. 603/1072 cut-off events. For 5793/5793 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 5095 event pairs, 27 based on Foata normal form. 2/1074 useless extension candidates. Maximal degree in co-relation 5770. Up to 304 conditions per place. [2024-11-07 11:31:07,715 INFO L140 encePairwiseOnDemand]: 9/21 looper letters, 105 selfloop transitions, 139 changer transitions 21/266 dead transitions. [2024-11-07 11:31:07,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 266 transitions, 2879 flow [2024-11-07 11:31:07,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-07 11:31:07,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-11-07 11:31:07,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 254 transitions. [2024-11-07 11:31:07,718 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43197278911564624 [2024-11-07 11:31:07,718 INFO L175 Difference]: Start difference. First operand has 102 places, 145 transitions, 1431 flow. Second operand 28 states and 254 transitions. [2024-11-07 11:31:07,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 266 transitions, 2879 flow [2024-11-07 11:31:07,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 266 transitions, 2772 flow, removed 41 selfloop flow, removed 5 redundant places. [2024-11-07 11:31:07,753 INFO L231 Difference]: Finished difference. Result has 134 places, 177 transitions, 2184 flow [2024-11-07 11:31:07,753 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=1363, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=2184, PETRI_PLACES=134, PETRI_TRANSITIONS=177} [2024-11-07 11:31:07,754 INFO L277 CegarLoopForPetriNet]: 23 programPoint places, 111 predicate places. [2024-11-07 11:31:07,754 INFO L471 AbstractCegarLoop]: Abstraction has has 134 places, 177 transitions, 2184 flow [2024-11-07 11:31:07,754 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.833333333333333) internal successors, (116), 24 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:31:07,754 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:31:07,754 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:31:07,770 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-07 11:31:07,954 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:31:07,955 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:31:07,955 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:31:07,955 INFO L85 PathProgramCache]: Analyzing trace with hash 1106845699, now seen corresponding path program 4 times [2024-11-07 11:31:07,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:31:07,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718789616] [2024-11-07 11:31:07,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:31:07,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:31:07,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:31:08,156 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:31:08,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:31:08,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718789616] [2024-11-07 11:31:08,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718789616] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:31:08,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [403891158] [2024-11-07 11:31:08,157 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-07 11:31:08,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:31:08,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:31:08,159 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 11:31:08,166 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-07 11:31:08,211 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-07 11:31:08,212 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:31:08,212 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-07 11:31:08,213 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:31:08,379 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:31:08,379 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:31:08,760 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:31:08,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [403891158] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:31:08,760 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:31:08,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 10] total 23 [2024-11-07 11:31:08,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339149510] [2024-11-07 11:31:08,760 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:31:08,761 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-07 11:31:08,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:31:08,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-07 11:31:08,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=427, Unknown=0, NotChecked=0, Total=552 [2024-11-07 11:31:08,772 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2024-11-07 11:31:08,772 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 177 transitions, 2184 flow. Second operand has 24 states, 24 states have (on average 4.708333333333333) internal successors, (113), 24 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:31:08,772 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:31:08,772 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2024-11-07 11:31:08,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:31:10,393 INFO L124 PetriNetUnfolderBase]: 982/1749 cut-off events. [2024-11-07 11:31:10,394 INFO L125 PetriNetUnfolderBase]: For 14658/14658 co-relation queries the response was YES. [2024-11-07 11:31:10,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11089 conditions, 1749 events. 982/1749 cut-off events. For 14658/14658 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 9256 event pairs, 28 based on Foata normal form. 4/1753 useless extension candidates. Maximal degree in co-relation 10972. Up to 511 conditions per place. [2024-11-07 11:31:10,417 INFO L140 encePairwiseOnDemand]: 9/21 looper letters, 183 selfloop transitions, 250 changer transitions 19/453 dead transitions. [2024-11-07 11:31:10,417 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 453 transitions, 6004 flow [2024-11-07 11:31:10,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-07 11:31:10,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2024-11-07 11:31:10,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 357 transitions. [2024-11-07 11:31:10,419 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4358974358974359 [2024-11-07 11:31:10,419 INFO L175 Difference]: Start difference. First operand has 134 places, 177 transitions, 2184 flow. Second operand 39 states and 357 transitions. [2024-11-07 11:31:10,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 453 transitions, 6004 flow [2024-11-07 11:31:10,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 453 transitions, 5524 flow, removed 105 selfloop flow, removed 15 redundant places. [2024-11-07 11:31:10,505 INFO L231 Difference]: Finished difference. Result has 172 places, 324 transitions, 4614 flow [2024-11-07 11:31:10,505 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=1915, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=4614, PETRI_PLACES=172, PETRI_TRANSITIONS=324} [2024-11-07 11:31:10,506 INFO L277 CegarLoopForPetriNet]: 23 programPoint places, 149 predicate places. [2024-11-07 11:31:10,506 INFO L471 AbstractCegarLoop]: Abstraction has has 172 places, 324 transitions, 4614 flow [2024-11-07 11:31:10,506 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.708333333333333) internal successors, (113), 24 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:31:10,506 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:31:10,506 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:31:10,523 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-07 11:31:10,710 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-07 11:31:10,711 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:31:10,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:31:10,711 INFO L85 PathProgramCache]: Analyzing trace with hash -1094682093, now seen corresponding path program 5 times [2024-11-07 11:31:10,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:31:10,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224113551] [2024-11-07 11:31:10,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:31:10,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:31:10,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:31:10,934 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:31:10,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:31:10,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224113551] [2024-11-07 11:31:10,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224113551] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:31:10,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [859826665] [2024-11-07 11:31:10,935 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-07 11:31:10,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:31:10,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:31:10,938 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 11:31:10,942 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-07 11:31:10,988 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 11:31:10,988 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:31:10,989 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-07 11:31:10,990 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:31:11,179 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:31:11,179 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:31:11,495 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:31:11,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [859826665] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:31:11,496 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:31:11,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 10] total 23 [2024-11-07 11:31:11,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389551343] [2024-11-07 11:31:11,496 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:31:11,496 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-07 11:31:11,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:31:11,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-07 11:31:11,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=420, Unknown=0, NotChecked=0, Total=552 [2024-11-07 11:31:11,524 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2024-11-07 11:31:11,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 324 transitions, 4614 flow. Second operand has 24 states, 24 states have (on average 4.75) internal successors, (114), 24 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:31:11,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:31:11,525 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2024-11-07 11:31:11,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:31:12,663 INFO L124 PetriNetUnfolderBase]: 1104/1944 cut-off events. [2024-11-07 11:31:12,663 INFO L125 PetriNetUnfolderBase]: For 20936/20936 co-relation queries the response was YES. [2024-11-07 11:31:12,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13794 conditions, 1944 events. 1104/1944 cut-off events. For 20936/20936 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 10435 event pairs, 41 based on Foata normal form. 2/1946 useless extension candidates. Maximal degree in co-relation 13641. Up to 751 conditions per place. [2024-11-07 11:31:12,687 INFO L140 encePairwiseOnDemand]: 9/21 looper letters, 204 selfloop transitions, 256 changer transitions 24/485 dead transitions. [2024-11-07 11:31:12,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 485 transitions, 7420 flow [2024-11-07 11:31:12,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-07 11:31:12,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2024-11-07 11:31:12,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 305 transitions. [2024-11-07 11:31:12,689 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41496598639455784 [2024-11-07 11:31:12,690 INFO L175 Difference]: Start difference. First operand has 172 places, 324 transitions, 4614 flow. Second operand 35 states and 305 transitions. [2024-11-07 11:31:12,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 485 transitions, 7420 flow [2024-11-07 11:31:12,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 485 transitions, 6431 flow, removed 393 selfloop flow, removed 14 redundant places. [2024-11-07 11:31:12,850 INFO L231 Difference]: Finished difference. Result has 203 places, 376 transitions, 5574 flow [2024-11-07 11:31:12,851 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=3989, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=324, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=203, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=5574, PETRI_PLACES=203, PETRI_TRANSITIONS=376} [2024-11-07 11:31:12,851 INFO L277 CegarLoopForPetriNet]: 23 programPoint places, 180 predicate places. [2024-11-07 11:31:12,851 INFO L471 AbstractCegarLoop]: Abstraction has has 203 places, 376 transitions, 5574 flow [2024-11-07 11:31:12,851 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.75) internal successors, (114), 24 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:31:12,851 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:31:12,852 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:31:12,868 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-07 11:31:13,052 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:31:13,052 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:31:13,053 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:31:13,053 INFO L85 PathProgramCache]: Analyzing trace with hash 691254019, now seen corresponding path program 6 times [2024-11-07 11:31:13,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:31:13,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510531069] [2024-11-07 11:31:13,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:31:13,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:31:13,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:31:13,262 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:31:13,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:31:13,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510531069] [2024-11-07 11:31:13,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510531069] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:31:13,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1437077002] [2024-11-07 11:31:13,263 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-07 11:31:13,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:31:13,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:31:13,264 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 11:31:13,265 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-07 11:31:13,304 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-07 11:31:13,304 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:31:13,304 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-07 11:31:13,305 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:31:13,448 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:31:13,448 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:31:13,857 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:31:13,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1437077002] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:31:13,857 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:31:13,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2024-11-07 11:31:13,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918594766] [2024-11-07 11:31:13,857 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:31:13,858 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-07 11:31:13,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:31:13,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-07 11:31:13,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=433, Unknown=0, NotChecked=0, Total=552 [2024-11-07 11:31:13,880 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2024-11-07 11:31:13,880 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 376 transitions, 5574 flow. Second operand has 24 states, 24 states have (on average 4.833333333333333) internal successors, (116), 24 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:31:13,880 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:31:13,880 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2024-11-07 11:31:13,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:31:14,819 INFO L124 PetriNetUnfolderBase]: 1225/2178 cut-off events. [2024-11-07 11:31:14,820 INFO L125 PetriNetUnfolderBase]: For 20738/20738 co-relation queries the response was YES. [2024-11-07 11:31:14,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15330 conditions, 2178 events. 1225/2178 cut-off events. For 20738/20738 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 12176 event pairs, 36 based on Foata normal form. 13/2191 useless extension candidates. Maximal degree in co-relation 15168. Up to 974 conditions per place. [2024-11-07 11:31:14,847 INFO L140 encePairwiseOnDemand]: 9/21 looper letters, 220 selfloop transitions, 276 changer transitions 30/527 dead transitions. [2024-11-07 11:31:14,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 527 transitions, 8436 flow [2024-11-07 11:31:14,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-07 11:31:14,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-07 11:31:14,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 205 transitions. [2024-11-07 11:31:14,849 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4244306418219462 [2024-11-07 11:31:14,849 INFO L175 Difference]: Start difference. First operand has 203 places, 376 transitions, 5574 flow. Second operand 23 states and 205 transitions. [2024-11-07 11:31:14,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 527 transitions, 8436 flow [2024-11-07 11:31:15,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 527 transitions, 8230 flow, removed 41 selfloop flow, removed 10 redundant places. [2024-11-07 11:31:15,083 INFO L231 Difference]: Finished difference. Result has 221 places, 442 transitions, 7609 flow [2024-11-07 11:31:15,084 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=5391, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=205, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=7609, PETRI_PLACES=221, PETRI_TRANSITIONS=442} [2024-11-07 11:31:15,087 INFO L277 CegarLoopForPetriNet]: 23 programPoint places, 198 predicate places. [2024-11-07 11:31:15,088 INFO L471 AbstractCegarLoop]: Abstraction has has 221 places, 442 transitions, 7609 flow [2024-11-07 11:31:15,088 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.833333333333333) internal successors, (116), 24 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:31:15,089 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:31:15,089 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:31:15,105 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-07 11:31:15,289 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-07 11:31:15,290 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:31:15,291 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:31:15,291 INFO L85 PathProgramCache]: Analyzing trace with hash 1544171523, now seen corresponding path program 7 times [2024-11-07 11:31:15,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:31:15,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291900998] [2024-11-07 11:31:15,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:31:15,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:31:15,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:31:15,493 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:31:15,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:31:15,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291900998] [2024-11-07 11:31:15,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291900998] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:31:15,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [938186561] [2024-11-07 11:31:15,494 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-07 11:31:15,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:31:15,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:31:15,496 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 11:31:15,497 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-07 11:31:15,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:31:15,544 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-07 11:31:15,545 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:31:15,697 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:31:15,697 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:31:16,002 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:31:16,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [938186561] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:31:16,002 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:31:16,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2024-11-07 11:31:16,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026851987] [2024-11-07 11:31:16,002 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:31:16,003 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-07 11:31:16,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:31:16,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-07 11:31:16,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=418, Unknown=0, NotChecked=0, Total=552 [2024-11-07 11:31:16,012 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2024-11-07 11:31:16,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 442 transitions, 7609 flow. Second operand has 24 states, 24 states have (on average 4.791666666666667) internal successors, (115), 24 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:31:16,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:31:16,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2024-11-07 11:31:16,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:31:16,976 INFO L124 PetriNetUnfolderBase]: 1291/2280 cut-off events. [2024-11-07 11:31:16,977 INFO L125 PetriNetUnfolderBase]: For 28931/28931 co-relation queries the response was YES. [2024-11-07 11:31:16,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17865 conditions, 2280 events. 1291/2280 cut-off events. For 28931/28931 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 12712 event pairs, 27 based on Foata normal form. 2/2282 useless extension candidates. Maximal degree in co-relation 17694. Up to 1028 conditions per place. [2024-11-07 11:31:17,002 INFO L140 encePairwiseOnDemand]: 9/21 looper letters, 232 selfloop transitions, 335 changer transitions 21/589 dead transitions. [2024-11-07 11:31:17,003 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 589 transitions, 10730 flow [2024-11-07 11:31:17,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-07 11:31:17,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-11-07 11:31:17,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 223 transitions. [2024-11-07 11:31:17,004 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3932980599647266 [2024-11-07 11:31:17,005 INFO L175 Difference]: Start difference. First operand has 221 places, 442 transitions, 7609 flow. Second operand 27 states and 223 transitions. [2024-11-07 11:31:17,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 589 transitions, 10730 flow [2024-11-07 11:31:17,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 589 transitions, 10506 flow, removed 87 selfloop flow, removed 8 redundant places. [2024-11-07 11:31:17,244 INFO L231 Difference]: Finished difference. Result has 248 places, 516 transitions, 10031 flow [2024-11-07 11:31:17,245 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=7446, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=442, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=263, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=10031, PETRI_PLACES=248, PETRI_TRANSITIONS=516} [2024-11-07 11:31:17,245 INFO L277 CegarLoopForPetriNet]: 23 programPoint places, 225 predicate places. [2024-11-07 11:31:17,245 INFO L471 AbstractCegarLoop]: Abstraction has has 248 places, 516 transitions, 10031 flow [2024-11-07 11:31:17,245 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.791666666666667) internal successors, (115), 24 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:31:17,245 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:31:17,246 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:31:17,258 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-07 11:31:17,446 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:31:17,446 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:31:17,447 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:31:17,447 INFO L85 PathProgramCache]: Analyzing trace with hash 1247042307, now seen corresponding path program 8 times [2024-11-07 11:31:17,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:31:17,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400013427] [2024-11-07 11:31:17,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:31:17,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:31:17,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:31:17,631 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:31:17,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:31:17,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400013427] [2024-11-07 11:31:17,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400013427] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:31:17,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2129190320] [2024-11-07 11:31:17,632 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 11:31:17,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:31:17,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:31:17,634 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 11:31:17,662 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-07 11:31:17,700 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 11:31:17,700 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:31:17,701 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-07 11:31:17,702 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:31:17,883 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:31:17,884 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:31:18,256 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:31:18,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2129190320] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:31:18,256 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:31:18,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2024-11-07 11:31:18,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125220766] [2024-11-07 11:31:18,256 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:31:18,257 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-07 11:31:18,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:31:18,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-07 11:31:18,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=428, Unknown=0, NotChecked=0, Total=552 [2024-11-07 11:31:18,269 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2024-11-07 11:31:18,269 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 516 transitions, 10031 flow. Second operand has 24 states, 24 states have (on average 4.833333333333333) internal successors, (116), 24 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:31:18,269 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:31:18,270 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2024-11-07 11:31:18,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:31:19,143 INFO L124 PetriNetUnfolderBase]: 1280/2246 cut-off events. [2024-11-07 11:31:19,143 INFO L125 PetriNetUnfolderBase]: For 33603/33603 co-relation queries the response was YES. [2024-11-07 11:31:19,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19632 conditions, 2246 events. 1280/2246 cut-off events. For 33603/33603 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 12253 event pairs, 31 based on Foata normal form. 7/2253 useless extension candidates. Maximal degree in co-relation 19482. Up to 1012 conditions per place. [2024-11-07 11:31:19,166 INFO L140 encePairwiseOnDemand]: 9/21 looper letters, 259 selfloop transitions, 313 changer transitions 26/599 dead transitions. [2024-11-07 11:31:19,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 599 transitions, 12291 flow [2024-11-07 11:31:19,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-07 11:31:19,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-07 11:31:19,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 191 transitions. [2024-11-07 11:31:19,168 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4331065759637188 [2024-11-07 11:31:19,168 INFO L175 Difference]: Start difference. First operand has 248 places, 516 transitions, 10031 flow. Second operand 21 states and 191 transitions. [2024-11-07 11:31:19,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 599 transitions, 12291 flow [2024-11-07 11:31:19,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 599 transitions, 12043 flow, removed 102 selfloop flow, removed 9 redundant places. [2024-11-07 11:31:19,564 INFO L231 Difference]: Finished difference. Result has 265 places, 529 transitions, 11431 flow [2024-11-07 11:31:19,565 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=9786, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=514, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=288, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=11431, PETRI_PLACES=265, PETRI_TRANSITIONS=529} [2024-11-07 11:31:19,565 INFO L277 CegarLoopForPetriNet]: 23 programPoint places, 242 predicate places. [2024-11-07 11:31:19,565 INFO L471 AbstractCegarLoop]: Abstraction has has 265 places, 529 transitions, 11431 flow [2024-11-07 11:31:19,565 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.833333333333333) internal successors, (116), 24 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:31:19,565 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:31:19,566 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:31:19,577 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-07 11:31:19,767 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:31:19,767 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:31:19,767 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:31:19,767 INFO L85 PathProgramCache]: Analyzing trace with hash 2099959811, now seen corresponding path program 9 times [2024-11-07 11:31:19,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:31:19,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058028285] [2024-11-07 11:31:19,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:31:19,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:31:19,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:31:19,966 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:31:19,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:31:19,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058028285] [2024-11-07 11:31:19,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058028285] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:31:19,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1289592519] [2024-11-07 11:31:19,967 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-07 11:31:19,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:31:19,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:31:19,969 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 11:31:19,971 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-07 11:31:20,013 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-07 11:31:20,013 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:31:20,014 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-07 11:31:20,015 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:31:20,188 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:31:20,188 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:31:20,449 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:31:20,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1289592519] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:31:20,450 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:31:20,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2024-11-07 11:31:20,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235714615] [2024-11-07 11:31:20,450 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:31:20,450 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-07 11:31:20,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:31:20,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-07 11:31:20,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=417, Unknown=0, NotChecked=0, Total=552 [2024-11-07 11:31:20,471 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2024-11-07 11:31:20,472 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 529 transitions, 11431 flow. Second operand has 24 states, 24 states have (on average 4.791666666666667) internal successors, (115), 24 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:31:20,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:31:20,472 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2024-11-07 11:31:20,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:31:21,649 INFO L124 PetriNetUnfolderBase]: 1306/2297 cut-off events. [2024-11-07 11:31:21,649 INFO L125 PetriNetUnfolderBase]: For 40668/40668 co-relation queries the response was YES. [2024-11-07 11:31:21,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21639 conditions, 2297 events. 1306/2297 cut-off events. For 40668/40668 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 12621 event pairs, 28 based on Foata normal form. 2/2299 useless extension candidates. Maximal degree in co-relation 21463. Up to 1024 conditions per place. [2024-11-07 11:31:21,674 INFO L140 encePairwiseOnDemand]: 9/21 looper letters, 261 selfloop transitions, 378 changer transitions 18/658 dead transitions. [2024-11-07 11:31:21,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 658 transitions, 14505 flow [2024-11-07 11:31:21,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-07 11:31:21,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2024-11-07 11:31:21,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 271 transitions. [2024-11-07 11:31:21,679 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39105339105339104 [2024-11-07 11:31:21,679 INFO L175 Difference]: Start difference. First operand has 265 places, 529 transitions, 11431 flow. Second operand 33 states and 271 transitions. [2024-11-07 11:31:21,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 658 transitions, 14505 flow [2024-11-07 11:31:22,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 658 transitions, 14324 flow, removed 41 selfloop flow, removed 13 redundant places. [2024-11-07 11:31:22,113 INFO L231 Difference]: Finished difference. Result has 292 places, 585 transitions, 13921 flow [2024-11-07 11:31:22,114 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=11294, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=529, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=323, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=13921, PETRI_PLACES=292, PETRI_TRANSITIONS=585} [2024-11-07 11:31:22,114 INFO L277 CegarLoopForPetriNet]: 23 programPoint places, 269 predicate places. [2024-11-07 11:31:22,114 INFO L471 AbstractCegarLoop]: Abstraction has has 292 places, 585 transitions, 13921 flow [2024-11-07 11:31:22,114 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.791666666666667) internal successors, (115), 24 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:31:22,114 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:31:22,115 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:31:22,126 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-07 11:31:22,315 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:31:22,316 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:31:22,316 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:31:22,316 INFO L85 PathProgramCache]: Analyzing trace with hash -492124575, now seen corresponding path program 10 times [2024-11-07 11:31:22,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:31:22,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344288747] [2024-11-07 11:31:22,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:31:22,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:31:22,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:31:22,503 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:31:22,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:31:22,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344288747] [2024-11-07 11:31:22,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344288747] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:31:22,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1995037891] [2024-11-07 11:31:22,504 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-07 11:31:22,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:31:22,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:31:22,506 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 11:31:22,509 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-07 11:31:22,561 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-07 11:31:22,561 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:31:22,562 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-07 11:31:22,563 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:31:22,752 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:31:22,753 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:31:23,000 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:31:23,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1995037891] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:31:23,000 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:31:23,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 10] total 25 [2024-11-07 11:31:23,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955875502] [2024-11-07 11:31:23,000 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:31:23,001 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-07 11:31:23,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:31:23,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-07 11:31:23,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=501, Unknown=0, NotChecked=0, Total=650 [2024-11-07 11:31:23,022 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2024-11-07 11:31:23,022 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 585 transitions, 13921 flow. Second operand has 26 states, 26 states have (on average 4.846153846153846) internal successors, (126), 26 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:31:23,022 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:31:23,022 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2024-11-07 11:31:23,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:31:24,003 INFO L124 PetriNetUnfolderBase]: 1322/2324 cut-off events. [2024-11-07 11:31:24,003 INFO L125 PetriNetUnfolderBase]: For 49267/49267 co-relation queries the response was YES. [2024-11-07 11:31:24,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23858 conditions, 2324 events. 1322/2324 cut-off events. For 49267/49267 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 12756 event pairs, 18 based on Foata normal form. 1/2325 useless extension candidates. Maximal degree in co-relation 23664. Up to 1071 conditions per place. [2024-11-07 11:31:24,024 INFO L140 encePairwiseOnDemand]: 10/21 looper letters, 210 selfloop transitions, 443 changer transitions 5/659 dead transitions. [2024-11-07 11:31:24,024 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 659 transitions, 16265 flow [2024-11-07 11:31:24,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-07 11:31:24,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-07 11:31:24,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 185 transitions. [2024-11-07 11:31:24,026 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3830227743271222 [2024-11-07 11:31:24,026 INFO L175 Difference]: Start difference. First operand has 292 places, 585 transitions, 13921 flow. Second operand 23 states and 185 transitions. [2024-11-07 11:31:24,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 659 transitions, 16265 flow [2024-11-07 11:31:24,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 659 transitions, 15873 flow, removed 83 selfloop flow, removed 14 redundant places. [2024-11-07 11:31:24,476 INFO L231 Difference]: Finished difference. Result has 298 places, 604 transitions, 15119 flow [2024-11-07 11:31:24,477 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=13541, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=585, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=423, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=15119, PETRI_PLACES=298, PETRI_TRANSITIONS=604} [2024-11-07 11:31:24,477 INFO L277 CegarLoopForPetriNet]: 23 programPoint places, 275 predicate places. [2024-11-07 11:31:24,477 INFO L471 AbstractCegarLoop]: Abstraction has has 298 places, 604 transitions, 15119 flow [2024-11-07 11:31:24,478 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.846153846153846) internal successors, (126), 26 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:31:24,478 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:31:24,478 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:31:24,490 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-07 11:31:24,678 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-07 11:31:24,678 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:31:24,679 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:31:24,679 INFO L85 PathProgramCache]: Analyzing trace with hash -185650157, now seen corresponding path program 11 times [2024-11-07 11:31:24,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:31:24,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45896902] [2024-11-07 11:31:24,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:31:24,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:31:24,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:31:24,894 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:31:24,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:31:24,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45896902] [2024-11-07 11:31:24,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45896902] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:31:24,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1277310914] [2024-11-07 11:31:24,895 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-07 11:31:24,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:31:24,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:31:24,897 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 11:31:24,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-07 11:31:24,948 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-07 11:31:24,948 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:31:24,949 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-07 11:31:24,950 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:31:25,200 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:31:25,200 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:31:25,601 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:31:25,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1277310914] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:31:25,601 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:31:25,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2024-11-07 11:31:25,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063429288] [2024-11-07 11:31:25,601 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:31:25,602 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-07 11:31:25,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:31:25,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-07 11:31:25,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=958, Unknown=0, NotChecked=0, Total=1122 [2024-11-07 11:31:25,609 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2024-11-07 11:31:25,609 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 604 transitions, 15119 flow. Second operand has 34 states, 34 states have (on average 4.705882352941177) internal successors, (160), 34 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:31:25,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:31:25,609 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2024-11-07 11:31:25,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:31:28,313 INFO L124 PetriNetUnfolderBase]: 1822/3287 cut-off events. [2024-11-07 11:31:28,314 INFO L125 PetriNetUnfolderBase]: For 79679/79679 co-relation queries the response was YES. [2024-11-07 11:31:28,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35477 conditions, 3287 events. 1822/3287 cut-off events. For 79679/79679 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 19556 event pairs, 63 based on Foata normal form. 5/3292 useless extension candidates. Maximal degree in co-relation 35247. Up to 1050 conditions per place. [2024-11-07 11:31:28,349 INFO L140 encePairwiseOnDemand]: 10/21 looper letters, 403 selfloop transitions, 557 changer transitions 29/990 dead transitions. [2024-11-07 11:31:28,349 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 990 transitions, 24616 flow [2024-11-07 11:31:28,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2024-11-07 11:31:28,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2024-11-07 11:31:28,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 549 transitions. [2024-11-07 11:31:28,352 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41496598639455784 [2024-11-07 11:31:28,352 INFO L175 Difference]: Start difference. First operand has 298 places, 604 transitions, 15119 flow. Second operand 63 states and 549 transitions. [2024-11-07 11:31:28,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 990 transitions, 24616 flow [2024-11-07 11:31:28,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 990 transitions, 24396 flow, removed 49 selfloop flow, removed 17 redundant places. [2024-11-07 11:31:28,995 INFO L231 Difference]: Finished difference. Result has 363 places, 780 transitions, 21984 flow [2024-11-07 11:31:28,996 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=14919, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=604, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=405, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=63, PETRI_FLOW=21984, PETRI_PLACES=363, PETRI_TRANSITIONS=780} [2024-11-07 11:31:28,997 INFO L277 CegarLoopForPetriNet]: 23 programPoint places, 340 predicate places. [2024-11-07 11:31:28,997 INFO L471 AbstractCegarLoop]: Abstraction has has 363 places, 780 transitions, 21984 flow [2024-11-07 11:31:28,997 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 4.705882352941177) internal successors, (160), 34 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:31:28,997 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:31:28,997 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:31:29,015 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-07 11:31:29,201 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-07 11:31:29,202 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:31:29,202 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:31:29,202 INFO L85 PathProgramCache]: Analyzing trace with hash 331302923, now seen corresponding path program 12 times [2024-11-07 11:31:29,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:31:29,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592585813] [2024-11-07 11:31:29,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:31:29,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:31:29,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:31:29,417 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:31:29,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:31:29,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592585813] [2024-11-07 11:31:29,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592585813] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:31:29,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1982264550] [2024-11-07 11:31:29,417 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-07 11:31:29,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:31:29,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:31:29,420 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 11:31:29,421 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-07 11:31:29,462 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-07 11:31:29,462 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:31:29,463 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-07 11:31:29,464 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:31:29,689 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:31:29,689 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:31:30,149 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:31:30,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1982264550] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:31:30,150 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:31:30,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2024-11-07 11:31:30,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424510340] [2024-11-07 11:31:30,150 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:31:30,150 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-07 11:31:30,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:31:30,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-07 11:31:30,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=961, Unknown=0, NotChecked=0, Total=1122 [2024-11-07 11:31:30,159 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2024-11-07 11:31:30,160 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 780 transitions, 21984 flow. Second operand has 34 states, 34 states have (on average 4.705882352941177) internal successors, (160), 34 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:31:30,160 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:31:30,160 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2024-11-07 11:31:30,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:31:34,009 INFO L124 PetriNetUnfolderBase]: 2049/3687 cut-off events. [2024-11-07 11:31:34,009 INFO L125 PetriNetUnfolderBase]: For 113661/113661 co-relation queries the response was YES. [2024-11-07 11:31:34,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43869 conditions, 3687 events. 2049/3687 cut-off events. For 113661/113661 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 22530 event pairs, 41 based on Foata normal form. 5/3692 useless extension candidates. Maximal degree in co-relation 43755. Up to 1157 conditions per place. [2024-11-07 11:31:34,057 INFO L140 encePairwiseOnDemand]: 9/21 looper letters, 375 selfloop transitions, 708 changer transitions 29/1113 dead transitions. [2024-11-07 11:31:34,058 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 437 places, 1113 transitions, 30503 flow [2024-11-07 11:31:34,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2024-11-07 11:31:34,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2024-11-07 11:31:34,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 660 transitions. [2024-11-07 11:31:34,061 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39783001808318263 [2024-11-07 11:31:34,061 INFO L175 Difference]: Start difference. First operand has 363 places, 780 transitions, 21984 flow. Second operand 79 states and 660 transitions. [2024-11-07 11:31:34,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 437 places, 1113 transitions, 30503 flow [2024-11-07 11:31:35,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 424 places, 1113 transitions, 29923 flow, removed 184 selfloop flow, removed 13 redundant places. [2024-11-07 11:31:35,389 INFO L231 Difference]: Finished difference. Result has 445 places, 910 transitions, 27628 flow [2024-11-07 11:31:35,390 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=21560, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=780, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=586, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=79, PETRI_FLOW=27628, PETRI_PLACES=445, PETRI_TRANSITIONS=910} [2024-11-07 11:31:35,390 INFO L277 CegarLoopForPetriNet]: 23 programPoint places, 422 predicate places. [2024-11-07 11:31:35,391 INFO L471 AbstractCegarLoop]: Abstraction has has 445 places, 910 transitions, 27628 flow [2024-11-07 11:31:35,391 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 4.705882352941177) internal successors, (160), 34 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:31:35,391 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:31:35,391 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:31:35,403 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-07 11:31:35,591 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:31:35,592 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:31:35,592 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:31:35,592 INFO L85 PathProgramCache]: Analyzing trace with hash 171951597, now seen corresponding path program 13 times [2024-11-07 11:31:35,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:31:35,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800353404] [2024-11-07 11:31:35,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:31:35,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:31:35,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:31:35,810 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:31:35,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:31:35,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800353404] [2024-11-07 11:31:35,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800353404] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:31:35,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1515603058] [2024-11-07 11:31:35,811 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-07 11:31:35,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:31:35,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:31:35,814 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 11:31:35,815 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-07 11:31:35,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:31:35,860 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-07 11:31:35,861 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:31:36,107 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:31:36,107 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:31:36,550 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:31:36,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1515603058] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:31:36,550 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:31:36,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2024-11-07 11:31:36,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298391581] [2024-11-07 11:31:36,551 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:31:36,551 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-07 11:31:36,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:31:36,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-07 11:31:36,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=954, Unknown=0, NotChecked=0, Total=1122 [2024-11-07 11:31:36,564 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2024-11-07 11:31:36,565 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 445 places, 910 transitions, 27628 flow. Second operand has 34 states, 34 states have (on average 4.676470588235294) internal successors, (159), 34 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:31:36,565 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:31:36,565 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2024-11-07 11:31:36,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:31:41,908 INFO L124 PetriNetUnfolderBase]: 2324/4200 cut-off events. [2024-11-07 11:31:41,908 INFO L125 PetriNetUnfolderBase]: For 153926/153926 co-relation queries the response was YES. [2024-11-07 11:31:41,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53253 conditions, 4200 events. 2324/4200 cut-off events. For 153926/153926 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 26552 event pairs, 44 based on Foata normal form. 6/4206 useless extension candidates. Maximal degree in co-relation 52800. Up to 1310 conditions per place. [2024-11-07 11:31:41,962 INFO L140 encePairwiseOnDemand]: 9/21 looper letters, 418 selfloop transitions, 853 changer transitions 29/1301 dead transitions. [2024-11-07 11:31:41,962 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 553 places, 1301 transitions, 38012 flow [2024-11-07 11:31:41,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2024-11-07 11:31:41,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2024-11-07 11:31:41,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 897 transitions. [2024-11-07 11:31:41,965 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3780025284450063 [2024-11-07 11:31:41,965 INFO L175 Difference]: Start difference. First operand has 445 places, 910 transitions, 27628 flow. Second operand 113 states and 897 transitions. [2024-11-07 11:31:41,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 553 places, 1301 transitions, 38012 flow [2024-11-07 11:31:43,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 524 places, 1301 transitions, 37187 flow, removed 147 selfloop flow, removed 29 redundant places. [2024-11-07 11:31:43,919 INFO L231 Difference]: Finished difference. Result has 539 places, 1059 transitions, 34027 flow [2024-11-07 11:31:43,920 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=26933, PETRI_DIFFERENCE_MINUEND_PLACES=412, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=909, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=730, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=113, PETRI_FLOW=34027, PETRI_PLACES=539, PETRI_TRANSITIONS=1059} [2024-11-07 11:31:43,920 INFO L277 CegarLoopForPetriNet]: 23 programPoint places, 516 predicate places. [2024-11-07 11:31:43,920 INFO L471 AbstractCegarLoop]: Abstraction has has 539 places, 1059 transitions, 34027 flow [2024-11-07 11:31:43,920 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 4.676470588235294) internal successors, (159), 34 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:31:43,920 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:31:43,920 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:31:43,932 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-07 11:31:44,121 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:31:44,121 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:31:44,121 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:31:44,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1921420705, now seen corresponding path program 14 times [2024-11-07 11:31:44,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:31:44,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021845687] [2024-11-07 11:31:44,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:31:44,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:31:44,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:31:44,338 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:31:44,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:31:44,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021845687] [2024-11-07 11:31:44,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021845687] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:31:44,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1589543806] [2024-11-07 11:31:44,339 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 11:31:44,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:31:44,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:31:44,342 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 11:31:44,344 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-07 11:31:44,391 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 11:31:44,392 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:31:44,393 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-07 11:31:44,394 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:31:44,685 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:31:44,685 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:31:45,128 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:31:45,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1589543806] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:31:45,128 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:31:45,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2024-11-07 11:31:45,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880369229] [2024-11-07 11:31:45,128 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:31:45,128 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-07 11:31:45,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:31:45,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-07 11:31:45,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=958, Unknown=0, NotChecked=0, Total=1122 [2024-11-07 11:31:45,137 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2024-11-07 11:31:45,137 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 539 places, 1059 transitions, 34027 flow. Second operand has 34 states, 34 states have (on average 4.676470588235294) internal successors, (159), 34 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:31:45,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:31:45,137 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2024-11-07 11:31:45,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:31:49,659 INFO L124 PetriNetUnfolderBase]: 2801/5033 cut-off events. [2024-11-07 11:31:49,659 INFO L125 PetriNetUnfolderBase]: For 214856/214856 co-relation queries the response was YES. [2024-11-07 11:31:49,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68773 conditions, 5033 events. 2801/5033 cut-off events. For 214856/214856 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 33037 event pairs, 71 based on Foata normal form. 5/5038 useless extension candidates. Maximal degree in co-relation 68241. Up to 1587 conditions per place. [2024-11-07 11:31:49,716 INFO L140 encePairwiseOnDemand]: 9/21 looper letters, 484 selfloop transitions, 1027 changer transitions 19/1531 dead transitions. [2024-11-07 11:31:49,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 619 places, 1531 transitions, 49581 flow [2024-11-07 11:31:49,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2024-11-07 11:31:49,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2024-11-07 11:31:49,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 715 transitions. [2024-11-07 11:31:49,718 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3959025470653378 [2024-11-07 11:31:49,718 INFO L175 Difference]: Start difference. First operand has 539 places, 1059 transitions, 34027 flow. Second operand 86 states and 715 transitions. [2024-11-07 11:31:49,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 619 places, 1531 transitions, 49581 flow [2024-11-07 11:31:53,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 562 places, 1531 transitions, 47276 flow, removed 714 selfloop flow, removed 57 redundant places. [2024-11-07 11:31:53,048 INFO L231 Difference]: Finished difference. Result has 592 places, 1325 transitions, 45080 flow [2024-11-07 11:31:53,050 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=32513, PETRI_DIFFERENCE_MINUEND_PLACES=477, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1058, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=770, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=86, PETRI_FLOW=45080, PETRI_PLACES=592, PETRI_TRANSITIONS=1325} [2024-11-07 11:31:53,050 INFO L277 CegarLoopForPetriNet]: 23 programPoint places, 569 predicate places. [2024-11-07 11:31:53,051 INFO L471 AbstractCegarLoop]: Abstraction has has 592 places, 1325 transitions, 45080 flow [2024-11-07 11:31:53,051 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 4.676470588235294) internal successors, (159), 34 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:31:53,051 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:31:53,051 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:31:53,069 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-07 11:31:53,252 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-07 11:31:53,252 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:31:53,253 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:31:53,253 INFO L85 PathProgramCache]: Analyzing trace with hash -105111933, now seen corresponding path program 15 times [2024-11-07 11:31:53,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:31:53,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250913054] [2024-11-07 11:31:53,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:31:53,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:31:53,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:31:53,509 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:31:53,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:31:53,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250913054] [2024-11-07 11:31:53,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250913054] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:31:53,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1529622783] [2024-11-07 11:31:53,510 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-07 11:31:53,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:31:53,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:31:53,513 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 11:31:53,515 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-07 11:31:53,579 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-07 11:31:53,580 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:31:53,581 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-07 11:31:53,582 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:31:53,916 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:31:53,916 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:31:54,411 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:31:54,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1529622783] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:31:54,412 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:31:54,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2024-11-07 11:31:54,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865237099] [2024-11-07 11:31:54,412 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:31:54,412 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-07 11:31:54,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:31:54,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-07 11:31:54,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=969, Unknown=0, NotChecked=0, Total=1122 [2024-11-07 11:31:54,418 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2024-11-07 11:31:54,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 592 places, 1325 transitions, 45080 flow. Second operand has 34 states, 34 states have (on average 4.705882352941177) internal successors, (160), 34 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:31:54,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:31:54,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2024-11-07 11:31:54,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:31:58,880 INFO L124 PetriNetUnfolderBase]: 3191/5728 cut-off events. [2024-11-07 11:31:58,880 INFO L125 PetriNetUnfolderBase]: For 286657/286657 co-relation queries the response was YES. [2024-11-07 11:31:58,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81377 conditions, 5728 events. 3191/5728 cut-off events. For 286657/286657 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 38682 event pairs, 87 based on Foata normal form. 4/5732 useless extension candidates. Maximal degree in co-relation 80878. Up to 2498 conditions per place. [2024-11-07 11:31:58,973 INFO L140 encePairwiseOnDemand]: 9/21 looper letters, 630 selfloop transitions, 1009 changer transitions 25/1665 dead transitions. [2024-11-07 11:31:58,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 658 places, 1665 transitions, 56987 flow [2024-11-07 11:31:58,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2024-11-07 11:31:58,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2024-11-07 11:31:58,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 565 transitions. [2024-11-07 11:31:58,974 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3843537414965986 [2024-11-07 11:31:58,974 INFO L175 Difference]: Start difference. First operand has 592 places, 1325 transitions, 45080 flow. Second operand 70 states and 565 transitions. [2024-11-07 11:31:58,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 658 places, 1665 transitions, 56987 flow [2024-11-07 11:32:03,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 638 places, 1665 transitions, 56007 flow, removed 245 selfloop flow, removed 20 redundant places. [2024-11-07 11:32:03,494 INFO L231 Difference]: Finished difference. Result has 672 places, 1507 transitions, 54821 flow [2024-11-07 11:32:03,496 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=44206, PETRI_DIFFERENCE_MINUEND_PLACES=569, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=828, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=413, PETRI_DIFFERENCE_SUBTRAHEND_STATES=70, PETRI_FLOW=54821, PETRI_PLACES=672, PETRI_TRANSITIONS=1507} [2024-11-07 11:32:03,497 INFO L277 CegarLoopForPetriNet]: 23 programPoint places, 649 predicate places. [2024-11-07 11:32:03,497 INFO L471 AbstractCegarLoop]: Abstraction has has 672 places, 1507 transitions, 54821 flow [2024-11-07 11:32:03,497 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 4.705882352941177) internal successors, (160), 34 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:32:03,498 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:32:03,498 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:32:03,516 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-07 11:32:03,698 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-07 11:32:03,699 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:32:03,699 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:32:03,699 INFO L85 PathProgramCache]: Analyzing trace with hash 209949993, now seen corresponding path program 16 times [2024-11-07 11:32:03,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:32:03,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739649902] [2024-11-07 11:32:03,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:32:03,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:32:03,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:32:03,912 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:32:03,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:32:03,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739649902] [2024-11-07 11:32:03,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739649902] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:32:03,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [354180981] [2024-11-07 11:32:03,913 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-07 11:32:03,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:32:03,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:32:03,916 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 11:32:03,917 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-07 11:32:03,960 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-07 11:32:03,961 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:32:03,961 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-07 11:32:03,962 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:32:04,261 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:32:04,261 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:32:04,779 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:32:04,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [354180981] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:32:04,779 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:32:04,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2024-11-07 11:32:04,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194442686] [2024-11-07 11:32:04,779 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:32:04,780 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-07 11:32:04,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:32:04,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-07 11:32:04,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=954, Unknown=0, NotChecked=0, Total=1122 [2024-11-07 11:32:04,791 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2024-11-07 11:32:04,791 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 672 places, 1507 transitions, 54821 flow. Second operand has 34 states, 34 states have (on average 4.676470588235294) internal successors, (159), 34 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:32:04,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:32:04,791 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2024-11-07 11:32:04,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:32:10,212 INFO L124 PetriNetUnfolderBase]: 3477/6276 cut-off events. [2024-11-07 11:32:10,213 INFO L125 PetriNetUnfolderBase]: For 384671/384671 co-relation queries the response was YES. [2024-11-07 11:32:10,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94639 conditions, 6276 events. 3477/6276 cut-off events. For 384671/384671 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 43487 event pairs, 89 based on Foata normal form. 6/6282 useless extension candidates. Maximal degree in co-relation 94123. Up to 2396 conditions per place. [2024-11-07 11:32:10,305 INFO L140 encePairwiseOnDemand]: 9/21 looper letters, 615 selfloop transitions, 1217 changer transitions 20/1853 dead transitions. [2024-11-07 11:32:10,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 749 places, 1853 transitions, 67069 flow [2024-11-07 11:32:10,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2024-11-07 11:32:10,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2024-11-07 11:32:10,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 667 transitions. [2024-11-07 11:32:10,306 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3873403019744483 [2024-11-07 11:32:10,306 INFO L175 Difference]: Start difference. First operand has 672 places, 1507 transitions, 54821 flow. Second operand 82 states and 667 transitions. [2024-11-07 11:32:10,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 749 places, 1853 transitions, 67069 flow [2024-11-07 11:32:16,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 728 places, 1853 transitions, 66733 flow, removed 84 selfloop flow, removed 21 redundant places. [2024-11-07 11:32:16,367 INFO L231 Difference]: Finished difference. Result has 753 places, 1659 transitions, 64990 flow [2024-11-07 11:32:16,369 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=54572, PETRI_DIFFERENCE_MINUEND_PLACES=647, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1507, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1082, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=395, PETRI_DIFFERENCE_SUBTRAHEND_STATES=82, PETRI_FLOW=64990, PETRI_PLACES=753, PETRI_TRANSITIONS=1659} [2024-11-07 11:32:16,369 INFO L277 CegarLoopForPetriNet]: 23 programPoint places, 730 predicate places. [2024-11-07 11:32:16,369 INFO L471 AbstractCegarLoop]: Abstraction has has 753 places, 1659 transitions, 64990 flow [2024-11-07 11:32:16,370 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 4.676470588235294) internal successors, (159), 34 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:32:16,370 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:32:16,370 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:32:16,381 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-07 11:32:16,570 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-07 11:32:16,570 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:32:16,571 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:32:16,571 INFO L85 PathProgramCache]: Analyzing trace with hash 76784223, now seen corresponding path program 17 times [2024-11-07 11:32:16,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:32:16,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577999237] [2024-11-07 11:32:16,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:32:16,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:32:16,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:32:16,780 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:32:16,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:32:16,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577999237] [2024-11-07 11:32:16,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577999237] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:32:16,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [556338250] [2024-11-07 11:32:16,781 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-07 11:32:16,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:32:16,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:32:16,783 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 11:32:16,784 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-07 11:32:16,823 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-07 11:32:16,823 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:32:16,824 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-07 11:32:16,824 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:32:17,052 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:32:17,053 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:32:17,445 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:32:17,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [556338250] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:32:17,445 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:32:17,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2024-11-07 11:32:17,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655093189] [2024-11-07 11:32:17,446 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:32:17,446 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-07 11:32:17,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:32:17,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-07 11:32:17,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=953, Unknown=0, NotChecked=0, Total=1122 [2024-11-07 11:32:17,457 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2024-11-07 11:32:17,458 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 753 places, 1659 transitions, 64990 flow. Second operand has 34 states, 34 states have (on average 4.705882352941177) internal successors, (160), 34 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:32:17,458 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:32:17,458 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2024-11-07 11:32:17,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:32:23,992 INFO L124 PetriNetUnfolderBase]: 3494/6298 cut-off events. [2024-11-07 11:32:23,992 INFO L125 PetriNetUnfolderBase]: For 424164/424164 co-relation queries the response was YES. [2024-11-07 11:32:24,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100905 conditions, 6298 events. 3494/6298 cut-off events. For 424164/424164 co-relation queries the response was YES. Maximal size of possible extension queue 388. Compared 43573 event pairs, 92 based on Foata normal form. 5/6303 useless extension candidates. Maximal degree in co-relation 100355. Up to 2423 conditions per place. [2024-11-07 11:32:24,099 INFO L140 encePairwiseOnDemand]: 9/21 looper letters, 638 selfloop transitions, 1200 changer transitions 27/1866 dead transitions. [2024-11-07 11:32:24,099 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 844 places, 1866 transitions, 71748 flow [2024-11-07 11:32:24,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2024-11-07 11:32:24,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2024-11-07 11:32:24,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 748 transitions. [2024-11-07 11:32:24,101 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.36720667648502703 [2024-11-07 11:32:24,101 INFO L175 Difference]: Start difference. First operand has 753 places, 1659 transitions, 64990 flow. Second operand 97 states and 748 transitions. [2024-11-07 11:32:24,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 844 places, 1866 transitions, 71748 flow