./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-queue-add-3.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-queue-add-3.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', 'd2c89f010e0f73e8ba7e81bb150b82b70d39c0827c0d616dd2c3347839d51e01'] 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-queue-add-3.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 d2c89f010e0f73e8ba7e81bb150b82b70d39c0827c0d616dd2c3347839d51e01 --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-07 11:31:38,930 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-07 11:31:39,031 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-07 11:31:39,036 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-07 11:31:39,038 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-07 11:31:39,070 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-07 11:31:39,071 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-07 11:31:39,071 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-07 11:31:39,072 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-07 11:31:39,072 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-07 11:31:39,073 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-07 11:31:39,073 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-07 11:31:39,073 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-07 11:31:39,073 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-07 11:31:39,074 INFO L153 SettingsManager]: * Use SBE=true [2024-11-07 11:31:39,074 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-07 11:31:39,074 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-07 11:31:39,074 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-07 11:31:39,074 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-07 11:31:39,074 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-07 11:31:39,075 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-07 11:31:39,075 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-07 11:31:39,075 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-07 11:31:39,075 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-07 11:31:39,075 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-07 11:31:39,075 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-07 11:31:39,075 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-07 11:31:39,076 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-07 11:31:39,076 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-07 11:31:39,076 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-07 11:31:39,076 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-07 11:31:39,076 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-07 11:31:39,077 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 11:31:39,077 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-07 11:31:39,077 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-07 11:31:39,077 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-07 11:31:39,078 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-07 11:31:39,078 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-07 11:31:39,078 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-07 11:31:39,078 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-07 11:31:39,078 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-07 11:31:39,078 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-07 11:31:39,078 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 -> d2c89f010e0f73e8ba7e81bb150b82b70d39c0827c0d616dd2c3347839d51e01 [2024-11-07 11:31:39,365 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-07 11:31:39,375 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-07 11:31:39,377 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-07 11:31:39,378 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-07 11:31:39,378 INFO L274 PluginConnector]: CDTParser initialized [2024-11-07 11:31:39,379 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-queue-add-3.wvr.c [2024-11-07 11:31:40,636 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-07 11:31:40,828 INFO L384 CDTParser]: Found 1 translation units. [2024-11-07 11:31:40,828 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/popl20-queue-add-3.wvr.c [2024-11-07 11:31:40,837 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/a3313f4b2/f18b255465cf4aadb3a72b3db776f9a5/FLAG2d73f9a60 [2024-11-07 11:31:40,858 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/a3313f4b2/f18b255465cf4aadb3a72b3db776f9a5 [2024-11-07 11:31:40,861 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-07 11:31:40,863 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-07 11:31:40,864 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-07 11:31:40,865 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-07 11:31:40,869 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-07 11:31:40,870 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 11:31:40" (1/1) ... [2024-11-07 11:31:40,871 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4448e35c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:31:40, skipping insertion in model container [2024-11-07 11:31:40,871 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 11:31:40" (1/1) ... [2024-11-07 11:31:40,893 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-07 11:31:41,071 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-queue-add-3.wvr.c[3451,3464] [2024-11-07 11:31:41,082 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 11:31:41,095 INFO L200 MainTranslator]: Completed pre-run [2024-11-07 11:31:41,123 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-queue-add-3.wvr.c[3451,3464] [2024-11-07 11:31:41,129 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 11:31:41,147 INFO L204 MainTranslator]: Completed translation [2024-11-07 11:31:41,148 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:31:41 WrapperNode [2024-11-07 11:31:41,149 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-07 11:31:41,149 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-07 11:31:41,150 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-07 11:31:41,150 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-07 11:31:41,156 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:31:41" (1/1) ... [2024-11-07 11:31:41,162 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:31:41" (1/1) ... [2024-11-07 11:31:41,193 INFO L138 Inliner]: procedures = 24, calls = 40, calls flagged for inlining = 16, calls inlined = 18, statements flattened = 239 [2024-11-07 11:31:41,197 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-07 11:31:41,198 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-07 11:31:41,198 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-07 11:31:41,198 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-07 11:31:41,206 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:31:41" (1/1) ... [2024-11-07 11:31:41,208 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:31:41" (1/1) ... [2024-11-07 11:31:41,211 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:31:41" (1/1) ... [2024-11-07 11:31:41,225 INFO L175 MemorySlicer]: Split 9 memory accesses to 2 slices as follows [2, 7]. 78 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-11-07 11:31:41,225 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:31:41" (1/1) ... [2024-11-07 11:31:41,225 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:31:41" (1/1) ... [2024-11-07 11:31:41,232 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:31:41" (1/1) ... [2024-11-07 11:31:41,236 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:31:41" (1/1) ... [2024-11-07 11:31:41,241 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:31:41" (1/1) ... [2024-11-07 11:31:41,243 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:31:41" (1/1) ... [2024-11-07 11:31:41,250 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-07 11:31:41,251 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-07 11:31:41,253 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-07 11:31:41,253 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-07 11:31:41,254 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:31:41" (1/1) ... [2024-11-07 11:31:41,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 11:31:41,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:31:41,288 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 11:31:41,295 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 11:31:41,316 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-07 11:31:41,316 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-07 11:31:41,317 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-07 11:31:41,317 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-07 11:31:41,317 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-07 11:31:41,318 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-07 11:31:41,318 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-07 11:31:41,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-07 11:31:41,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-07 11:31:41,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-07 11:31:41,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-07 11:31:41,318 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-07 11:31:41,319 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-07 11:31:41,319 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-07 11:31:41,319 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-07 11:31:41,319 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-07 11:31:41,319 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-07 11:31:41,319 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-07 11:31:41,321 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 11:31:41,448 INFO L238 CfgBuilder]: Building ICFG [2024-11-07 11:31:41,452 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-07 11:31:41,891 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-07 11:31:41,891 INFO L287 CfgBuilder]: Performing block encoding [2024-11-07 11:31:42,209 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-07 11:31:42,209 INFO L316 CfgBuilder]: Removed 5 assume(true) statements. [2024-11-07 11:31:42,209 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 11:31:42 BoogieIcfgContainer [2024-11-07 11:31:42,209 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-07 11:31:42,213 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-07 11:31:42,213 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-07 11:31:42,218 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-07 11:31:42,218 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 11:31:40" (1/3) ... [2024-11-07 11:31:42,218 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33161cbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 11:31:42, skipping insertion in model container [2024-11-07 11:31:42,220 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:31:41" (2/3) ... [2024-11-07 11:31:42,220 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33161cbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 11:31:42, skipping insertion in model container [2024-11-07 11:31:42,221 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 11:31:42" (3/3) ... [2024-11-07 11:31:42,222 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-queue-add-3.wvr.c [2024-11-07 11:31:42,232 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-07 11:31:42,233 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-07 11:31:42,233 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-07 11:31:42,283 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-07 11:31:42,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 47 places, 44 transitions, 109 flow [2024-11-07 11:31:42,349 INFO L124 PetriNetUnfolderBase]: 7/41 cut-off events. [2024-11-07 11:31:42,351 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-07 11:31:42,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 41 events. 7/41 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 76 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2024-11-07 11:31:42,356 INFO L82 GeneralOperation]: Start removeDead. Operand has 47 places, 44 transitions, 109 flow [2024-11-07 11:31:42,358 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 40 transitions, 98 flow [2024-11-07 11:31:42,370 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 11:31:42,386 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;@8a1a2a9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 11:31:42,386 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-07 11:31:42,441 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-07 11:31:42,443 INFO L124 PetriNetUnfolderBase]: 7/39 cut-off events. [2024-11-07 11:31:42,443 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-07 11:31:42,444 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:31:42,444 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:31:42,445 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 11:31:42,449 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:31:42,449 INFO L85 PathProgramCache]: Analyzing trace with hash -618360053, now seen corresponding path program 1 times [2024-11-07 11:31:42,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:31:42,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566322670] [2024-11-07 11:31:42,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:31:42,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:31:42,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:31:42,677 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 11:31:42,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:31:42,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566322670] [2024-11-07 11:31:42,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566322670] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:31:42,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:31:42,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 11:31:42,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927747966] [2024-11-07 11:31:42,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:31:42,686 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-07 11:31:42,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:31:42,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-07 11:31:42,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-07 11:31:42,712 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 44 [2024-11-07 11:31:42,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 40 transitions, 98 flow. Second operand has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:31:42,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:31:42,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 44 [2024-11-07 11:31:42,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:31:42,986 INFO L124 PetriNetUnfolderBase]: 727/1253 cut-off events. [2024-11-07 11:31:42,987 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2024-11-07 11:31:42,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2347 conditions, 1253 events. 727/1253 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 6247 event pairs, 595 based on Foata normal form. 130/1241 useless extension candidates. Maximal degree in co-relation 2182. Up to 991 conditions per place. [2024-11-07 11:31:43,008 INFO L140 encePairwiseOnDemand]: 42/44 looper letters, 28 selfloop transitions, 0 changer transitions 0/38 dead transitions. [2024-11-07 11:31:43,009 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 38 transitions, 150 flow [2024-11-07 11:31:43,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-07 11:31:43,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-07 11:31:43,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 56 transitions. [2024-11-07 11:31:43,024 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6363636363636364 [2024-11-07 11:31:43,025 INFO L175 Difference]: Start difference. First operand has 43 places, 40 transitions, 98 flow. Second operand 2 states and 56 transitions. [2024-11-07 11:31:43,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 38 transitions, 150 flow [2024-11-07 11:31:43,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 38 transitions, 138 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-07 11:31:43,036 INFO L231 Difference]: Finished difference. Result has 38 places, 38 transitions, 82 flow [2024-11-07 11:31:43,038 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=82, PETRI_PLACES=38, PETRI_TRANSITIONS=38} [2024-11-07 11:31:43,042 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, -5 predicate places. [2024-11-07 11:31:43,044 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 38 transitions, 82 flow [2024-11-07 11:31:43,044 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:31:43,044 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:31:43,044 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:31:43,044 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-07 11:31:43,045 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 11:31:43,045 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:31:43,046 INFO L85 PathProgramCache]: Analyzing trace with hash -1956926361, now seen corresponding path program 1 times [2024-11-07 11:31:43,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:31:43,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815277827] [2024-11-07 11:31:43,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:31:43,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:31:43,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:31:43,307 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 11:31:43,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:31:43,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815277827] [2024-11-07 11:31:43,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815277827] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:31:43,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:31:43,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 11:31:43,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376730405] [2024-11-07 11:31:43,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:31:43,308 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 11:31:43,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:31:43,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 11:31:43,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 11:31:43,309 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 44 [2024-11-07 11:31:43,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 38 transitions, 82 flow. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 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 11:31:43,309 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:31:43,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 44 [2024-11-07 11:31:43,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:31:43,552 INFO L124 PetriNetUnfolderBase]: 733/1237 cut-off events. [2024-11-07 11:31:43,552 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2024-11-07 11:31:43,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2312 conditions, 1237 events. 733/1237 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 5962 event pairs, 189 based on Foata normal form. 27/1185 useless extension candidates. Maximal degree in co-relation 2309. Up to 875 conditions per place. [2024-11-07 11:31:43,563 INFO L140 encePairwiseOnDemand]: 40/44 looper letters, 37 selfloop transitions, 3 changer transitions 0/50 dead transitions. [2024-11-07 11:31:43,563 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 50 transitions, 188 flow [2024-11-07 11:31:43,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 11:31:43,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 11:31:43,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 80 transitions. [2024-11-07 11:31:43,566 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6060606060606061 [2024-11-07 11:31:43,567 INFO L175 Difference]: Start difference. First operand has 38 places, 38 transitions, 82 flow. Second operand 3 states and 80 transitions. [2024-11-07 11:31:43,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 50 transitions, 188 flow [2024-11-07 11:31:43,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 50 transitions, 188 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-07 11:31:43,569 INFO L231 Difference]: Finished difference. Result has 41 places, 40 transitions, 101 flow [2024-11-07 11:31:43,571 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=101, PETRI_PLACES=41, PETRI_TRANSITIONS=40} [2024-11-07 11:31:43,572 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, -2 predicate places. [2024-11-07 11:31:43,572 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 40 transitions, 101 flow [2024-11-07 11:31:43,572 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 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 11:31:43,572 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:31:43,572 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:31:43,572 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-07 11:31:43,572 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 11:31:43,573 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:31:43,573 INFO L85 PathProgramCache]: Analyzing trace with hash -431758607, now seen corresponding path program 2 times [2024-11-07 11:31:43,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:31:43,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492188710] [2024-11-07 11:31:43,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:31:43,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:31:43,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:31:43,738 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 11:31:43,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:31:43,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492188710] [2024-11-07 11:31:43,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492188710] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:31:43,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:31:43,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 11:31:43,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880892376] [2024-11-07 11:31:43,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:31:43,739 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 11:31:43,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:31:43,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 11:31:43,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 11:31:43,741 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 44 [2024-11-07 11:31:43,742 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 40 transitions, 101 flow. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 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 11:31:43,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:31:43,743 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 44 [2024-11-07 11:31:43,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:31:43,912 INFO L124 PetriNetUnfolderBase]: 663/1217 cut-off events. [2024-11-07 11:31:43,914 INFO L125 PetriNetUnfolderBase]: For 204/207 co-relation queries the response was YES. [2024-11-07 11:31:43,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2459 conditions, 1217 events. 663/1217 cut-off events. For 204/207 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 6040 event pairs, 248 based on Foata normal form. 26/1151 useless extension candidates. Maximal degree in co-relation 2454. Up to 555 conditions per place. [2024-11-07 11:31:43,923 INFO L140 encePairwiseOnDemand]: 41/44 looper letters, 40 selfloop transitions, 2 changer transitions 0/52 dead transitions. [2024-11-07 11:31:43,923 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 52 transitions, 217 flow [2024-11-07 11:31:43,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 11:31:43,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 11:31:43,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 80 transitions. [2024-11-07 11:31:43,925 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6060606060606061 [2024-11-07 11:31:43,926 INFO L175 Difference]: Start difference. First operand has 41 places, 40 transitions, 101 flow. Second operand 3 states and 80 transitions. [2024-11-07 11:31:43,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 52 transitions, 217 flow [2024-11-07 11:31:43,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 52 transitions, 214 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-07 11:31:43,929 INFO L231 Difference]: Finished difference. Result has 43 places, 41 transitions, 110 flow [2024-11-07 11:31:43,929 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=110, PETRI_PLACES=43, PETRI_TRANSITIONS=41} [2024-11-07 11:31:43,930 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 0 predicate places. [2024-11-07 11:31:43,931 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 41 transitions, 110 flow [2024-11-07 11:31:43,931 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 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 11:31:43,931 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:31:43,931 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:31:43,932 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-07 11:31:43,932 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 11:31:43,932 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:31:43,933 INFO L85 PathProgramCache]: Analyzing trace with hash 215404707, now seen corresponding path program 3 times [2024-11-07 11:31:43,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:31:43,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128501262] [2024-11-07 11:31:43,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:31:43,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:31:43,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:31:44,141 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 11:31:44,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:31:44,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128501262] [2024-11-07 11:31:44,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128501262] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:31:44,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:31:44,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 11:31:44,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867593874] [2024-11-07 11:31:44,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:31:44,142 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 11:31:44,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:31:44,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 11:31:44,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 11:31:44,143 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 44 [2024-11-07 11:31:44,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 41 transitions, 110 flow. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 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 11:31:44,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:31:44,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 44 [2024-11-07 11:31:44,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:31:44,351 INFO L124 PetriNetUnfolderBase]: 711/1316 cut-off events. [2024-11-07 11:31:44,351 INFO L125 PetriNetUnfolderBase]: For 284/286 co-relation queries the response was YES. [2024-11-07 11:31:44,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2787 conditions, 1316 events. 711/1316 cut-off events. For 284/286 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 6534 event pairs, 521 based on Foata normal form. 27/1251 useless extension candidates. Maximal degree in co-relation 2781. Up to 950 conditions per place. [2024-11-07 11:31:44,360 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 30 selfloop transitions, 2 changer transitions 13/55 dead transitions. [2024-11-07 11:31:44,361 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 55 transitions, 231 flow [2024-11-07 11:31:44,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 11:31:44,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 11:31:44,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 96 transitions. [2024-11-07 11:31:44,363 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5454545454545454 [2024-11-07 11:31:44,363 INFO L175 Difference]: Start difference. First operand has 43 places, 41 transitions, 110 flow. Second operand 4 states and 96 transitions. [2024-11-07 11:31:44,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 55 transitions, 231 flow [2024-11-07 11:31:44,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 55 transitions, 229 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-07 11:31:44,367 INFO L231 Difference]: Finished difference. Result has 47 places, 42 transitions, 124 flow [2024-11-07 11:31:44,367 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=124, PETRI_PLACES=47, PETRI_TRANSITIONS=42} [2024-11-07 11:31:44,368 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 4 predicate places. [2024-11-07 11:31:44,368 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 42 transitions, 124 flow [2024-11-07 11:31:44,368 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 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 11:31:44,369 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:31:44,369 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:31:44,369 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-07 11:31:44,369 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 11:31:44,369 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:31:44,370 INFO L85 PathProgramCache]: Analyzing trace with hash -385150933, now seen corresponding path program 1 times [2024-11-07 11:31:44,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:31:44,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116843679] [2024-11-07 11:31:44,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:31:44,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:31:44,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:31:44,537 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 11:31:44,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:31:44,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116843679] [2024-11-07 11:31:44,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116843679] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:31:44,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:31:44,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-07 11:31:44,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298529946] [2024-11-07 11:31:44,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:31:44,538 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 11:31:44,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:31:44,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 11:31:44,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 11:31:44,538 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 44 [2024-11-07 11:31:44,539 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 42 transitions, 124 flow. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 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 11:31:44,539 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:31:44,539 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 44 [2024-11-07 11:31:44,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:31:44,767 INFO L124 PetriNetUnfolderBase]: 905/1642 cut-off events. [2024-11-07 11:31:44,767 INFO L125 PetriNetUnfolderBase]: For 471/476 co-relation queries the response was YES. [2024-11-07 11:31:44,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3564 conditions, 1642 events. 905/1642 cut-off events. For 471/476 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 8514 event pairs, 676 based on Foata normal form. 32/1581 useless extension candidates. Maximal degree in co-relation 3556. Up to 951 conditions per place. [2024-11-07 11:31:44,779 INFO L140 encePairwiseOnDemand]: 40/44 looper letters, 31 selfloop transitions, 2 changer transitions 19/62 dead transitions. [2024-11-07 11:31:44,780 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 62 transitions, 286 flow [2024-11-07 11:31:44,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 11:31:44,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 11:31:44,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 99 transitions. [2024-11-07 11:31:44,781 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5625 [2024-11-07 11:31:44,781 INFO L175 Difference]: Start difference. First operand has 47 places, 42 transitions, 124 flow. Second operand 4 states and 99 transitions. [2024-11-07 11:31:44,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 62 transitions, 286 flow [2024-11-07 11:31:44,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 62 transitions, 274 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-11-07 11:31:44,784 INFO L231 Difference]: Finished difference. Result has 49 places, 43 transitions, 130 flow [2024-11-07 11:31:44,786 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=130, PETRI_PLACES=49, PETRI_TRANSITIONS=43} [2024-11-07 11:31:44,787 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 6 predicate places. [2024-11-07 11:31:44,787 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 43 transitions, 130 flow [2024-11-07 11:31:44,788 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 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 11:31:44,788 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:31:44,788 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:31:44,789 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-07 11:31:44,789 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 11:31:44,790 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:31:44,790 INFO L85 PathProgramCache]: Analyzing trace with hash -2147043510, now seen corresponding path program 1 times [2024-11-07 11:31:44,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:31:44,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159470358] [2024-11-07 11:31:44,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:31:44,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:31:44,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:31:45,092 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 11:31:45,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:31:45,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159470358] [2024-11-07 11:31:45,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159470358] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:31:45,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:31:45,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-07 11:31:45,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272823219] [2024-11-07 11:31:45,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:31:45,095 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-07 11:31:45,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:31:45,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-07 11:31:45,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-07 11:31:45,117 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-11-07 11:31:45,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 43 transitions, 130 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 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 11:31:45,118 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:31:45,118 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-11-07 11:31:45,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:31:45,498 INFO L124 PetriNetUnfolderBase]: 1274/2112 cut-off events. [2024-11-07 11:31:45,499 INFO L125 PetriNetUnfolderBase]: For 619/631 co-relation queries the response was YES. [2024-11-07 11:31:45,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4777 conditions, 2112 events. 1274/2112 cut-off events. For 619/631 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 11525 event pairs, 342 based on Foata normal form. 1/2056 useless extension candidates. Maximal degree in co-relation 4768. Up to 775 conditions per place. [2024-11-07 11:31:45,514 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 78 selfloop transitions, 9 changer transitions 10/105 dead transitions. [2024-11-07 11:31:45,515 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 105 transitions, 501 flow [2024-11-07 11:31:45,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-07 11:31:45,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-07 11:31:45,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 181 transitions. [2024-11-07 11:31:45,517 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5142045454545454 [2024-11-07 11:31:45,518 INFO L175 Difference]: Start difference. First operand has 49 places, 43 transitions, 130 flow. Second operand 8 states and 181 transitions. [2024-11-07 11:31:45,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 105 transitions, 501 flow [2024-11-07 11:31:45,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 105 transitions, 491 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-11-07 11:31:45,522 INFO L231 Difference]: Finished difference. Result has 56 places, 49 transitions, 174 flow [2024-11-07 11:31:45,522 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=174, PETRI_PLACES=56, PETRI_TRANSITIONS=49} [2024-11-07 11:31:45,523 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 13 predicate places. [2024-11-07 11:31:45,524 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 49 transitions, 174 flow [2024-11-07 11:31:45,524 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 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 11:31:45,524 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:31:45,524 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:31:45,525 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-07 11:31:45,525 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 11:31:45,525 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:31:45,525 INFO L85 PathProgramCache]: Analyzing trace with hash 795121444, now seen corresponding path program 1 times [2024-11-07 11:31:45,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:31:45,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221423955] [2024-11-07 11:31:45,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:31:45,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:31:45,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:31:45,748 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 11:31:45,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:31:45,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221423955] [2024-11-07 11:31:45,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221423955] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:31:45,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1791610728] [2024-11-07 11:31:45,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:31:45,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:31:45,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:31:45,752 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 11:31:45,754 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 11:31:45,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:31:45,869 INFO L255 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-07 11:31:45,873 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:31:46,048 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 11:31:46,048 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:31:46,213 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 11:31:46,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1791610728] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:31:46,214 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:31:46,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-07 11:31:46,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774148308] [2024-11-07 11:31:46,216 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:31:46,216 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-07 11:31:46,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:31:46,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-07 11:31:46,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-07 11:31:46,217 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 44 [2024-11-07 11:31:46,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 49 transitions, 174 flow. Second operand has 12 states, 12 states have (on average 17.166666666666668) internal successors, (206), 12 states have internal predecessors, (206), 0 states have call successors, (0), 0 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 11:31:46,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:31:46,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 44 [2024-11-07 11:31:46,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:31:46,664 INFO L124 PetriNetUnfolderBase]: 1661/3258 cut-off events. [2024-11-07 11:31:46,667 INFO L125 PetriNetUnfolderBase]: For 1426/1429 co-relation queries the response was YES. [2024-11-07 11:31:46,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7606 conditions, 3258 events. 1661/3258 cut-off events. For 1426/1429 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 21574 event pairs, 1040 based on Foata normal form. 114/3222 useless extension candidates. Maximal degree in co-relation 7595. Up to 1488 conditions per place. [2024-11-07 11:31:46,692 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 66 selfloop transitions, 5 changer transitions 4/88 dead transitions. [2024-11-07 11:31:46,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 88 transitions, 456 flow [2024-11-07 11:31:46,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-07 11:31:46,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-07 11:31:46,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 144 transitions. [2024-11-07 11:31:46,695 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5454545454545454 [2024-11-07 11:31:46,695 INFO L175 Difference]: Start difference. First operand has 56 places, 49 transitions, 174 flow. Second operand 6 states and 144 transitions. [2024-11-07 11:31:46,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 88 transitions, 456 flow [2024-11-07 11:31:46,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 88 transitions, 449 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-07 11:31:46,700 INFO L231 Difference]: Finished difference. Result has 61 places, 52 transitions, 212 flow [2024-11-07 11:31:46,700 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=212, PETRI_PLACES=61, PETRI_TRANSITIONS=52} [2024-11-07 11:31:46,701 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 18 predicate places. [2024-11-07 11:31:46,701 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 52 transitions, 212 flow [2024-11-07 11:31:46,701 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 17.166666666666668) internal successors, (206), 12 states have internal predecessors, (206), 0 states have call successors, (0), 0 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 11:31:46,701 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:31:46,701 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:31:46,731 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 11:31:46,902 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:31:46,902 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 11:31:46,902 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:31:46,903 INFO L85 PathProgramCache]: Analyzing trace with hash 171620424, now seen corresponding path program 2 times [2024-11-07 11:31:46,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:31:46,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129344980] [2024-11-07 11:31:46,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:31:46,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:31:46,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:31:47,652 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 11:31:47,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:31:47,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129344980] [2024-11-07 11:31:47,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129344980] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:31:47,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [62896300] [2024-11-07 11:31:47,653 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 11:31:47,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:31:47,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:31:47,655 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 11:31:47,658 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 11:31:47,774 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 11:31:47,774 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:31:47,776 INFO L255 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-07 11:31:47,778 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:31:48,065 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 11:31:48,066 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 15 [2024-11-07 11:31:48,303 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 11:31:48,303 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:31:48,508 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-07 11:31:48,508 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 11 [2024-11-07 11:31:48,726 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 11:31:48,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [62896300] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:31:48,727 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:31:48,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2024-11-07 11:31:48,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377379327] [2024-11-07 11:31:48,727 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:31:48,728 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-07 11:31:48,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:31:48,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-07 11:31:48,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=370, Unknown=0, NotChecked=0, Total=462 [2024-11-07 11:31:48,783 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-11-07 11:31:48,784 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 52 transitions, 212 flow. Second operand has 22 states, 22 states have (on average 14.318181818181818) internal successors, (315), 22 states have internal predecessors, (315), 0 states have call successors, (0), 0 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 11:31:48,784 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:31:48,784 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-11-07 11:31:48,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:31:51,757 INFO L124 PetriNetUnfolderBase]: 7995/13529 cut-off events. [2024-11-07 11:31:51,757 INFO L125 PetriNetUnfolderBase]: For 8916/9503 co-relation queries the response was YES. [2024-11-07 11:31:51,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33691 conditions, 13529 events. 7995/13529 cut-off events. For 8916/9503 co-relation queries the response was YES. Maximal size of possible extension queue 679. Compared 98790 event pairs, 719 based on Foata normal form. 54/13077 useless extension candidates. Maximal degree in co-relation 33677. Up to 2071 conditions per place. [2024-11-07 11:31:51,882 INFO L140 encePairwiseOnDemand]: 36/44 looper letters, 312 selfloop transitions, 49 changer transitions 0/372 dead transitions. [2024-11-07 11:31:51,883 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 372 transitions, 2003 flow [2024-11-07 11:31:51,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-07 11:31:51,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-11-07 11:31:51,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 648 transitions. [2024-11-07 11:31:51,886 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.525974025974026 [2024-11-07 11:31:51,886 INFO L175 Difference]: Start difference. First operand has 61 places, 52 transitions, 212 flow. Second operand 28 states and 648 transitions. [2024-11-07 11:31:51,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 372 transitions, 2003 flow [2024-11-07 11:31:51,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 372 transitions, 1936 flow, removed 31 selfloop flow, removed 3 redundant places. [2024-11-07 11:31:51,915 INFO L231 Difference]: Finished difference. Result has 96 places, 101 transitions, 584 flow [2024-11-07 11:31:51,916 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=584, PETRI_PLACES=96, PETRI_TRANSITIONS=101} [2024-11-07 11:31:51,917 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 53 predicate places. [2024-11-07 11:31:51,917 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 101 transitions, 584 flow [2024-11-07 11:31:51,918 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 14.318181818181818) internal successors, (315), 22 states have internal predecessors, (315), 0 states have call successors, (0), 0 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 11:31:51,918 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:31:51,918 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:31:51,936 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-07 11:31:52,119 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:31:52,121 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 11:31:52,121 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:31:52,121 INFO L85 PathProgramCache]: Analyzing trace with hash -2096014600, now seen corresponding path program 1 times [2024-11-07 11:31:52,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:31:52,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189159] [2024-11-07 11:31:52,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:31:52,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:31:52,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:31:52,228 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 11:31:52,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:31:52,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189159] [2024-11-07 11:31:52,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189159] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:31:52,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:31:52,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 11:31:52,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788524020] [2024-11-07 11:31:52,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:31:52,229 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 11:31:52,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:31:52,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 11:31:52,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-07 11:31:52,230 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 44 [2024-11-07 11:31:52,230 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 101 transitions, 584 flow. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 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 11:31:52,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:31:52,230 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 44 [2024-11-07 11:31:52,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:31:53,806 INFO L124 PetriNetUnfolderBase]: 9544/18827 cut-off events. [2024-11-07 11:31:53,806 INFO L125 PetriNetUnfolderBase]: For 34088/35045 co-relation queries the response was YES. [2024-11-07 11:31:53,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52169 conditions, 18827 events. 9544/18827 cut-off events. For 34088/35045 co-relation queries the response was YES. Maximal size of possible extension queue 837. Compared 168032 event pairs, 2474 based on Foata normal form. 414/18827 useless extension candidates. Maximal degree in co-relation 52145. Up to 5593 conditions per place. [2024-11-07 11:31:53,955 INFO L140 encePairwiseOnDemand]: 41/44 looper letters, 154 selfloop transitions, 6 changer transitions 0/183 dead transitions. [2024-11-07 11:31:53,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 183 transitions, 1391 flow [2024-11-07 11:31:53,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 11:31:53,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 11:31:53,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 116 transitions. [2024-11-07 11:31:53,957 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6590909090909091 [2024-11-07 11:31:53,957 INFO L175 Difference]: Start difference. First operand has 96 places, 101 transitions, 584 flow. Second operand 4 states and 116 transitions. [2024-11-07 11:31:53,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 183 transitions, 1391 flow [2024-11-07 11:31:54,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 183 transitions, 1229 flow, removed 73 selfloop flow, removed 5 redundant places. [2024-11-07 11:31:54,086 INFO L231 Difference]: Finished difference. Result has 96 places, 105 transitions, 545 flow [2024-11-07 11:31:54,087 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=492, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=545, PETRI_PLACES=96, PETRI_TRANSITIONS=105} [2024-11-07 11:31:54,087 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 53 predicate places. [2024-11-07 11:31:54,089 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 105 transitions, 545 flow [2024-11-07 11:31:54,089 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 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 11:31:54,089 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:31:54,089 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:31:54,090 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-07 11:31:54,090 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 11:31:54,090 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:31:54,090 INFO L85 PathProgramCache]: Analyzing trace with hash -572065220, now seen corresponding path program 3 times [2024-11-07 11:31:54,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:31:54,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212520246] [2024-11-07 11:31:54,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:31:54,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:31:54,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:31:54,792 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 11:31:54,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:31:54,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212520246] [2024-11-07 11:31:54,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212520246] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:31:54,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1673558984] [2024-11-07 11:31:54,793 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-07 11:31:54,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:31:54,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:31:54,795 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 11:31:54,797 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 11:31:54,900 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-07 11:31:54,900 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:31:54,902 INFO L255 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-07 11:31:54,904 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:31:55,212 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-07 11:31:55,213 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2024-11-07 11:31:55,238 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 11:31:55,239 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:31:55,464 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-07 11:31:55,464 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 12 [2024-11-07 11:31:55,739 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 11:31:55,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1673558984] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:31:55,740 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:31:55,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2024-11-07 11:31:55,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297759674] [2024-11-07 11:31:55,740 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:31:55,740 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-07 11:31:55,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:31:55,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-07 11:31:55,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=373, Unknown=0, NotChecked=0, Total=462 [2024-11-07 11:31:55,768 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-11-07 11:31:55,769 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 105 transitions, 545 flow. Second operand has 22 states, 22 states have (on average 14.409090909090908) internal successors, (317), 22 states have internal predecessors, (317), 0 states have call successors, (0), 0 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 11:31:55,770 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:31:55,770 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-11-07 11:31:55,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:31:59,228 INFO L124 PetriNetUnfolderBase]: 17919/30240 cut-off events. [2024-11-07 11:31:59,228 INFO L125 PetriNetUnfolderBase]: For 89881/91772 co-relation queries the response was YES. [2024-11-07 11:31:59,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96607 conditions, 30240 events. 17919/30240 cut-off events. For 89881/91772 co-relation queries the response was YES. Maximal size of possible extension queue 1242. Compared 243166 event pairs, 3024 based on Foata normal form. 360/30424 useless extension candidates. Maximal degree in co-relation 96582. Up to 7678 conditions per place. [2024-11-07 11:31:59,505 INFO L140 encePairwiseOnDemand]: 36/44 looper letters, 294 selfloop transitions, 59 changer transitions 0/364 dead transitions. [2024-11-07 11:31:59,506 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 364 transitions, 2556 flow [2024-11-07 11:31:59,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-07 11:31:59,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-07 11:31:59,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 500 transitions. [2024-11-07 11:31:59,511 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5411255411255411 [2024-11-07 11:31:59,511 INFO L175 Difference]: Start difference. First operand has 96 places, 105 transitions, 545 flow. Second operand 21 states and 500 transitions. [2024-11-07 11:31:59,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 364 transitions, 2556 flow [2024-11-07 11:31:59,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 364 transitions, 2512 flow, removed 22 selfloop flow, removed 0 redundant places. [2024-11-07 11:31:59,690 INFO L231 Difference]: Finished difference. Result has 128 places, 133 transitions, 1019 flow [2024-11-07 11:31:59,690 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=539, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1019, PETRI_PLACES=128, PETRI_TRANSITIONS=133} [2024-11-07 11:31:59,691 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 85 predicate places. [2024-11-07 11:31:59,691 INFO L471 AbstractCegarLoop]: Abstraction has has 128 places, 133 transitions, 1019 flow [2024-11-07 11:31:59,691 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 14.409090909090908) internal successors, (317), 22 states have internal predecessors, (317), 0 states have call successors, (0), 0 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 11:31:59,691 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:31:59,692 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:31:59,707 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 11:31:59,895 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:31:59,896 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 11:31:59,896 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:31:59,896 INFO L85 PathProgramCache]: Analyzing trace with hash -484837126, now seen corresponding path program 4 times [2024-11-07 11:31:59,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:31:59,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489208252] [2024-11-07 11:31:59,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:31:59,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:31:59,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:32:01,039 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 11:32:01,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:32:01,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489208252] [2024-11-07 11:32:01,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489208252] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:32:01,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1621975967] [2024-11-07 11:32:01,040 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-07 11:32:01,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:32:01,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:32:01,042 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 11:32:01,044 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 11:32:01,152 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-07 11:32:01,152 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:32:01,154 INFO L255 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-07 11:32:01,156 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:32:01,238 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-07 11:32:01,238 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:32:01,292 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-07 11:32:01,292 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 12 [2024-11-07 11:32:01,316 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-07 11:32:01,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1621975967] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:32:01,317 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:32:01,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 4, 4] total 14 [2024-11-07 11:32:01,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636452313] [2024-11-07 11:32:01,317 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:32:01,318 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-07 11:32:01,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:32:01,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-07 11:32:01,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2024-11-07 11:32:01,342 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-11-07 11:32:01,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 133 transitions, 1019 flow. Second operand has 15 states, 15 states have (on average 15.066666666666666) internal successors, (226), 15 states have internal predecessors, (226), 0 states have call successors, (0), 0 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 11:32:01,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:32:01,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-11-07 11:32:01,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:32:04,476 INFO L124 PetriNetUnfolderBase]: 18744/32650 cut-off events. [2024-11-07 11:32:04,477 INFO L125 PetriNetUnfolderBase]: For 155901/157692 co-relation queries the response was YES. [2024-11-07 11:32:04,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114780 conditions, 32650 events. 18744/32650 cut-off events. For 155901/157692 co-relation queries the response was YES. Maximal size of possible extension queue 1260. Compared 273364 event pairs, 4615 based on Foata normal form. 184/32570 useless extension candidates. Maximal degree in co-relation 114743. Up to 16783 conditions per place. [2024-11-07 11:32:04,823 INFO L140 encePairwiseOnDemand]: 36/44 looper letters, 189 selfloop transitions, 62 changer transitions 0/262 dead transitions. [2024-11-07 11:32:04,824 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 262 transitions, 2376 flow [2024-11-07 11:32:04,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-07 11:32:04,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-07 11:32:04,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 277 transitions. [2024-11-07 11:32:04,825 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48426573426573427 [2024-11-07 11:32:04,826 INFO L175 Difference]: Start difference. First operand has 128 places, 133 transitions, 1019 flow. Second operand 13 states and 277 transitions. [2024-11-07 11:32:04,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 262 transitions, 2376 flow [2024-11-07 11:32:05,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 262 transitions, 2164 flow, removed 97 selfloop flow, removed 6 redundant places. [2024-11-07 11:32:05,555 INFO L231 Difference]: Finished difference. Result has 133 places, 149 transitions, 1233 flow [2024-11-07 11:32:05,556 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=871, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1233, PETRI_PLACES=133, PETRI_TRANSITIONS=149} [2024-11-07 11:32:05,556 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 90 predicate places. [2024-11-07 11:32:05,556 INFO L471 AbstractCegarLoop]: Abstraction has has 133 places, 149 transitions, 1233 flow [2024-11-07 11:32:05,557 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 15.066666666666666) internal successors, (226), 15 states have internal predecessors, (226), 0 states have call successors, (0), 0 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 11:32:05,557 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:32:05,557 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:32:05,573 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 11:32:05,757 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,SelfDestructingSolverStorable10 [2024-11-07 11:32:05,758 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 11:32:05,758 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:32:05,758 INFO L85 PathProgramCache]: Analyzing trace with hash -1354245147, now seen corresponding path program 1 times [2024-11-07 11:32:05,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:32:05,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781559788] [2024-11-07 11:32:05,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:32:05,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:32:05,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:32:05,938 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-07 11:32:05,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:32:05,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781559788] [2024-11-07 11:32:05,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781559788] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:32:05,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1179375524] [2024-11-07 11:32:05,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:32:05,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:32:05,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:32:05,941 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 11:32:05,943 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 11:32:06,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:32:06,046 INFO L255 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-07 11:32:06,048 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:32:06,140 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-07 11:32:06,140 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:32:06,258 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-07 11:32:06,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1179375524] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:32:06,259 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:32:06,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-11-07 11:32:06,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524602467] [2024-11-07 11:32:06,260 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:32:06,260 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-07 11:32:06,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:32:06,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-07 11:32:06,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-07 11:32:06,261 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 44 [2024-11-07 11:32:06,262 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 149 transitions, 1233 flow. Second operand has 12 states, 12 states have (on average 17.166666666666668) internal successors, (206), 12 states have internal predecessors, (206), 0 states have call successors, (0), 0 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 11:32:06,262 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:32:06,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 44 [2024-11-07 11:32:06,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:32:09,664 INFO L124 PetriNetUnfolderBase]: 18961/36814 cut-off events. [2024-11-07 11:32:09,664 INFO L125 PetriNetUnfolderBase]: For 178968/180974 co-relation queries the response was YES. [2024-11-07 11:32:09,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126410 conditions, 36814 events. 18961/36814 cut-off events. For 178968/180974 co-relation queries the response was YES. Maximal size of possible extension queue 1122. Compared 347192 event pairs, 11178 based on Foata normal form. 763/36812 useless extension candidates. Maximal degree in co-relation 126373. Up to 20672 conditions per place. [2024-11-07 11:32:10,262 INFO L140 encePairwiseOnDemand]: 40/44 looper letters, 112 selfloop transitions, 6 changer transitions 104/254 dead transitions. [2024-11-07 11:32:10,262 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 254 transitions, 2506 flow [2024-11-07 11:32:10,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-07 11:32:10,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-07 11:32:10,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 142 transitions. [2024-11-07 11:32:10,264 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5378787878787878 [2024-11-07 11:32:10,264 INFO L175 Difference]: Start difference. First operand has 133 places, 149 transitions, 1233 flow. Second operand 6 states and 142 transitions. [2024-11-07 11:32:10,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 254 transitions, 2506 flow [2024-11-07 11:32:10,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 254 transitions, 2489 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-11-07 11:32:10,999 INFO L231 Difference]: Finished difference. Result has 137 places, 150 transitions, 1244 flow [2024-11-07 11:32:10,999 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1216, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1244, PETRI_PLACES=137, PETRI_TRANSITIONS=150} [2024-11-07 11:32:10,999 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 94 predicate places. [2024-11-07 11:32:10,999 INFO L471 AbstractCegarLoop]: Abstraction has has 137 places, 150 transitions, 1244 flow [2024-11-07 11:32:11,000 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 17.166666666666668) internal successors, (206), 12 states have internal predecessors, (206), 0 states have call successors, (0), 0 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 11:32:11,000 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:32:11,000 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:32:11,011 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 11:32:11,200 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-07 11:32:11,200 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 11:32:11,201 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:32:11,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1578607418, now seen corresponding path program 2 times [2024-11-07 11:32:11,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:32:11,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254912900] [2024-11-07 11:32:11,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:32:11,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:32:11,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:32:11,994 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-07 11:32:11,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:32:11,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254912900] [2024-11-07 11:32:11,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254912900] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:32:11,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2070477495] [2024-11-07 11:32:11,995 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 11:32:11,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:32:11,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:32:11,997 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 11:32:11,999 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 11:32:12,098 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 11:32:12,098 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:32:12,101 INFO L255 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-07 11:32:12,103 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:32:12,477 INFO L349 Elim1Store]: treesize reduction 19, result has 5.0 percent of original size [2024-11-07 11:32:12,477 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 7 [2024-11-07 11:32:12,506 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 11:32:12,507 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:32:12,979 INFO L349 Elim1Store]: treesize reduction 23, result has 75.3 percent of original size [2024-11-07 11:32:12,980 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 45 treesize of output 82 [2024-11-07 11:32:13,322 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-07 11:32:13,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2070477495] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:32:13,323 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:32:13,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 31 [2024-11-07 11:32:13,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673814951] [2024-11-07 11:32:13,323 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:32:13,324 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-07 11:32:13,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:32:13,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-07 11:32:13,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=859, Unknown=0, NotChecked=0, Total=992 [2024-11-07 11:32:13,459 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-11-07 11:32:13,460 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 150 transitions, 1244 flow. Second operand has 32 states, 32 states have (on average 11.90625) internal successors, (381), 32 states have internal predecessors, (381), 0 states have call successors, (0), 0 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 11:32:13,460 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:32:13,460 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-11-07 11:32:13,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:32:26,785 INFO L124 PetriNetUnfolderBase]: 70036/116228 cut-off events. [2024-11-07 11:32:26,785 INFO L125 PetriNetUnfolderBase]: For 595730/596317 co-relation queries the response was YES. [2024-11-07 11:32:27,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 415935 conditions, 116228 events. 70036/116228 cut-off events. For 595730/596317 co-relation queries the response was YES. Maximal size of possible extension queue 3895. Compared 1076270 event pairs, 4100 based on Foata normal form. 5260/121093 useless extension candidates. Maximal degree in co-relation 415894. Up to 13937 conditions per place. [2024-11-07 11:32:28,449 INFO L140 encePairwiseOnDemand]: 30/44 looper letters, 776 selfloop transitions, 196 changer transitions 198/1179 dead transitions. [2024-11-07 11:32:28,449 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 1179 transitions, 12180 flow [2024-11-07 11:32:28,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-07 11:32:28,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2024-11-07 11:32:28,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 767 transitions. [2024-11-07 11:32:28,452 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45873205741626794 [2024-11-07 11:32:28,452 INFO L175 Difference]: Start difference. First operand has 137 places, 150 transitions, 1244 flow. Second operand 38 states and 767 transitions. [2024-11-07 11:32:28,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 1179 transitions, 12180 flow [2024-11-07 11:32:33,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 1179 transitions, 12130 flow, removed 20 selfloop flow, removed 4 redundant places. [2024-11-07 11:32:33,265 INFO L231 Difference]: Finished difference. Result has 183 places, 327 transitions, 3709 flow [2024-11-07 11:32:33,265 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1224, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=3709, PETRI_PLACES=183, PETRI_TRANSITIONS=327} [2024-11-07 11:32:33,265 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 140 predicate places. [2024-11-07 11:32:33,265 INFO L471 AbstractCegarLoop]: Abstraction has has 183 places, 327 transitions, 3709 flow [2024-11-07 11:32:33,266 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 11.90625) internal successors, (381), 32 states have internal predecessors, (381), 0 states have call successors, (0), 0 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 11:32:33,266 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:32:33,266 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:32:33,278 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 11:32:33,466 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,SelfDestructingSolverStorable12 [2024-11-07 11:32:33,467 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 11:32:33,467 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:32:33,467 INFO L85 PathProgramCache]: Analyzing trace with hash 1867121982, now seen corresponding path program 1 times [2024-11-07 11:32:33,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:32:33,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670658164] [2024-11-07 11:32:33,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:32:33,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:32:33,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:32:33,620 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-07 11:32:33,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:32:33,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670658164] [2024-11-07 11:32:33,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670658164] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:32:33,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1802250559] [2024-11-07 11:32:33,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:32:33,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:32:33,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:32:33,623 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 11:32:33,625 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 11:32:33,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:32:33,739 INFO L255 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-07 11:32:33,741 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:32:33,836 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-07 11:32:33,836 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:32:33,953 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-07 11:32:33,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1802250559] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:32:33,953 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:32:33,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 12 [2024-11-07 11:32:33,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168862357] [2024-11-07 11:32:33,953 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:32:33,954 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-07 11:32:33,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:32:33,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-07 11:32:33,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2024-11-07 11:32:33,955 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 44 [2024-11-07 11:32:33,955 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 327 transitions, 3709 flow. Second operand has 13 states, 13 states have (on average 16.384615384615383) internal successors, (213), 13 states have internal predecessors, (213), 0 states have call successors, (0), 0 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 11:32:33,955 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:32:33,955 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 44 [2024-11-07 11:32:33,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand