./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread-theta/unwind2-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) 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/AutomizerMemDerefMemtrack.xml', '-i', '../sv-benchmarks/c/pthread-theta/unwind2-1.i', '-s', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-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 valid-free) )\nCHECK( init(main()), LTL(G valid-deref) )\nCHECK( init(main()), LTL(G valid-memtrack) )\n\n', '--witnessprinter.graph.data.producer', 'Automizer', '--witnessprinter.graph.data.architecture', '32bit', '--witnessprinter.graph.data.programhash', '84506b1a5f2f1a1be74252915eb3882c15865a3a673842f14f5796dbb89eb736'] 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/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/pthread-theta/unwind2-1.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 84506b1a5f2f1a1be74252915eb3882c15865a3a673842f14f5796dbb89eb736 --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-07 19:42:07,742 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-07 19:42:07,828 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-07 19:42:07,833 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-07 19:42:07,833 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-07 19:42:07,854 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-07 19:42:07,854 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-07 19:42:07,855 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-07 19:42:07,855 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-07 19:42:07,855 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-07 19:42:07,855 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-07 19:42:07,855 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-07 19:42:07,857 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-07 19:42:07,857 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-07 19:42:07,858 INFO L153 SettingsManager]: * Use SBE=true [2024-11-07 19:42:07,859 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-07 19:42:07,859 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-07 19:42:07,859 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-07 19:42:07,859 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-07 19:42:07,859 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-07 19:42:07,859 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-07 19:42:07,859 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-07 19:42:07,859 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-07 19:42:07,859 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-07 19:42:07,859 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-07 19:42:07,860 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-07 19:42:07,860 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-07 19:42:07,860 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-07 19:42:07,860 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-07 19:42:07,860 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-07 19:42:07,860 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-07 19:42:07,860 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-07 19:42:07,860 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-07 19:42:07,861 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 19:42:07,861 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-07 19:42:07,861 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-07 19:42:07,862 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-07 19:42:07,862 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-07 19:42:07,862 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-07 19:42:07,862 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-07 19:42:07,862 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-07 19:42:07,862 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-07 19:42:07,862 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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) 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 -> 84506b1a5f2f1a1be74252915eb3882c15865a3a673842f14f5796dbb89eb736 [2024-11-07 19:42:08,119 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-07 19:42:08,126 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-07 19:42:08,132 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-07 19:42:08,133 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-07 19:42:08,133 INFO L274 PluginConnector]: CDTParser initialized [2024-11-07 19:42:08,135 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-theta/unwind2-1.i [2024-11-07 19:42:09,378 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-07 19:42:09,639 INFO L384 CDTParser]: Found 1 translation units. [2024-11-07 19:42:09,640 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-theta/unwind2-1.i [2024-11-07 19:42:09,653 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/5ae76cb2c/b99b425c615849c487afe415819321c1/FLAG1647d7890 [2024-11-07 19:42:09,957 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/5ae76cb2c/b99b425c615849c487afe415819321c1 [2024-11-07 19:42:09,959 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-07 19:42:09,960 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-07 19:42:09,961 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-07 19:42:09,961 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-07 19:42:09,964 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-07 19:42:09,965 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:42:09" (1/1) ... [2024-11-07 19:42:09,965 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d659ea5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:42:09, skipping insertion in model container [2024-11-07 19:42:09,965 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:42:09" (1/1) ... [2024-11-07 19:42:09,988 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-07 19:42:10,184 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 19:42:10,190 INFO L200 MainTranslator]: Completed pre-run [2024-11-07 19:42:10,221 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 19:42:10,246 INFO L204 MainTranslator]: Completed translation [2024-11-07 19:42:10,247 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:42:10 WrapperNode [2024-11-07 19:42:10,247 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-07 19:42:10,248 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-07 19:42:10,248 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-07 19:42:10,249 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-07 19:42:10,252 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:42:10" (1/1) ... [2024-11-07 19:42:10,263 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:42:10" (1/1) ... [2024-11-07 19:42:10,280 INFO L138 Inliner]: procedures = 169, calls = 12, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 85 [2024-11-07 19:42:10,281 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-07 19:42:10,282 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-07 19:42:10,282 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-07 19:42:10,282 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-07 19:42:10,287 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:42:10" (1/1) ... [2024-11-07 19:42:10,288 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:42:10" (1/1) ... [2024-11-07 19:42:10,291 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:42:10" (1/1) ... [2024-11-07 19:42:10,305 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-07 19:42:10,305 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:42:10" (1/1) ... [2024-11-07 19:42:10,305 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:42:10" (1/1) ... [2024-11-07 19:42:10,309 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:42:10" (1/1) ... [2024-11-07 19:42:10,314 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:42:10" (1/1) ... [2024-11-07 19:42:10,317 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:42:10" (1/1) ... [2024-11-07 19:42:10,321 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:42:10" (1/1) ... [2024-11-07 19:42:10,322 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-07 19:42:10,323 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-07 19:42:10,323 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-07 19:42:10,323 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-07 19:42:10,324 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:42:10" (1/1) ... [2024-11-07 19:42:10,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 19:42:10,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:42:10,356 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 19:42:10,366 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 19:42:10,382 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-07 19:42:10,382 INFO L130 BoogieDeclarations]: Found specification of procedure f1 [2024-11-07 19:42:10,382 INFO L138 BoogieDeclarations]: Found implementation of procedure f1 [2024-11-07 19:42:10,382 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2024-11-07 19:42:10,382 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2024-11-07 19:42:10,382 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-07 19:42:10,382 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-07 19:42:10,383 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-07 19:42:10,383 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 19:42:10,502 INFO L238 CfgBuilder]: Building ICFG [2024-11-07 19:42:10,504 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-07 19:42:10,616 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-07 19:42:10,616 INFO L287 CfgBuilder]: Performing block encoding [2024-11-07 19:42:10,675 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-07 19:42:10,675 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-07 19:42:10,675 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:42:10 BoogieIcfgContainer [2024-11-07 19:42:10,675 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-07 19:42:10,677 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-07 19:42:10,677 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-07 19:42:10,680 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-07 19:42:10,680 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 07:42:09" (1/3) ... [2024-11-07 19:42:10,681 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@419e248c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:42:10, skipping insertion in model container [2024-11-07 19:42:10,681 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:42:10" (2/3) ... [2024-11-07 19:42:10,681 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@419e248c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:42:10, skipping insertion in model container [2024-11-07 19:42:10,681 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:42:10" (3/3) ... [2024-11-07 19:42:10,682 INFO L112 eAbstractionObserver]: Analyzing ICFG unwind2-1.i [2024-11-07 19:42:10,712 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-07 19:42:10,712 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-11-07 19:42:10,712 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-07 19:42:10,759 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-07 19:42:10,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 38 transitions, 90 flow [2024-11-07 19:42:10,824 INFO L124 PetriNetUnfolderBase]: 6/36 cut-off events. [2024-11-07 19:42:10,827 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-07 19:42:10,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 36 events. 6/36 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 53 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 31. Up to 2 conditions per place. [2024-11-07 19:42:10,833 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 38 transitions, 90 flow [2024-11-07 19:42:10,835 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 36 places, 35 transitions, 82 flow [2024-11-07 19:42:10,843 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 19:42:10,857 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=None, 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;@7b151fdf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 19:42:10,861 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-11-07 19:42:10,870 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-07 19:42:10,870 INFO L124 PetriNetUnfolderBase]: 4/22 cut-off events. [2024-11-07 19:42:10,870 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-07 19:42:10,870 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:42:10,871 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:42:10,871 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting f1Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-07 19:42:10,877 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:42:10,877 INFO L85 PathProgramCache]: Analyzing trace with hash 338354967, now seen corresponding path program 1 times [2024-11-07 19:42:10,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:42:10,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746333365] [2024-11-07 19:42:10,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:42:10,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:42:10,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:42:11,100 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 19:42:11,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:42:11,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746333365] [2024-11-07 19:42:11,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746333365] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:42:11,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:42:11,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-07 19:42:11,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997117670] [2024-11-07 19:42:11,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:42:11,110 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-07 19:42:11,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:42:11,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-07 19:42:11,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-07 19:42:11,135 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-11-07 19:42:11,138 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 35 transitions, 82 flow. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 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 19:42:11,138 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:42:11,138 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-11-07 19:42:11,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:42:11,439 INFO L124 PetriNetUnfolderBase]: 287/602 cut-off events. [2024-11-07 19:42:11,439 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2024-11-07 19:42:11,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1128 conditions, 602 events. 287/602 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 3097 event pairs, 42 based on Foata normal form. 112/658 useless extension candidates. Maximal degree in co-relation 1048. Up to 215 conditions per place. [2024-11-07 19:42:11,448 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 58 selfloop transitions, 8 changer transitions 0/74 dead transitions. [2024-11-07 19:42:11,449 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 74 transitions, 307 flow [2024-11-07 19:42:11,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-07 19:42:11,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-07 19:42:11,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 152 transitions. [2024-11-07 19:42:11,461 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2024-11-07 19:42:11,463 INFO L175 Difference]: Start difference. First operand has 36 places, 35 transitions, 82 flow. Second operand 7 states and 152 transitions. [2024-11-07 19:42:11,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 74 transitions, 307 flow [2024-11-07 19:42:11,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 74 transitions, 289 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-07 19:42:11,471 INFO L231 Difference]: Finished difference. Result has 39 places, 34 transitions, 111 flow [2024-11-07 19:42:11,473 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=111, PETRI_PLACES=39, PETRI_TRANSITIONS=34} [2024-11-07 19:42:11,475 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 3 predicate places. [2024-11-07 19:42:11,476 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 34 transitions, 111 flow [2024-11-07 19:42:11,476 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 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 19:42:11,477 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:42:11,477 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:42:11,477 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-07 19:42:11,478 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting f1Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-07 19:42:11,478 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:42:11,478 INFO L85 PathProgramCache]: Analyzing trace with hash 1898083594, now seen corresponding path program 1 times [2024-11-07 19:42:11,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:42:11,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663853947] [2024-11-07 19:42:11,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:42:11,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:42:11,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:42:11,630 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:42:11,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:42:11,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663853947] [2024-11-07 19:42:11,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663853947] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 19:42:11,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [963630865] [2024-11-07 19:42:11,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:42:11,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:42:11,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:42:11,633 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 19:42:11,634 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 19:42:11,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:42:11,688 INFO L255 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-07 19:42:11,691 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:42:11,742 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:42:11,746 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 19:42:11,832 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:42:11,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [963630865] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 19:42:11,833 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 19:42:11,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 9 [2024-11-07 19:42:11,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808577079] [2024-11-07 19:42:11,833 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 19:42:11,834 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-07 19:42:11,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:42:11,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-07 19:42:11,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-11-07 19:42:11,882 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-11-07 19:42:11,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 34 transitions, 111 flow. Second operand has 10 states, 10 states have (on average 12.2) internal successors, (122), 10 states have internal predecessors, (122), 0 states have call successors, (0), 0 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 19:42:11,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:42:11,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-11-07 19:42:11,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:42:12,122 INFO L124 PetriNetUnfolderBase]: 513/1033 cut-off events. [2024-11-07 19:42:12,122 INFO L125 PetriNetUnfolderBase]: For 156/166 co-relation queries the response was YES. [2024-11-07 19:42:12,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2287 conditions, 1033 events. 513/1033 cut-off events. For 156/166 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 5859 event pairs, 81 based on Foata normal form. 10/884 useless extension candidates. Maximal degree in co-relation 853. Up to 332 conditions per place. [2024-11-07 19:42:12,128 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 73 selfloop transitions, 14 changer transitions 0/98 dead transitions. [2024-11-07 19:42:12,128 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 98 transitions, 438 flow [2024-11-07 19:42:12,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-07 19:42:12,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-07 19:42:12,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 184 transitions. [2024-11-07 19:42:12,130 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5380116959064327 [2024-11-07 19:42:12,130 INFO L175 Difference]: Start difference. First operand has 39 places, 34 transitions, 111 flow. Second operand 9 states and 184 transitions. [2024-11-07 19:42:12,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 98 transitions, 438 flow [2024-11-07 19:42:12,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 98 transitions, 427 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-11-07 19:42:12,133 INFO L231 Difference]: Finished difference. Result has 46 places, 41 transitions, 170 flow [2024-11-07 19:42:12,133 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=170, PETRI_PLACES=46, PETRI_TRANSITIONS=41} [2024-11-07 19:42:12,134 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 10 predicate places. [2024-11-07 19:42:12,134 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 41 transitions, 170 flow [2024-11-07 19:42:12,134 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.2) internal successors, (122), 10 states have internal predecessors, (122), 0 states have call successors, (0), 0 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 19:42:12,134 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:42:12,134 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:42:12,149 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 19:42:12,335 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:42:12,335 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting f1Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-07 19:42:12,337 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:42:12,337 INFO L85 PathProgramCache]: Analyzing trace with hash -1289936521, now seen corresponding path program 2 times [2024-11-07 19:42:12,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:42:12,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290455099] [2024-11-07 19:42:12,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:42:12,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:42:12,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:42:12,438 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:42:12,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:42:12,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290455099] [2024-11-07 19:42:12,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290455099] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 19:42:12,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1841001780] [2024-11-07 19:42:12,438 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 19:42:12,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:42:12,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:42:12,444 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 19:42:12,448 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 19:42:12,500 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 19:42:12,500 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 19:42:12,501 INFO L255 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-07 19:42:12,502 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:42:12,561 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:42:12,561 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-07 19:42:12,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1841001780] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:42:12,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-07 19:42:12,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 11 [2024-11-07 19:42:12,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244285732] [2024-11-07 19:42:12,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:42:12,562 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-07 19:42:12,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:42:12,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-07 19:42:12,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-11-07 19:42:12,570 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-11-07 19:42:12,571 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 41 transitions, 170 flow. Second operand has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 7 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 19:42:12,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:42:12,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-11-07 19:42:12,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:42:12,825 INFO L124 PetriNetUnfolderBase]: 403/865 cut-off events. [2024-11-07 19:42:12,825 INFO L125 PetriNetUnfolderBase]: For 558/568 co-relation queries the response was YES. [2024-11-07 19:42:12,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2213 conditions, 865 events. 403/865 cut-off events. For 558/568 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 4926 event pairs, 101 based on Foata normal form. 26/838 useless extension candidates. Maximal degree in co-relation 1319. Up to 362 conditions per place. [2024-11-07 19:42:12,829 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 77 selfloop transitions, 12 changer transitions 0/99 dead transitions. [2024-11-07 19:42:12,829 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 99 transitions, 505 flow [2024-11-07 19:42:12,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-07 19:42:12,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-07 19:42:12,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 185 transitions. [2024-11-07 19:42:12,831 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4868421052631579 [2024-11-07 19:42:12,831 INFO L175 Difference]: Start difference. First operand has 46 places, 41 transitions, 170 flow. Second operand 10 states and 185 transitions. [2024-11-07 19:42:12,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 99 transitions, 505 flow [2024-11-07 19:42:12,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 99 transitions, 485 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-11-07 19:42:12,835 INFO L231 Difference]: Finished difference. Result has 56 places, 45 transitions, 214 flow [2024-11-07 19:42:12,835 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=214, PETRI_PLACES=56, PETRI_TRANSITIONS=45} [2024-11-07 19:42:12,836 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 20 predicate places. [2024-11-07 19:42:12,836 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 45 transitions, 214 flow [2024-11-07 19:42:12,836 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 7 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 19:42:12,836 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:42:12,836 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:42:12,850 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-07 19:42:13,040 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:42:13,041 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting f2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-07 19:42:13,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:42:13,041 INFO L85 PathProgramCache]: Analyzing trace with hash 84955400, now seen corresponding path program 1 times [2024-11-07 19:42:13,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:42:13,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081326464] [2024-11-07 19:42:13,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:42:13,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:42:13,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:42:13,111 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 19:42:13,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:42:13,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081326464] [2024-11-07 19:42:13,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081326464] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:42:13,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:42:13,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-07 19:42:13,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337390985] [2024-11-07 19:42:13,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:42:13,112 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-07 19:42:13,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:42:13,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-07 19:42:13,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-07 19:42:13,116 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-11-07 19:42:13,117 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 45 transitions, 214 flow. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 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 19:42:13,117 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:42:13,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-11-07 19:42:13,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:42:13,289 INFO L124 PetriNetUnfolderBase]: 473/1010 cut-off events. [2024-11-07 19:42:13,290 INFO L125 PetriNetUnfolderBase]: For 986/1004 co-relation queries the response was YES. [2024-11-07 19:42:13,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2606 conditions, 1010 events. 473/1010 cut-off events. For 986/1004 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 5894 event pairs, 154 based on Foata normal form. 0/953 useless extension candidates. Maximal degree in co-relation 1783. Up to 489 conditions per place. [2024-11-07 19:42:13,296 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 64 selfloop transitions, 12 changer transitions 0/86 dead transitions. [2024-11-07 19:42:13,296 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 86 transitions, 575 flow [2024-11-07 19:42:13,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-07 19:42:13,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-07 19:42:13,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 132 transitions. [2024-11-07 19:42:13,297 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49624060150375937 [2024-11-07 19:42:13,297 INFO L175 Difference]: Start difference. First operand has 56 places, 45 transitions, 214 flow. Second operand 7 states and 132 transitions. [2024-11-07 19:42:13,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 86 transitions, 575 flow [2024-11-07 19:42:13,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 86 transitions, 558 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-11-07 19:42:13,302 INFO L231 Difference]: Finished difference. Result has 62 places, 49 transitions, 262 flow [2024-11-07 19:42:13,302 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=262, PETRI_PLACES=62, PETRI_TRANSITIONS=49} [2024-11-07 19:42:13,302 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 26 predicate places. [2024-11-07 19:42:13,302 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 49 transitions, 262 flow [2024-11-07 19:42:13,303 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 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 19:42:13,303 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:42:13,303 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:42:13,303 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-07 19:42:13,303 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting f2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-07 19:42:13,303 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:42:13,303 INFO L85 PathProgramCache]: Analyzing trace with hash -1662335674, now seen corresponding path program 1 times [2024-11-07 19:42:13,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:42:13,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764580964] [2024-11-07 19:42:13,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:42:13,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:42:13,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:42:13,363 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:42:13,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:42:13,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764580964] [2024-11-07 19:42:13,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764580964] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 19:42:13,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1627672540] [2024-11-07 19:42:13,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:42:13,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:42:13,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:42:13,371 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 19:42:13,372 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 19:42:13,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:42:13,415 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-07 19:42:13,416 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:42:13,465 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:42:13,465 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 19:42:13,521 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:42:13,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1627672540] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 19:42:13,522 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 19:42:13,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2024-11-07 19:42:13,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206992841] [2024-11-07 19:42:13,522 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 19:42:13,522 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-07 19:42:13,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:42:13,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-07 19:42:13,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-07 19:42:13,533 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-11-07 19:42:13,533 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 49 transitions, 262 flow. Second operand has 11 states, 11 states have (on average 11.818181818181818) internal successors, (130), 11 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:42:13,534 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:42:13,534 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-11-07 19:42:13,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:42:13,882 INFO L124 PetriNetUnfolderBase]: 543/1153 cut-off events. [2024-11-07 19:42:13,883 INFO L125 PetriNetUnfolderBase]: For 1395/1419 co-relation queries the response was YES. [2024-11-07 19:42:13,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3493 conditions, 1153 events. 543/1153 cut-off events. For 1395/1419 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 6878 event pairs, 136 based on Foata normal form. 0/1092 useless extension candidates. Maximal degree in co-relation 2372. Up to 489 conditions per place. [2024-11-07 19:42:13,888 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 84 selfloop transitions, 15 changer transitions 0/109 dead transitions. [2024-11-07 19:42:13,889 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 109 transitions, 798 flow [2024-11-07 19:42:13,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-07 19:42:13,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-07 19:42:13,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-11-07 19:42:13,890 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49415204678362573 [2024-11-07 19:42:13,890 INFO L175 Difference]: Start difference. First operand has 62 places, 49 transitions, 262 flow. Second operand 9 states and 169 transitions. [2024-11-07 19:42:13,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 109 transitions, 798 flow [2024-11-07 19:42:13,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 109 transitions, 782 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-11-07 19:42:13,896 INFO L231 Difference]: Finished difference. Result has 69 places, 52 transitions, 312 flow [2024-11-07 19:42:13,897 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=312, PETRI_PLACES=69, PETRI_TRANSITIONS=52} [2024-11-07 19:42:13,897 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 33 predicate places. [2024-11-07 19:42:13,897 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 52 transitions, 312 flow [2024-11-07 19:42:13,897 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.818181818181818) internal successors, (130), 11 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:42:13,897 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:42:13,897 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:42:13,910 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 19:42:14,098 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:42:14,098 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting f1Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-07 19:42:14,098 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:42:14,099 INFO L85 PathProgramCache]: Analyzing trace with hash -1032604834, now seen corresponding path program 1 times [2024-11-07 19:42:14,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:42:14,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943450970] [2024-11-07 19:42:14,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:42:14,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:42:14,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:42:14,164 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 19:42:14,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:42:14,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943450970] [2024-11-07 19:42:14,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943450970] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:42:14,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:42:14,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-07 19:42:14,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603637163] [2024-11-07 19:42:14,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:42:14,165 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-07 19:42:14,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:42:14,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-07 19:42:14,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-07 19:42:14,167 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-11-07 19:42:14,167 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 52 transitions, 312 flow. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 19:42:14,167 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:42:14,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-11-07 19:42:14,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:42:14,305 INFO L124 PetriNetUnfolderBase]: 473/997 cut-off events. [2024-11-07 19:42:14,305 INFO L125 PetriNetUnfolderBase]: For 1685/1707 co-relation queries the response was YES. [2024-11-07 19:42:14,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3390 conditions, 997 events. 473/997 cut-off events. For 1685/1707 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 5551 event pairs, 150 based on Foata normal form. 14/963 useless extension candidates. Maximal degree in co-relation 2138. Up to 522 conditions per place. [2024-11-07 19:42:14,310 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 54 selfloop transitions, 12 changer transitions 0/75 dead transitions. [2024-11-07 19:42:14,310 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 75 transitions, 576 flow [2024-11-07 19:42:14,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-07 19:42:14,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-07 19:42:14,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 111 transitions. [2024-11-07 19:42:14,311 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4868421052631579 [2024-11-07 19:42:14,311 INFO L175 Difference]: Start difference. First operand has 69 places, 52 transitions, 312 flow. Second operand 6 states and 111 transitions. [2024-11-07 19:42:14,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 75 transitions, 576 flow [2024-11-07 19:42:14,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 75 transitions, 527 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-11-07 19:42:14,316 INFO L231 Difference]: Finished difference. Result has 68 places, 50 transitions, 293 flow [2024-11-07 19:42:14,316 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=293, PETRI_PLACES=68, PETRI_TRANSITIONS=50} [2024-11-07 19:42:14,317 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 32 predicate places. [2024-11-07 19:42:14,317 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 50 transitions, 293 flow [2024-11-07 19:42:14,317 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 19:42:14,317 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:42:14,317 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:42:14,317 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-07 19:42:14,317 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting f2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-07 19:42:14,317 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:42:14,318 INFO L85 PathProgramCache]: Analyzing trace with hash 1116409153, now seen corresponding path program 1 times [2024-11-07 19:42:14,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:42:14,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608285145] [2024-11-07 19:42:14,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:42:14,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:42:14,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:42:14,373 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 19:42:14,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:42:14,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608285145] [2024-11-07 19:42:14,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608285145] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:42:14,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:42:14,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-07 19:42:14,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200514341] [2024-11-07 19:42:14,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:42:14,374 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-07 19:42:14,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:42:14,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-07 19:42:14,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-07 19:42:14,380 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-11-07 19:42:14,380 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 50 transitions, 293 flow. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 19:42:14,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:42:14,380 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-11-07 19:42:14,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:42:14,519 INFO L124 PetriNetUnfolderBase]: 487/1034 cut-off events. [2024-11-07 19:42:14,519 INFO L125 PetriNetUnfolderBase]: For 1802/1834 co-relation queries the response was YES. [2024-11-07 19:42:14,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3344 conditions, 1034 events. 487/1034 cut-off events. For 1802/1834 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 5818 event pairs, 161 based on Foata normal form. 0/988 useless extension candidates. Maximal degree in co-relation 2151. Up to 546 conditions per place. [2024-11-07 19:42:14,524 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 59 selfloop transitions, 12 changer transitions 0/80 dead transitions. [2024-11-07 19:42:14,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 80 transitions, 582 flow [2024-11-07 19:42:14,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-07 19:42:14,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-07 19:42:14,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 115 transitions. [2024-11-07 19:42:14,525 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5043859649122807 [2024-11-07 19:42:14,525 INFO L175 Difference]: Start difference. First operand has 68 places, 50 transitions, 293 flow. Second operand 6 states and 115 transitions. [2024-11-07 19:42:14,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 80 transitions, 582 flow [2024-11-07 19:42:14,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 80 transitions, 553 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-11-07 19:42:14,529 INFO L231 Difference]: Finished difference. Result has 70 places, 51 transitions, 310 flow [2024-11-07 19:42:14,529 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=310, PETRI_PLACES=70, PETRI_TRANSITIONS=51} [2024-11-07 19:42:14,529 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 34 predicate places. [2024-11-07 19:42:14,529 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 51 transitions, 310 flow [2024-11-07 19:42:14,530 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 19:42:14,530 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:42:14,530 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:42:14,530 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-07 19:42:14,530 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting f2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-07 19:42:14,530 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:42:14,530 INFO L85 PathProgramCache]: Analyzing trace with hash 6215880, now seen corresponding path program 2 times [2024-11-07 19:42:14,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:42:14,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546301927] [2024-11-07 19:42:14,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:42:14,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:42:14,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:42:14,660 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:42:14,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:42:14,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546301927] [2024-11-07 19:42:14,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546301927] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 19:42:14,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [674904054] [2024-11-07 19:42:14,660 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 19:42:14,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:42:14,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:42:14,662 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 19:42:14,664 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 19:42:14,710 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 19:42:14,710 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 19:42:14,711 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-07 19:42:14,712 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:42:14,917 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:42:14,920 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 19:42:15,185 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:42:15,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [674904054] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 19:42:15,185 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 19:42:15,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2024-11-07 19:42:15,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658626710] [2024-11-07 19:42:15,185 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 19:42:15,186 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-07 19:42:15,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:42:15,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-07 19:42:15,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2024-11-07 19:42:15,190 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-11-07 19:42:15,190 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 51 transitions, 310 flow. Second operand has 20 states, 20 states have (on average 10.35) internal successors, (207), 20 states have internal predecessors, (207), 0 states have call successors, (0), 0 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 19:42:15,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:42:15,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-11-07 19:42:15,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:42:15,642 INFO L124 PetriNetUnfolderBase]: 513/995 cut-off events. [2024-11-07 19:42:15,642 INFO L125 PetriNetUnfolderBase]: For 2152/2186 co-relation queries the response was YES. [2024-11-07 19:42:15,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3427 conditions, 995 events. 513/995 cut-off events. For 2152/2186 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 5229 event pairs, 63 based on Foata normal form. 0/973 useless extension candidates. Maximal degree in co-relation 2830. Up to 188 conditions per place. [2024-11-07 19:42:15,648 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 124 selfloop transitions, 23 changer transitions 0/155 dead transitions. [2024-11-07 19:42:15,648 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 155 transitions, 1204 flow [2024-11-07 19:42:15,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-07 19:42:15,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-07 19:42:15,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 247 transitions. [2024-11-07 19:42:15,649 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2024-11-07 19:42:15,650 INFO L175 Difference]: Start difference. First operand has 70 places, 51 transitions, 310 flow. Second operand 14 states and 247 transitions. [2024-11-07 19:42:15,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 155 transitions, 1204 flow [2024-11-07 19:42:15,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 155 transitions, 1155 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-11-07 19:42:15,656 INFO L231 Difference]: Finished difference. Result has 84 places, 58 transitions, 407 flow [2024-11-07 19:42:15,656 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=407, PETRI_PLACES=84, PETRI_TRANSITIONS=58} [2024-11-07 19:42:15,657 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 48 predicate places. [2024-11-07 19:42:15,657 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 58 transitions, 407 flow [2024-11-07 19:42:15,657 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 10.35) internal successors, (207), 20 states have internal predecessors, (207), 0 states have call successors, (0), 0 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 19:42:15,657 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:42:15,657 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:42:15,673 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 19:42:15,858 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,SelfDestructingSolverStorable7 [2024-11-07 19:42:15,858 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting f2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-07 19:42:15,859 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:42:15,859 INFO L85 PathProgramCache]: Analyzing trace with hash -1678074481, now seen corresponding path program 1 times [2024-11-07 19:42:15,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:42:15,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192719447] [2024-11-07 19:42:15,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:42:15,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:42:15,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-07 19:42:15,865 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-07 19:42:15,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-07 19:42:15,877 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-07 19:42:15,878 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-07 19:42:15,878 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (6 of 7 remaining) [2024-11-07 19:42:15,879 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (5 of 7 remaining) [2024-11-07 19:42:15,879 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2024-11-07 19:42:15,879 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 7 remaining) [2024-11-07 19:42:15,879 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err0ASSERT_VIOLATIONMEMORY_LEAK (2 of 7 remaining) [2024-11-07 19:42:15,880 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 7 remaining) [2024-11-07 19:42:15,880 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 7 remaining) [2024-11-07 19:42:15,880 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-07 19:42:15,880 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1] [2024-11-07 19:42:15,904 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-07 19:42:15,904 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-07 19:42:15,912 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 07:42:15 BasicIcfg [2024-11-07 19:42:15,912 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-07 19:42:15,912 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-07 19:42:15,912 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-07 19:42:15,912 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-07 19:42:15,913 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:42:10" (3/4) ... [2024-11-07 19:42:15,914 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-11-07 19:42:15,914 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-07 19:42:15,915 INFO L158 Benchmark]: Toolchain (without parser) took 5954.81ms. Allocated memory was 109.1MB in the beginning and 167.8MB in the end (delta: 58.7MB). Free memory was 84.2MB in the beginning and 48.4MB in the end (delta: 35.8MB). Peak memory consumption was 91.5MB. Max. memory is 16.1GB. [2024-11-07 19:42:15,915 INFO L158 Benchmark]: CDTParser took 0.90ms. Allocated memory is still 83.9MB. Free memory is still 48.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-07 19:42:15,915 INFO L158 Benchmark]: CACSL2BoogieTranslator took 286.43ms. Allocated memory is still 109.1MB. Free memory was 84.1MB in the beginning and 64.4MB in the end (delta: 19.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-07 19:42:15,919 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.45ms. Allocated memory is still 109.1MB. Free memory was 64.4MB in the beginning and 62.6MB in the end (delta: 1.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-07 19:42:15,919 INFO L158 Benchmark]: Boogie Preprocessor took 40.52ms. Allocated memory is still 109.1MB. Free memory was 62.6MB in the beginning and 60.9MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-07 19:42:15,919 INFO L158 Benchmark]: RCFGBuilder took 352.62ms. Allocated memory is still 109.1MB. Free memory was 60.9MB in the beginning and 41.2MB in the end (delta: 19.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-07 19:42:15,920 INFO L158 Benchmark]: TraceAbstraction took 5234.72ms. Allocated memory was 109.1MB in the beginning and 167.8MB in the end (delta: 58.7MB). Free memory was 40.6MB in the beginning and 48.4MB in the end (delta: -7.9MB). Peak memory consumption was 57.9MB. Max. memory is 16.1GB. [2024-11-07 19:42:15,920 INFO L158 Benchmark]: Witness Printer took 2.04ms. Allocated memory is still 167.8MB. Free memory is still 48.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-07 19:42:15,920 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.90ms. Allocated memory is still 83.9MB. Free memory is still 48.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 286.43ms. Allocated memory is still 109.1MB. Free memory was 84.1MB in the beginning and 64.4MB in the end (delta: 19.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.45ms. Allocated memory is still 109.1MB. Free memory was 64.4MB in the beginning and 62.6MB in the end (delta: 1.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 40.52ms. Allocated memory is still 109.1MB. Free memory was 62.6MB in the beginning and 60.9MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 352.62ms. Allocated memory is still 109.1MB. Free memory was 60.9MB in the beginning and 41.2MB in the end (delta: 19.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 5234.72ms. Allocated memory was 109.1MB in the beginning and 167.8MB in the end (delta: 58.7MB). Free memory was 40.6MB in the beginning and 48.4MB in the end (delta: -7.9MB). Peak memory consumption was 57.9MB. Max. memory is 16.1GB. * Witness Printer took 2.04ms. Allocated memory is still 167.8MB. Free memory is still 48.4MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 752]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 752. Possible FailurePath: [L754] 0 int _N; [L755] 0 atomic_int limit; [L775] 0 _N = 1 [L776] CALL 0 assume_abort_if_not(0 <= _N && _N <= 0x7fffffff - 1) [L750] COND FALSE 0 !(!cond) [L776] RET 0 assume_abort_if_not(0 <= _N && _N <= 0x7fffffff - 1) [L777] 0 pthread_t t1, t2; [L778] FCALL, FORK 0 pthread_create(&t1, 0, f1, 0) VAL [_N=1, limit=0, t1=-2] [L757] 1 int i, bound; [L758] 1 int lim = _N; VAL [\old(arg)={0:0}, _N=1, arg={0:0}, lim=1, limit=0] [L779] FCALL, FORK 0 pthread_create(&t2, 0, f2, 0) VAL [_N=1, limit=0, t1=-2, t2=-1] [L766] 2 int i, bound; [L767] 2 int lim = _N + 1; VAL [\old(arg)={0:0}, _N=1, arg={0:0}, lim=2, limit=0] [L768] 2 limit = lim VAL [\old(arg)={0:0}, _N=1, arg={0:0}, lim=2, limit=2] [L759] 1 limit = lim VAL [\old(arg)={0:0}, _N=1, arg={0:0}, lim=1, limit=1] [L769] 2 bound = limit [L770] 2 i = 0 VAL [\old(arg)={0:0}, _N=1, arg={0:0}, bound=1, i=0, lim=2, limit=1] [L770] COND TRUE 2 i < bound [L770] 2 i++ VAL [\old(arg)={0:0}, _N=1, arg={0:0}, bound=1, i=1, lim=2, limit=1] [L770] COND FALSE 2 !(i < bound) [L771] CALL 2 __VERIFIER_assert(i == lim) [L753] COND TRUE 2 !expression [L753] CALL 2 reach_error() [L752] COND FALSE 2 !(0) VAL [_N=1, limit=1] [L752] 2 __assert_fail ("0", "generated/unwind2.h", 11, __extension__ __PRETTY_FUNCTION__) VAL [_N=1, limit=1] - UnprovableResult [Line: 774]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 779]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 778]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 752]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 57 locations, 7 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 5.1s, OverallIterations: 9, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1024 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1010 mSDsluCounter, 175 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 137 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1702 IncrementalHoareTripleChecker+Invalid, 1711 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 38 mSDtfsCounter, 1702 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 165 GetRequests, 52 SyntacticMatches, 8 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=407occurred in iteration=8, InterpolantAutomatonStates: 68, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 152 NumberOfCodeBlocks, 152 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 158 ConstructedInterpolants, 0 QuantifiedInterpolants, 560 SizeOfPredicates, 18 NumberOfNonLiveVariables, 282 ConjunctsInSsa, 36 ConjunctsInUnsatCore, 15 InterpolantComputations, 5 PerfectInterpolantSequences, 5/21 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-11-07 19:42:15,937 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/pthread-theta/unwind2-1.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 84506b1a5f2f1a1be74252915eb3882c15865a3a673842f14f5796dbb89eb736 --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-07 19:42:17,809 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-07 19:42:17,888 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-11-07 19:42:17,896 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-07 19:42:17,897 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-07 19:42:17,923 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-07 19:42:17,926 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-07 19:42:17,926 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-07 19:42:17,926 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-07 19:42:17,926 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-07 19:42:17,926 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-07 19:42:17,926 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-07 19:42:17,927 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-07 19:42:17,927 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-07 19:42:17,927 INFO L153 SettingsManager]: * Use SBE=true [2024-11-07 19:42:17,927 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-07 19:42:17,927 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-07 19:42:17,928 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-07 19:42:17,928 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-07 19:42:17,928 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-07 19:42:17,928 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-07 19:42:17,928 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-07 19:42:17,928 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-07 19:42:17,928 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-07 19:42:17,929 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-07 19:42:17,929 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-07 19:42:17,929 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-07 19:42:17,929 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-07 19:42:17,929 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-07 19:42:17,929 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-07 19:42:17,929 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-07 19:42:17,929 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-07 19:42:17,930 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-07 19:42:17,930 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-07 19:42:17,930 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-07 19:42:17,930 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 19:42:17,930 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-07 19:42:17,930 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-07 19:42:17,930 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-07 19:42:17,930 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-07 19:42:17,930 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-07 19:42:17,931 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-07 19:42:17,931 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-07 19:42:17,931 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-07 19:42:17,931 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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) 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 -> 84506b1a5f2f1a1be74252915eb3882c15865a3a673842f14f5796dbb89eb736 [2024-11-07 19:42:18,145 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-07 19:42:18,158 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-07 19:42:18,163 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-07 19:42:18,164 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-07 19:42:18,164 INFO L274 PluginConnector]: CDTParser initialized [2024-11-07 19:42:18,165 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-theta/unwind2-1.i [2024-11-07 19:42:19,512 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-07 19:42:19,745 INFO L384 CDTParser]: Found 1 translation units. [2024-11-07 19:42:19,745 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-theta/unwind2-1.i [2024-11-07 19:42:19,760 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/c36ad0d9d/659bfb5e40354ef589c8754f4c36be8c/FLAGa81cbe749 [2024-11-07 19:42:19,775 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/c36ad0d9d/659bfb5e40354ef589c8754f4c36be8c [2024-11-07 19:42:19,776 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-07 19:42:19,779 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-07 19:42:19,780 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-07 19:42:19,780 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-07 19:42:19,783 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-07 19:42:19,783 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:42:19" (1/1) ... [2024-11-07 19:42:19,785 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33da03fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:42:19, skipping insertion in model container [2024-11-07 19:42:19,785 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:42:19" (1/1) ... [2024-11-07 19:42:19,809 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-07 19:42:20,027 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 19:42:20,037 INFO L200 MainTranslator]: Completed pre-run [2024-11-07 19:42:20,074 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 19:42:20,127 INFO L204 MainTranslator]: Completed translation [2024-11-07 19:42:20,127 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:42:20 WrapperNode [2024-11-07 19:42:20,128 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-07 19:42:20,128 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-07 19:42:20,129 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-07 19:42:20,129 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-07 19:42:20,135 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:42:20" (1/1) ... [2024-11-07 19:42:20,149 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:42:20" (1/1) ... [2024-11-07 19:42:20,168 INFO L138 Inliner]: procedures = 170, calls = 12, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 86 [2024-11-07 19:42:20,168 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-07 19:42:20,170 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-07 19:42:20,170 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-07 19:42:20,170 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-07 19:42:20,177 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:42:20" (1/1) ... [2024-11-07 19:42:20,177 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:42:20" (1/1) ... [2024-11-07 19:42:20,183 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:42:20" (1/1) ... [2024-11-07 19:42:20,197 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-07 19:42:20,198 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:42:20" (1/1) ... [2024-11-07 19:42:20,198 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:42:20" (1/1) ... [2024-11-07 19:42:20,203 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:42:20" (1/1) ... [2024-11-07 19:42:20,208 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:42:20" (1/1) ... [2024-11-07 19:42:20,209 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:42:20" (1/1) ... [2024-11-07 19:42:20,212 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:42:20" (1/1) ... [2024-11-07 19:42:20,214 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-07 19:42:20,215 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-07 19:42:20,215 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-07 19:42:20,215 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-07 19:42:20,216 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:42:20" (1/1) ... [2024-11-07 19:42:20,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 19:42:20,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:42:20,253 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 19:42:20,255 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 19:42:20,276 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-07 19:42:20,276 INFO L130 BoogieDeclarations]: Found specification of procedure f1 [2024-11-07 19:42:20,276 INFO L138 BoogieDeclarations]: Found implementation of procedure f1 [2024-11-07 19:42:20,276 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2024-11-07 19:42:20,276 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2024-11-07 19:42:20,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-07 19:42:20,277 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-07 19:42:20,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-07 19:42:20,277 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 19:42:20,377 INFO L238 CfgBuilder]: Building ICFG [2024-11-07 19:42:20,379 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-07 19:42:20,519 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-07 19:42:20,519 INFO L287 CfgBuilder]: Performing block encoding [2024-11-07 19:42:20,654 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-07 19:42:20,654 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-07 19:42:20,655 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:42:20 BoogieIcfgContainer [2024-11-07 19:42:20,655 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-07 19:42:20,656 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-07 19:42:20,656 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-07 19:42:20,660 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-07 19:42:20,660 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 07:42:19" (1/3) ... [2024-11-07 19:42:20,661 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c664352 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:42:20, skipping insertion in model container [2024-11-07 19:42:20,661 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:42:20" (2/3) ... [2024-11-07 19:42:20,661 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c664352 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:42:20, skipping insertion in model container [2024-11-07 19:42:20,661 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:42:20" (3/3) ... [2024-11-07 19:42:20,662 INFO L112 eAbstractionObserver]: Analyzing ICFG unwind2-1.i [2024-11-07 19:42:20,679 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-07 19:42:20,680 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-11-07 19:42:20,680 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-07 19:42:20,722 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-07 19:42:20,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 38 transitions, 90 flow [2024-11-07 19:42:20,777 INFO L124 PetriNetUnfolderBase]: 6/36 cut-off events. [2024-11-07 19:42:20,778 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-07 19:42:20,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 36 events. 6/36 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 53 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 31. Up to 2 conditions per place. [2024-11-07 19:42:20,780 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 38 transitions, 90 flow [2024-11-07 19:42:20,783 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 36 places, 35 transitions, 82 flow [2024-11-07 19:42:20,790 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 19:42:20,798 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=None, 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;@30b10800, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 19:42:20,798 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-11-07 19:42:20,803 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-07 19:42:20,803 INFO L124 PetriNetUnfolderBase]: 4/22 cut-off events. [2024-11-07 19:42:20,803 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-07 19:42:20,803 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:42:20,804 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:42:20,804 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting f1Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-07 19:42:20,807 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:42:20,807 INFO L85 PathProgramCache]: Analyzing trace with hash 2043240985, now seen corresponding path program 1 times [2024-11-07 19:42:20,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-07 19:42:20,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1385206142] [2024-11-07 19:42:20,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:42:20,818 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-07 19:42:20,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-07 19:42:20,824 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-07 19:42:20,825 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-11-07 19:42:20,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:42:20,882 INFO L255 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-07 19:42:20,884 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:42:20,937 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 19:42:20,937 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-07 19:42:20,938 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-07 19:42:20,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1385206142] [2024-11-07 19:42:20,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1385206142] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:42:20,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:42:20,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-07 19:42:20,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270168566] [2024-11-07 19:42:20,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:42:20,943 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-07 19:42:20,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-07 19:42:20,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-07 19:42:20,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-07 19:42:20,969 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-11-07 19:42:20,971 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 35 transitions, 82 flow. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 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 19:42:20,971 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:42:20,971 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-11-07 19:42:20,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:42:21,208 INFO L124 PetriNetUnfolderBase]: 287/602 cut-off events. [2024-11-07 19:42:21,209 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2024-11-07 19:42:21,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1128 conditions, 602 events. 287/602 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 3114 event pairs, 42 based on Foata normal form. 112/658 useless extension candidates. Maximal degree in co-relation 1048. Up to 215 conditions per place. [2024-11-07 19:42:21,213 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 58 selfloop transitions, 8 changer transitions 0/74 dead transitions. [2024-11-07 19:42:21,213 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 74 transitions, 307 flow [2024-11-07 19:42:21,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-07 19:42:21,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-07 19:42:21,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 152 transitions. [2024-11-07 19:42:21,221 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2024-11-07 19:42:21,222 INFO L175 Difference]: Start difference. First operand has 36 places, 35 transitions, 82 flow. Second operand 7 states and 152 transitions. [2024-11-07 19:42:21,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 74 transitions, 307 flow [2024-11-07 19:42:21,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 74 transitions, 289 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-07 19:42:21,226 INFO L231 Difference]: Finished difference. Result has 39 places, 34 transitions, 111 flow [2024-11-07 19:42:21,228 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=111, PETRI_PLACES=39, PETRI_TRANSITIONS=34} [2024-11-07 19:42:21,230 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 3 predicate places. [2024-11-07 19:42:21,230 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 34 transitions, 111 flow [2024-11-07 19:42:21,230 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 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 19:42:21,230 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:42:21,230 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:42:21,233 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2024-11-07 19:42:21,433 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-07 19:42:21,433 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting f1Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-07 19:42:21,433 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:42:21,434 INFO L85 PathProgramCache]: Analyzing trace with hash -1085024694, now seen corresponding path program 1 times [2024-11-07 19:42:21,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-07 19:42:21,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [287904313] [2024-11-07 19:42:21,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:42:21,434 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-07 19:42:21,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-07 19:42:21,436 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-07 19:42:21,440 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-11-07 19:42:21,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:42:21,515 INFO L255 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-07 19:42:21,516 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:42:21,579 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:42:21,579 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 19:42:21,628 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:42:21,629 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-07 19:42:21,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [287904313] [2024-11-07 19:42:21,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [287904313] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 19:42:21,629 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-07 19:42:21,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2024-11-07 19:42:21,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463924791] [2024-11-07 19:42:21,629 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-07 19:42:21,630 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-07 19:42:21,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-07 19:42:21,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-07 19:42:21,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-11-07 19:42:21,650 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-11-07 19:42:21,651 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 34 transitions, 111 flow. Second operand has 10 states, 10 states have (on average 12.1) internal successors, (121), 10 states have internal predecessors, (121), 0 states have call successors, (0), 0 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 19:42:21,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:42:21,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-11-07 19:42:21,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:42:22,000 INFO L124 PetriNetUnfolderBase]: 513/1019 cut-off events. [2024-11-07 19:42:22,001 INFO L125 PetriNetUnfolderBase]: For 115/117 co-relation queries the response was YES. [2024-11-07 19:42:22,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2281 conditions, 1019 events. 513/1019 cut-off events. For 115/117 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 5773 event pairs, 45 based on Foata normal form. 2/864 useless extension candidates. Maximal degree in co-relation 850. Up to 332 conditions per place. [2024-11-07 19:42:22,006 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 73 selfloop transitions, 14 changer transitions 0/98 dead transitions. [2024-11-07 19:42:22,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 98 transitions, 438 flow [2024-11-07 19:42:22,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-07 19:42:22,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-07 19:42:22,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 184 transitions. [2024-11-07 19:42:22,008 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5380116959064327 [2024-11-07 19:42:22,008 INFO L175 Difference]: Start difference. First operand has 39 places, 34 transitions, 111 flow. Second operand 9 states and 184 transitions. [2024-11-07 19:42:22,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 98 transitions, 438 flow [2024-11-07 19:42:22,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 98 transitions, 427 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-11-07 19:42:22,013 INFO L231 Difference]: Finished difference. Result has 46 places, 41 transitions, 170 flow [2024-11-07 19:42:22,013 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=170, PETRI_PLACES=46, PETRI_TRANSITIONS=41} [2024-11-07 19:42:22,014 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 10 predicate places. [2024-11-07 19:42:22,014 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 41 transitions, 170 flow [2024-11-07 19:42:22,014 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.1) internal successors, (121), 10 states have internal predecessors, (121), 0 states have call successors, (0), 0 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 19:42:22,014 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:42:22,014 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:42:22,021 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2024-11-07 19:42:22,218 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-07 19:42:22,219 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting f1Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-07 19:42:22,219 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:42:22,219 INFO L85 PathProgramCache]: Analyzing trace with hash 722987065, now seen corresponding path program 2 times [2024-11-07 19:42:22,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-07 19:42:22,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [724137713] [2024-11-07 19:42:22,223 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 19:42:22,223 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-07 19:42:22,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-07 19:42:22,225 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-07 19:42:22,227 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2024-11-07 19:42:22,271 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 19:42:22,272 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 19:42:22,274 INFO L255 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-07 19:42:22,275 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:42:22,331 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:42:22,332 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 19:42:22,431 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:42:22,432 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-07 19:42:22,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [724137713] [2024-11-07 19:42:22,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [724137713] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 19:42:22,432 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-07 19:42:22,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2024-11-07 19:42:22,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841238988] [2024-11-07 19:42:22,432 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-07 19:42:22,432 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-07 19:42:22,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-07 19:42:22,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-07 19:42:22,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-11-07 19:42:22,436 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-11-07 19:42:22,436 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 41 transitions, 170 flow. Second operand has 12 states, 12 states have (on average 11.333333333333334) internal successors, (136), 12 states have internal predecessors, (136), 0 states have call successors, (0), 0 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 19:42:22,436 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:42:22,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-11-07 19:42:22,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:42:22,940 INFO L124 PetriNetUnfolderBase]: 403/859 cut-off events. [2024-11-07 19:42:22,944 INFO L125 PetriNetUnfolderBase]: For 545/555 co-relation queries the response was YES. [2024-11-07 19:42:22,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2209 conditions, 859 events. 403/859 cut-off events. For 545/555 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 4866 event pairs, 25 based on Foata normal form. 26/834 useless extension candidates. Maximal degree in co-relation 1315. Up to 233 conditions per place. [2024-11-07 19:42:22,952 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 84 selfloop transitions, 15 changer transitions 0/109 dead transitions. [2024-11-07 19:42:22,953 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 109 transitions, 546 flow [2024-11-07 19:42:22,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-07 19:42:22,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-07 19:42:22,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 216 transitions. [2024-11-07 19:42:22,954 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47368421052631576 [2024-11-07 19:42:22,954 INFO L175 Difference]: Start difference. First operand has 46 places, 41 transitions, 170 flow. Second operand 12 states and 216 transitions. [2024-11-07 19:42:22,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 109 transitions, 546 flow [2024-11-07 19:42:22,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 109 transitions, 526 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-11-07 19:42:22,959 INFO L231 Difference]: Finished difference. Result has 58 places, 46 transitions, 228 flow [2024-11-07 19:42:22,959 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=228, PETRI_PLACES=58, PETRI_TRANSITIONS=46} [2024-11-07 19:42:22,959 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 22 predicate places. [2024-11-07 19:42:22,960 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 46 transitions, 228 flow [2024-11-07 19:42:22,960 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.333333333333334) internal successors, (136), 12 states have internal predecessors, (136), 0 states have call successors, (0), 0 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 19:42:22,960 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:42:22,960 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:42:22,963 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2024-11-07 19:42:23,160 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-07 19:42:23,161 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting f2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-07 19:42:23,161 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:42:23,161 INFO L85 PathProgramCache]: Analyzing trace with hash 2097878986, now seen corresponding path program 1 times [2024-11-07 19:42:23,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-07 19:42:23,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1381642119] [2024-11-07 19:42:23,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:42:23,161 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-07 19:42:23,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-07 19:42:23,166 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-07 19:42:23,166 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2024-11-07 19:42:23,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:42:23,209 INFO L255 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-07 19:42:23,209 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:42:23,237 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 19:42:23,237 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-07 19:42:23,237 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-07 19:42:23,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1381642119] [2024-11-07 19:42:23,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1381642119] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:42:23,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:42:23,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-07 19:42:23,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043580350] [2024-11-07 19:42:23,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:42:23,238 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-07 19:42:23,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-07 19:42:23,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-07 19:42:23,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-07 19:42:23,241 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-11-07 19:42:23,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 46 transitions, 228 flow. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 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 19:42:23,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:42:23,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-11-07 19:42:23,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:42:23,418 INFO L124 PetriNetUnfolderBase]: 473/1018 cut-off events. [2024-11-07 19:42:23,418 INFO L125 PetriNetUnfolderBase]: For 1134/1152 co-relation queries the response was YES. [2024-11-07 19:42:23,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2716 conditions, 1018 events. 473/1018 cut-off events. For 1134/1152 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 6020 event pairs, 136 based on Foata normal form. 0/961 useless extension candidates. Maximal degree in co-relation 1851. Up to 489 conditions per place. [2024-11-07 19:42:23,422 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 66 selfloop transitions, 12 changer transitions 0/88 dead transitions. [2024-11-07 19:42:23,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 88 transitions, 613 flow [2024-11-07 19:42:23,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-07 19:42:23,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-07 19:42:23,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 132 transitions. [2024-11-07 19:42:23,424 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49624060150375937 [2024-11-07 19:42:23,424 INFO L175 Difference]: Start difference. First operand has 58 places, 46 transitions, 228 flow. Second operand 7 states and 132 transitions. [2024-11-07 19:42:23,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 88 transitions, 613 flow [2024-11-07 19:42:23,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 88 transitions, 582 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-11-07 19:42:23,431 INFO L231 Difference]: Finished difference. Result has 63 places, 50 transitions, 267 flow [2024-11-07 19:42:23,431 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=267, PETRI_PLACES=63, PETRI_TRANSITIONS=50} [2024-11-07 19:42:23,432 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 27 predicate places. [2024-11-07 19:42:23,432 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 50 transitions, 267 flow [2024-11-07 19:42:23,432 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 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 19:42:23,432 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:42:23,436 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:42:23,442 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2024-11-07 19:42:23,637 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-07 19:42:23,637 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting f2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-07 19:42:23,637 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:42:23,638 INFO L85 PathProgramCache]: Analyzing trace with hash 608753350, now seen corresponding path program 1 times [2024-11-07 19:42:23,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-07 19:42:23,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1773454178] [2024-11-07 19:42:23,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:42:23,638 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-07 19:42:23,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-07 19:42:23,640 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-07 19:42:23,642 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2024-11-07 19:42:23,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:42:23,681 INFO L255 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-07 19:42:23,682 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:42:23,717 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:42:23,718 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 19:42:23,776 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:42:23,777 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-07 19:42:23,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1773454178] [2024-11-07 19:42:23,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1773454178] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 19:42:23,777 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-07 19:42:23,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2024-11-07 19:42:23,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142265418] [2024-11-07 19:42:23,777 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-07 19:42:23,778 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-07 19:42:23,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-07 19:42:23,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-07 19:42:23,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-11-07 19:42:23,788 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-11-07 19:42:23,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 50 transitions, 267 flow. Second operand has 12 states, 12 states have (on average 11.583333333333334) internal successors, (139), 12 states have internal predecessors, (139), 0 states have call successors, (0), 0 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 19:42:23,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:42:23,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-11-07 19:42:23,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:42:24,072 INFO L124 PetriNetUnfolderBase]: 543/1151 cut-off events. [2024-11-07 19:42:24,072 INFO L125 PetriNetUnfolderBase]: For 1508/1532 co-relation queries the response was YES. [2024-11-07 19:42:24,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3567 conditions, 1151 events. 543/1151 cut-off events. For 1508/1532 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 6885 event pairs, 154 based on Foata normal form. 0/1090 useless extension candidates. Maximal degree in co-relation 2406. Up to 489 conditions per place. [2024-11-07 19:42:24,076 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 87 selfloop transitions, 15 changer transitions 0/112 dead transitions. [2024-11-07 19:42:24,077 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 112 transitions, 837 flow [2024-11-07 19:42:24,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-07 19:42:24,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-07 19:42:24,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-11-07 19:42:24,078 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49415204678362573 [2024-11-07 19:42:24,078 INFO L175 Difference]: Start difference. First operand has 63 places, 50 transitions, 267 flow. Second operand 9 states and 169 transitions. [2024-11-07 19:42:24,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 112 transitions, 837 flow [2024-11-07 19:42:24,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 112 transitions, 821 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-11-07 19:42:24,083 INFO L231 Difference]: Finished difference. Result has 70 places, 53 transitions, 316 flow [2024-11-07 19:42:24,083 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=316, PETRI_PLACES=70, PETRI_TRANSITIONS=53} [2024-11-07 19:42:24,083 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 34 predicate places. [2024-11-07 19:42:24,084 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 53 transitions, 316 flow [2024-11-07 19:42:24,084 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.583333333333334) internal successors, (139), 12 states have internal predecessors, (139), 0 states have call successors, (0), 0 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 19:42:24,084 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:42:24,084 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:42:24,090 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2024-11-07 19:42:24,286 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-07 19:42:24,287 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting f1Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-07 19:42:24,287 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:42:24,288 INFO L85 PathProgramCache]: Analyzing trace with hash 139544498, now seen corresponding path program 1 times [2024-11-07 19:42:24,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-07 19:42:24,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1491367483] [2024-11-07 19:42:24,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:42:24,288 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-07 19:42:24,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-07 19:42:24,290 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-07 19:42:24,292 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2024-11-07 19:42:24,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:42:24,325 INFO L255 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-07 19:42:24,325 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:42:24,352 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 19:42:24,353 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-07 19:42:24,353 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-07 19:42:24,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1491367483] [2024-11-07 19:42:24,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1491367483] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:42:24,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:42:24,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-07 19:42:24,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599307774] [2024-11-07 19:42:24,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:42:24,353 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-07 19:42:24,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-07 19:42:24,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-07 19:42:24,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-07 19:42:24,358 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-11-07 19:42:24,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 53 transitions, 316 flow. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 19:42:24,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:42:24,358 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-11-07 19:42:24,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:42:24,507 INFO L124 PetriNetUnfolderBase]: 473/997 cut-off events. [2024-11-07 19:42:24,507 INFO L125 PetriNetUnfolderBase]: For 1781/1803 co-relation queries the response was YES. [2024-11-07 19:42:24,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3438 conditions, 997 events. 473/997 cut-off events. For 1781/1803 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 5565 event pairs, 150 based on Foata normal form. 14/963 useless extension candidates. Maximal degree in co-relation 2144. Up to 522 conditions per place. [2024-11-07 19:42:24,512 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 55 selfloop transitions, 12 changer transitions 0/76 dead transitions. [2024-11-07 19:42:24,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 76 transitions, 583 flow [2024-11-07 19:42:24,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-07 19:42:24,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-07 19:42:24,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 111 transitions. [2024-11-07 19:42:24,513 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4868421052631579 [2024-11-07 19:42:24,513 INFO L175 Difference]: Start difference. First operand has 70 places, 53 transitions, 316 flow. Second operand 6 states and 111 transitions. [2024-11-07 19:42:24,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 76 transitions, 583 flow [2024-11-07 19:42:24,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 76 transitions, 534 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-11-07 19:42:24,517 INFO L231 Difference]: Finished difference. Result has 69 places, 51 transitions, 297 flow [2024-11-07 19:42:24,518 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=297, PETRI_PLACES=69, PETRI_TRANSITIONS=51} [2024-11-07 19:42:24,518 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 33 predicate places. [2024-11-07 19:42:24,518 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 51 transitions, 297 flow [2024-11-07 19:42:24,518 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 19:42:24,518 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:42:24,519 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:42:24,521 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2024-11-07 19:42:24,719 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-07 19:42:24,720 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting f2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-07 19:42:24,720 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:42:24,720 INFO L85 PathProgramCache]: Analyzing trace with hash 106162721, now seen corresponding path program 1 times [2024-11-07 19:42:24,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-07 19:42:24,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1754397373] [2024-11-07 19:42:24,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:42:24,720 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-07 19:42:24,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-07 19:42:24,722 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-07 19:42:24,724 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2024-11-07 19:42:24,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:42:24,757 INFO L255 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-07 19:42:24,758 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:42:24,785 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 19:42:24,785 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-07 19:42:24,785 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-07 19:42:24,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1754397373] [2024-11-07 19:42:24,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1754397373] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:42:24,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:42:24,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-07 19:42:24,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612466439] [2024-11-07 19:42:24,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:42:24,786 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-07 19:42:24,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-07 19:42:24,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-07 19:42:24,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-07 19:42:24,792 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-11-07 19:42:24,792 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 51 transitions, 297 flow. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 19:42:24,792 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:42:24,792 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-11-07 19:42:24,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:42:24,949 INFO L124 PetriNetUnfolderBase]: 487/1036 cut-off events. [2024-11-07 19:42:24,950 INFO L125 PetriNetUnfolderBase]: For 1854/1884 co-relation queries the response was YES. [2024-11-07 19:42:24,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3396 conditions, 1036 events. 487/1036 cut-off events. For 1854/1884 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 5875 event pairs, 152 based on Foata normal form. 0/990 useless extension candidates. Maximal degree in co-relation 2161. Up to 546 conditions per place. [2024-11-07 19:42:24,954 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 60 selfloop transitions, 12 changer transitions 0/81 dead transitions. [2024-11-07 19:42:24,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 81 transitions, 590 flow [2024-11-07 19:42:24,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-07 19:42:24,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-07 19:42:24,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 115 transitions. [2024-11-07 19:42:24,955 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5043859649122807 [2024-11-07 19:42:24,955 INFO L175 Difference]: Start difference. First operand has 69 places, 51 transitions, 297 flow. Second operand 6 states and 115 transitions. [2024-11-07 19:42:24,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 81 transitions, 590 flow [2024-11-07 19:42:24,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 81 transitions, 551 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-11-07 19:42:24,959 INFO L231 Difference]: Finished difference. Result has 70 places, 52 transitions, 306 flow [2024-11-07 19:42:24,959 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=306, PETRI_PLACES=70, PETRI_TRANSITIONS=52} [2024-11-07 19:42:24,960 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 34 predicate places. [2024-11-07 19:42:24,960 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 52 transitions, 306 flow [2024-11-07 19:42:24,960 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 19:42:24,960 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:42:24,960 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:42:24,964 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2024-11-07 19:42:25,163 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-07 19:42:25,163 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting f2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-07 19:42:25,164 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:42:25,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1690498890, now seen corresponding path program 2 times [2024-11-07 19:42:25,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-07 19:42:25,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [107808703] [2024-11-07 19:42:25,164 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 19:42:25,164 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-07 19:42:25,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-07 19:42:25,166 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-07 19:42:25,168 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2024-11-07 19:42:25,200 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 19:42:25,200 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 19:42:25,201 INFO L255 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-07 19:42:25,201 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:42:25,251 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:42:25,251 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 19:42:25,296 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:42:25,297 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-07 19:42:25,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [107808703] [2024-11-07 19:42:25,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [107808703] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 19:42:25,297 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-07 19:42:25,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2024-11-07 19:42:25,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184241922] [2024-11-07 19:42:25,297 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-07 19:42:25,297 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-07 19:42:25,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-07 19:42:25,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-07 19:42:25,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-11-07 19:42:25,320 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-11-07 19:42:25,320 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 52 transitions, 306 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 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 19:42:25,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:42:25,320 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-11-07 19:42:25,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:42:25,676 INFO L124 PetriNetUnfolderBase]: 809/1592 cut-off events. [2024-11-07 19:42:25,676 INFO L125 PetriNetUnfolderBase]: For 3218/3302 co-relation queries the response was YES. [2024-11-07 19:42:25,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5498 conditions, 1592 events. 809/1592 cut-off events. For 3218/3302 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 9646 event pairs, 114 based on Foata normal form. 16/1457 useless extension candidates. Maximal degree in co-relation 4315. Up to 517 conditions per place. [2024-11-07 19:42:25,683 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 122 selfloop transitions, 17 changer transitions 0/156 dead transitions. [2024-11-07 19:42:25,683 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 156 transitions, 1232 flow [2024-11-07 19:42:25,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-07 19:42:25,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-07 19:42:25,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 196 transitions. [2024-11-07 19:42:25,685 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5157894736842106 [2024-11-07 19:42:25,685 INFO L175 Difference]: Start difference. First operand has 70 places, 52 transitions, 306 flow. Second operand 10 states and 196 transitions. [2024-11-07 19:42:25,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 156 transitions, 1232 flow [2024-11-07 19:42:25,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 156 transitions, 1186 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-11-07 19:42:25,693 INFO L231 Difference]: Finished difference. Result has 77 places, 59 transitions, 366 flow [2024-11-07 19:42:25,693 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=366, PETRI_PLACES=77, PETRI_TRANSITIONS=59} [2024-11-07 19:42:25,693 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 41 predicate places. [2024-11-07 19:42:25,694 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 59 transitions, 366 flow [2024-11-07 19:42:25,694 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 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 19:42:25,694 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:42:25,694 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:42:25,697 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2024-11-07 19:42:25,896 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-07 19:42:25,897 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting f2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-07 19:42:25,897 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:42:25,897 INFO L85 PathProgramCache]: Analyzing trace with hash 921125357, now seen corresponding path program 1 times [2024-11-07 19:42:25,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-07 19:42:25,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [145586987] [2024-11-07 19:42:25,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:42:25,898 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-07 19:42:25,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-07 19:42:25,899 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-07 19:42:25,901 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2024-11-07 19:42:25,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-07 19:42:25,934 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-07 19:42:25,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-07 19:42:25,968 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2024-11-07 19:42:25,968 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-07 19:42:25,969 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (6 of 7 remaining) [2024-11-07 19:42:25,973 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (5 of 7 remaining) [2024-11-07 19:42:25,973 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2024-11-07 19:42:25,973 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 7 remaining) [2024-11-07 19:42:25,973 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err0ASSERT_VIOLATIONMEMORY_LEAK (2 of 7 remaining) [2024-11-07 19:42:25,973 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 7 remaining) [2024-11-07 19:42:25,973 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 7 remaining) [2024-11-07 19:42:25,980 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2024-11-07 19:42:26,174 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-07 19:42:26,175 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1] [2024-11-07 19:42:26,208 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-07 19:42:26,209 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-07 19:42:26,215 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 07:42:26 BasicIcfg [2024-11-07 19:42:26,215 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-07 19:42:26,216 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-07 19:42:26,216 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-07 19:42:26,216 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-07 19:42:26,216 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:42:20" (3/4) ... [2024-11-07 19:42:26,217 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-11-07 19:42:26,218 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-07 19:42:26,218 INFO L158 Benchmark]: Toolchain (without parser) took 6439.73ms. Allocated memory was 117.4MB in the beginning and 142.6MB in the end (delta: 25.2MB). Free memory was 91.8MB in the beginning and 66.5MB in the end (delta: 25.3MB). Peak memory consumption was 52.0MB. Max. memory is 16.1GB. [2024-11-07 19:42:26,219 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 83.9MB. Free memory was 66.1MB in the beginning and 66.1MB in the end (delta: 22.6kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-07 19:42:26,219 INFO L158 Benchmark]: CACSL2BoogieTranslator took 348.24ms. Allocated memory is still 117.4MB. Free memory was 91.6MB in the beginning and 71.3MB in the end (delta: 20.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-07 19:42:26,219 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.54ms. Allocated memory is still 117.4MB. Free memory was 71.0MB in the beginning and 69.4MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-07 19:42:26,219 INFO L158 Benchmark]: Boogie Preprocessor took 44.01ms. Allocated memory is still 117.4MB. Free memory was 69.4MB in the beginning and 67.4MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-07 19:42:26,219 INFO L158 Benchmark]: RCFGBuilder took 440.23ms. Allocated memory is still 117.4MB. Free memory was 67.4MB in the beginning and 86.8MB in the end (delta: -19.3MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2024-11-07 19:42:26,220 INFO L158 Benchmark]: TraceAbstraction took 5558.86ms. Allocated memory was 117.4MB in the beginning and 142.6MB in the end (delta: 25.2MB). Free memory was 86.1MB in the beginning and 66.5MB in the end (delta: 19.6MB). Peak memory consumption was 47.8MB. Max. memory is 16.1GB. [2024-11-07 19:42:26,220 INFO L158 Benchmark]: Witness Printer took 2.40ms. Allocated memory is still 142.6MB. Free memory was 66.5MB in the beginning and 66.5MB in the end (delta: 29.6kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-07 19:42:26,221 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 83.9MB. Free memory was 66.1MB in the beginning and 66.1MB in the end (delta: 22.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 348.24ms. Allocated memory is still 117.4MB. Free memory was 91.6MB in the beginning and 71.3MB in the end (delta: 20.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.54ms. Allocated memory is still 117.4MB. Free memory was 71.0MB in the beginning and 69.4MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 44.01ms. Allocated memory is still 117.4MB. Free memory was 69.4MB in the beginning and 67.4MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 440.23ms. Allocated memory is still 117.4MB. Free memory was 67.4MB in the beginning and 86.8MB in the end (delta: -19.3MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * TraceAbstraction took 5558.86ms. Allocated memory was 117.4MB in the beginning and 142.6MB in the end (delta: 25.2MB). Free memory was 86.1MB in the beginning and 66.5MB in the end (delta: 19.6MB). Peak memory consumption was 47.8MB. Max. memory is 16.1GB. * Witness Printer took 2.40ms. Allocated memory is still 142.6MB. Free memory was 66.5MB in the beginning and 66.5MB in the end (delta: 29.6kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 752]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 752. Possible FailurePath: [L754] 0 int _N; [L755] 0 atomic_int limit; [L775] 0 _N = 1 [L776] CALL 0 assume_abort_if_not(0 <= _N && _N <= 0x7fffffff - 1) [L750] COND FALSE 0 !(!cond) [L776] RET 0 assume_abort_if_not(0 <= _N && _N <= 0x7fffffff - 1) [L777] 0 pthread_t t1, t2; [L778] FCALL, FORK 0 pthread_create(&t1, 0, f1, 0) VAL [_N=1, limit=0, t1=0] [L757] 1 int i, bound; [L758] 1 int lim = _N; VAL [\old(arg)={0:0}, _N=1, arg={0:0}, lim=1, limit=0] [L779] FCALL, FORK 0 pthread_create(&t2, 0, f2, 0) VAL [_N=1, limit=0, t1=0, t2=1] [L766] 2 int i, bound; [L767] 2 int lim = _N + 1; VAL [\old(arg)={0:0}, _N=1, arg={0:0}, lim=2, limit=0] [L768] 2 limit = lim VAL [\old(arg)={0:0}, _N=1, arg={0:0}, lim=2, limit=2] [L759] 1 limit = lim VAL [\old(arg)={0:0}, _N=1, arg={0:0}, lim=1, limit=1] [L769] 2 bound = limit [L770] 2 i = 0 VAL [\old(arg)={0:0}, _N=1, arg={0:0}, bound=1, i=0, lim=2, limit=1] [L770] COND TRUE 2 i < bound [L770] 2 i++ VAL [\old(arg)={0:0}, _N=1, arg={0:0}, bound=1, i=1, lim=2, limit=1] [L770] COND FALSE 2 !(i < bound) [L771] CALL 2 __VERIFIER_assert(i == lim) [L753] COND TRUE 2 !expression [L753] CALL 2 reach_error() [L752] COND FALSE 2 !(0) VAL [_N=1, limit=1] [L752] 2 __assert_fail ("0", "generated/unwind2.h", 11, __extension__ __PRETTY_FUNCTION__) VAL [_N=1, limit=1] - UnprovableResult [Line: 774]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 778]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 779]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 752]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 57 locations, 7 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 5.4s, OverallIterations: 9, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 904 SdHoareTripleChecker+Valid, 1.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 894 mSDsluCounter, 126 SdHoareTripleChecker+Invalid, 1.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 101 mSDsCounter, 7 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1981 IncrementalHoareTripleChecker+Invalid, 1988 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7 mSolverCounterUnsat, 25 mSDtfsCounter, 1981 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 168 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=366occurred in iteration=8, InterpolantAutomatonStates: 66, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 106 NumberOfCodeBlocks, 106 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 126 ConstructedInterpolants, 0 QuantifiedInterpolants, 388 SizeOfPredicates, 26 NumberOfNonLiveVariables, 332 ConjunctsInSsa, 53 ConjunctsInUnsatCore, 12 InterpolantComputations, 4 PerfectInterpolantSequences, 4/16 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-11-07 19:42:26,242 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample