./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/weaver/parallel-misc-3.wvr.c --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/weaver/parallel-misc-3.wvr.c', '-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', 'b2ed7b18db6948b1f53058568aeeb46b9da6de135bdadf46ddc91e86240dfa66'] 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/weaver/parallel-misc-3.wvr.c -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 b2ed7b18db6948b1f53058568aeeb46b9da6de135bdadf46ddc91e86240dfa66 --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-07 19:32:11,474 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-07 19:32:11,560 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-07 19:32:11,566 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-07 19:32:11,566 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-07 19:32:11,586 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-07 19:32:11,587 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-07 19:32:11,587 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-07 19:32:11,587 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-07 19:32:11,587 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-07 19:32:11,587 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-07 19:32:11,588 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-07 19:32:11,588 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-07 19:32:11,588 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-07 19:32:11,588 INFO L153 SettingsManager]: * Use SBE=true [2024-11-07 19:32:11,588 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-07 19:32:11,588 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-07 19:32:11,588 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-07 19:32:11,588 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-07 19:32:11,588 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-07 19:32:11,588 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-07 19:32:11,588 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-07 19:32:11,588 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-07 19:32:11,588 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-07 19:32:11,588 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-07 19:32:11,588 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-07 19:32:11,589 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-07 19:32:11,589 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-07 19:32:11,589 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-07 19:32:11,589 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-07 19:32:11,589 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-07 19:32:11,589 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-07 19:32:11,589 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-07 19:32:11,589 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 19:32:11,589 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-07 19:32:11,589 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-07 19:32:11,589 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-07 19:32:11,589 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-07 19:32:11,589 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-07 19:32:11,589 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-07 19:32:11,589 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-07 19:32:11,589 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-07 19:32:11,589 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 -> b2ed7b18db6948b1f53058568aeeb46b9da6de135bdadf46ddc91e86240dfa66 [2024-11-07 19:32:11,804 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-07 19:32:11,808 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-07 19:32:11,811 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-07 19:32:11,812 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-07 19:32:11,812 INFO L274 PluginConnector]: CDTParser initialized [2024-11-07 19:32:11,813 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-misc-3.wvr.c [2024-11-07 19:32:12,889 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-07 19:32:13,072 INFO L384 CDTParser]: Found 1 translation units. [2024-11-07 19:32:13,073 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-3.wvr.c [2024-11-07 19:32:13,080 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/5b9cb4834/016a8c68cf73402e982cc9bb5e1d456d/FLAG73ebfa9bd [2024-11-07 19:32:13,449 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/5b9cb4834/016a8c68cf73402e982cc9bb5e1d456d [2024-11-07 19:32:13,451 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-07 19:32:13,452 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-07 19:32:13,452 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-07 19:32:13,452 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-07 19:32:13,455 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-07 19:32:13,455 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:32:13" (1/1) ... [2024-11-07 19:32:13,456 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@558287d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:32:13, skipping insertion in model container [2024-11-07 19:32:13,456 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:32:13" (1/1) ... [2024-11-07 19:32:13,465 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-07 19:32:13,563 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 19:32:13,568 INFO L200 MainTranslator]: Completed pre-run [2024-11-07 19:32:13,583 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 19:32:13,593 INFO L204 MainTranslator]: Completed translation [2024-11-07 19:32:13,593 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:32:13 WrapperNode [2024-11-07 19:32:13,593 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-07 19:32:13,594 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-07 19:32:13,594 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-07 19:32:13,594 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-07 19:32:13,598 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:32:13" (1/1) ... [2024-11-07 19:32:13,606 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:32:13" (1/1) ... [2024-11-07 19:32:13,618 INFO L138 Inliner]: procedures = 18, calls = 10, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 42 [2024-11-07 19:32:13,619 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-07 19:32:13,619 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-07 19:32:13,619 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-07 19:32:13,620 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-07 19:32:13,624 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:32:13" (1/1) ... [2024-11-07 19:32:13,624 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:32:13" (1/1) ... [2024-11-07 19:32:13,625 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:32:13" (1/1) ... [2024-11-07 19:32:13,636 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 19:32:13,637 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:32:13" (1/1) ... [2024-11-07 19:32:13,637 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:32:13" (1/1) ... [2024-11-07 19:32:13,643 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:32:13" (1/1) ... [2024-11-07 19:32:13,645 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:32:13" (1/1) ... [2024-11-07 19:32:13,646 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:32:13" (1/1) ... [2024-11-07 19:32:13,648 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:32:13" (1/1) ... [2024-11-07 19:32:13,649 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-07 19:32:13,649 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-07 19:32:13,653 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-07 19:32:13,653 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-07 19:32:13,654 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:32:13" (1/1) ... [2024-11-07 19:32:13,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 19:32:13,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:32:13,677 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 19:32:13,680 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 19:32:13,693 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-07 19:32:13,693 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-07 19:32:13,693 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-07 19:32:13,693 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-07 19:32:13,693 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-07 19:32:13,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-07 19:32:13,693 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-07 19:32:13,694 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-07 19:32:13,694 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 19:32:13,750 INFO L238 CfgBuilder]: Building ICFG [2024-11-07 19:32:13,752 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-07 19:32:13,868 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-07 19:32:13,868 INFO L287 CfgBuilder]: Performing block encoding [2024-11-07 19:32:13,935 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-07 19:32:13,936 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-07 19:32:13,936 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:32:13 BoogieIcfgContainer [2024-11-07 19:32:13,936 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-07 19:32:13,937 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-07 19:32:13,937 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-07 19:32:13,941 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-07 19:32:13,941 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 07:32:13" (1/3) ... [2024-11-07 19:32:13,941 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b4e4a63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:32:13, skipping insertion in model container [2024-11-07 19:32:13,941 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:32:13" (2/3) ... [2024-11-07 19:32:13,941 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b4e4a63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:32:13, skipping insertion in model container [2024-11-07 19:32:13,941 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:32:13" (3/3) ... [2024-11-07 19:32:13,942 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-3.wvr.c [2024-11-07 19:32:13,952 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-07 19:32:13,952 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-07 19:32:13,952 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-07 19:32:13,987 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-07 19:32:14,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 35 places, 32 transitions, 78 flow [2024-11-07 19:32:14,029 INFO L124 PetriNetUnfolderBase]: 4/30 cut-off events. [2024-11-07 19:32:14,033 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-07 19:32:14,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39 conditions, 30 events. 4/30 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 64 event pairs, 0 based on Foata normal form. 0/24 useless extension candidates. Maximal degree in co-relation 23. Up to 2 conditions per place. [2024-11-07 19:32:14,035 INFO L82 GeneralOperation]: Start removeDead. Operand has 35 places, 32 transitions, 78 flow [2024-11-07 19:32:14,036 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 32 places, 29 transitions, 70 flow [2024-11-07 19:32:14,041 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 19:32:14,048 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;@566c8f2a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 19:32:14,048 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-07 19:32:14,054 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-07 19:32:14,054 INFO L124 PetriNetUnfolderBase]: 4/26 cut-off events. [2024-11-07 19:32:14,054 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-07 19:32:14,055 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:32:14,055 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:32:14,055 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 19:32:14,069 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:32:14,070 INFO L85 PathProgramCache]: Analyzing trace with hash -73277144, now seen corresponding path program 1 times [2024-11-07 19:32:14,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:32:14,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873758392] [2024-11-07 19:32:14,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:32:14,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:32:14,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:32:14,205 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 19:32:14,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:32:14,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873758392] [2024-11-07 19:32:14,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873758392] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:32:14,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:32:14,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 19:32:14,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436463291] [2024-11-07 19:32:14,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:32:14,212 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 19:32:14,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:32:14,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 19:32:14,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 19:32:14,236 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2024-11-07 19:32:14,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 29 transitions, 70 flow. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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 19:32:14,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:32:14,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2024-11-07 19:32:14,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:32:14,339 INFO L124 PetriNetUnfolderBase]: 146/284 cut-off events. [2024-11-07 19:32:14,339 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2024-11-07 19:32:14,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 518 conditions, 284 events. 146/284 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1128 event pairs, 12 based on Foata normal form. 2/251 useless extension candidates. Maximal degree in co-relation 458. Up to 185 conditions per place. [2024-11-07 19:32:14,344 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 21 selfloop transitions, 5 changer transitions 1/38 dead transitions. [2024-11-07 19:32:14,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 38 transitions, 151 flow [2024-11-07 19:32:14,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 19:32:14,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 19:32:14,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 71 transitions. [2024-11-07 19:32:14,355 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7395833333333334 [2024-11-07 19:32:14,356 INFO L175 Difference]: Start difference. First operand has 32 places, 29 transitions, 70 flow. Second operand 3 states and 71 transitions. [2024-11-07 19:32:14,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 38 transitions, 151 flow [2024-11-07 19:32:14,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 38 transitions, 137 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-07 19:32:14,361 INFO L231 Difference]: Finished difference. Result has 29 places, 31 transitions, 91 flow [2024-11-07 19:32:14,363 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=91, PETRI_PLACES=29, PETRI_TRANSITIONS=31} [2024-11-07 19:32:14,365 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, -3 predicate places. [2024-11-07 19:32:14,367 INFO L471 AbstractCegarLoop]: Abstraction has has 29 places, 31 transitions, 91 flow [2024-11-07 19:32:14,367 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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 19:32:14,367 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:32:14,367 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:32:14,368 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-07 19:32:14,368 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 19:32:14,369 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:32:14,369 INFO L85 PathProgramCache]: Analyzing trace with hash -364959184, now seen corresponding path program 1 times [2024-11-07 19:32:14,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:32:14,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505612424] [2024-11-07 19:32:14,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:32:14,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:32:14,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:32:14,473 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 19:32:14,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:32:14,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505612424] [2024-11-07 19:32:14,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505612424] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:32:14,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:32:14,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 19:32:14,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778698250] [2024-11-07 19:32:14,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:32:14,474 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 19:32:14,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:32:14,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 19:32:14,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 19:32:14,477 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 32 [2024-11-07 19:32:14,477 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 31 transitions, 91 flow. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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 19:32:14,477 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:32:14,477 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 32 [2024-11-07 19:32:14,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:32:14,555 INFO L124 PetriNetUnfolderBase]: 129/272 cut-off events. [2024-11-07 19:32:14,555 INFO L125 PetriNetUnfolderBase]: For 48/60 co-relation queries the response was YES. [2024-11-07 19:32:14,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 543 conditions, 272 events. 129/272 cut-off events. For 48/60 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1198 event pairs, 22 based on Foata normal form. 11/244 useless extension candidates. Maximal degree in co-relation 341. Up to 108 conditions per place. [2024-11-07 19:32:14,557 INFO L140 encePairwiseOnDemand]: 29/32 looper letters, 22 selfloop transitions, 2 changer transitions 0/39 dead transitions. [2024-11-07 19:32:14,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 39 transitions, 160 flow [2024-11-07 19:32:14,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 19:32:14,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 19:32:14,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 71 transitions. [2024-11-07 19:32:14,559 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7395833333333334 [2024-11-07 19:32:14,559 INFO L175 Difference]: Start difference. First operand has 29 places, 31 transitions, 91 flow. Second operand 3 states and 71 transitions. [2024-11-07 19:32:14,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 39 transitions, 160 flow [2024-11-07 19:32:14,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 39 transitions, 153 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-07 19:32:14,560 INFO L231 Difference]: Finished difference. Result has 31 places, 32 transitions, 96 flow [2024-11-07 19:32:14,561 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=31, PETRI_TRANSITIONS=32} [2024-11-07 19:32:14,562 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, -1 predicate places. [2024-11-07 19:32:14,562 INFO L471 AbstractCegarLoop]: Abstraction has has 31 places, 32 transitions, 96 flow [2024-11-07 19:32:14,562 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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 19:32:14,562 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:32:14,562 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:32:14,563 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-07 19:32:14,563 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 19:32:14,563 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:32:14,563 INFO L85 PathProgramCache]: Analyzing trace with hash -674629076, now seen corresponding path program 1 times [2024-11-07 19:32:14,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:32:14,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550231929] [2024-11-07 19:32:14,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:32:14,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:32:14,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:32:14,653 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:32:14,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:32:14,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550231929] [2024-11-07 19:32:14,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550231929] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:32:14,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:32:14,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 19:32:14,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174888870] [2024-11-07 19:32:14,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:32:14,654 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 19:32:14,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:32:14,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 19:32:14,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 19:32:14,658 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 32 [2024-11-07 19:32:14,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 32 transitions, 96 flow. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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 19:32:14,658 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:32:14,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 32 [2024-11-07 19:32:14,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:32:14,713 INFO L124 PetriNetUnfolderBase]: 128/302 cut-off events. [2024-11-07 19:32:14,714 INFO L125 PetriNetUnfolderBase]: For 77/83 co-relation queries the response was YES. [2024-11-07 19:32:14,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 617 conditions, 302 events. 128/302 cut-off events. For 77/83 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1482 event pairs, 22 based on Foata normal form. 9/262 useless extension candidates. Maximal degree in co-relation 330. Up to 107 conditions per place. [2024-11-07 19:32:14,718 INFO L140 encePairwiseOnDemand]: 29/32 looper letters, 23 selfloop transitions, 2 changer transitions 0/40 dead transitions. [2024-11-07 19:32:14,719 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 40 transitions, 174 flow [2024-11-07 19:32:14,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 19:32:14,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 19:32:14,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 70 transitions. [2024-11-07 19:32:14,720 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7291666666666666 [2024-11-07 19:32:14,721 INFO L175 Difference]: Start difference. First operand has 31 places, 32 transitions, 96 flow. Second operand 3 states and 70 transitions. [2024-11-07 19:32:14,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 40 transitions, 174 flow [2024-11-07 19:32:14,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 40 transitions, 171 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-07 19:32:14,723 INFO L231 Difference]: Finished difference. Result has 33 places, 33 transitions, 106 flow [2024-11-07 19:32:14,723 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=33, PETRI_TRANSITIONS=33} [2024-11-07 19:32:14,724 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 1 predicate places. [2024-11-07 19:32:14,724 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 33 transitions, 106 flow [2024-11-07 19:32:14,724 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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 19:32:14,724 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:32:14,724 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:32:14,724 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-07 19:32:14,724 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 19:32:14,724 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:32:14,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1346235286, now seen corresponding path program 1 times [2024-11-07 19:32:14,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:32:14,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779176022] [2024-11-07 19:32:14,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:32:14,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:32:14,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:32:14,907 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 19:32:14,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:32:14,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779176022] [2024-11-07 19:32:14,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779176022] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:32:14,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:32:14,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 19:32:14,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78183482] [2024-11-07 19:32:14,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:32:14,908 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 19:32:14,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:32:14,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 19:32:14,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-07 19:32:14,919 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2024-11-07 19:32:14,920 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 33 transitions, 106 flow. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 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 19:32:14,920 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:32:14,920 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2024-11-07 19:32:14,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:32:15,006 INFO L124 PetriNetUnfolderBase]: 218/428 cut-off events. [2024-11-07 19:32:15,007 INFO L125 PetriNetUnfolderBase]: For 135/163 co-relation queries the response was YES. [2024-11-07 19:32:15,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1020 conditions, 428 events. 218/428 cut-off events. For 135/163 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1788 event pairs, 50 based on Foata normal form. 16/393 useless extension candidates. Maximal degree in co-relation 379. Up to 139 conditions per place. [2024-11-07 19:32:15,010 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 33 selfloop transitions, 5 changer transitions 0/51 dead transitions. [2024-11-07 19:32:15,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 51 transitions, 240 flow [2024-11-07 19:32:15,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 19:32:15,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 19:32:15,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 91 transitions. [2024-11-07 19:32:15,013 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7109375 [2024-11-07 19:32:15,013 INFO L175 Difference]: Start difference. First operand has 33 places, 33 transitions, 106 flow. Second operand 4 states and 91 transitions. [2024-11-07 19:32:15,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 51 transitions, 240 flow [2024-11-07 19:32:15,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 51 transitions, 236 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-07 19:32:15,014 INFO L231 Difference]: Finished difference. Result has 37 places, 35 transitions, 136 flow [2024-11-07 19:32:15,014 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=136, PETRI_PLACES=37, PETRI_TRANSITIONS=35} [2024-11-07 19:32:15,015 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 5 predicate places. [2024-11-07 19:32:15,015 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 35 transitions, 136 flow [2024-11-07 19:32:15,015 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 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 19:32:15,015 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:32:15,016 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:32:15,016 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-07 19:32:15,018 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 19:32:15,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:32:15,018 INFO L85 PathProgramCache]: Analyzing trace with hash -939977965, now seen corresponding path program 1 times [2024-11-07 19:32:15,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:32:15,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760701360] [2024-11-07 19:32:15,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:32:15,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:32:15,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:32:15,187 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-07 19:32:15,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:32:15,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760701360] [2024-11-07 19:32:15,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760701360] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:32:15,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:32:15,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 19:32:15,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908590337] [2024-11-07 19:32:15,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:32:15,187 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 19:32:15,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:32:15,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 19:32:15,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-07 19:32:15,195 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2024-11-07 19:32:15,196 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 35 transitions, 136 flow. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 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 19:32:15,196 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:32:15,196 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2024-11-07 19:32:15,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:32:15,289 INFO L124 PetriNetUnfolderBase]: 392/744 cut-off events. [2024-11-07 19:32:15,289 INFO L125 PetriNetUnfolderBase]: For 772/806 co-relation queries the response was YES. [2024-11-07 19:32:15,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1982 conditions, 744 events. 392/744 cut-off events. For 772/806 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 4002 event pairs, 93 based on Foata normal form. 36/691 useless extension candidates. Maximal degree in co-relation 1034. Up to 228 conditions per place. [2024-11-07 19:32:15,294 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 39 selfloop transitions, 5 changer transitions 0/57 dead transitions. [2024-11-07 19:32:15,294 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 57 transitions, 330 flow [2024-11-07 19:32:15,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 19:32:15,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 19:32:15,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 91 transitions. [2024-11-07 19:32:15,295 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7109375 [2024-11-07 19:32:15,295 INFO L175 Difference]: Start difference. First operand has 37 places, 35 transitions, 136 flow. Second operand 4 states and 91 transitions. [2024-11-07 19:32:15,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 57 transitions, 330 flow [2024-11-07 19:32:15,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 57 transitions, 324 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-11-07 19:32:15,300 INFO L231 Difference]: Finished difference. Result has 42 places, 37 transitions, 166 flow [2024-11-07 19:32:15,300 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=166, PETRI_PLACES=42, PETRI_TRANSITIONS=37} [2024-11-07 19:32:15,300 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 10 predicate places. [2024-11-07 19:32:15,300 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 37 transitions, 166 flow [2024-11-07 19:32:15,301 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 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 19:32:15,301 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:32:15,301 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:32:15,301 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-07 19:32:15,301 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 19:32:15,301 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:32:15,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1840485683, now seen corresponding path program 1 times [2024-11-07 19:32:15,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:32:15,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463654626] [2024-11-07 19:32:15,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:32:15,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:32:15,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:32:15,409 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 19:32:15,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:32:15,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463654626] [2024-11-07 19:32:15,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463654626] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 19:32:15,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [144708404] [2024-11-07 19:32:15,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:32:15,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:32:15,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:32:15,411 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 19:32:15,413 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 19:32:15,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:32:15,470 INFO L255 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-07 19:32:15,472 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:32:15,520 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 19:32:15,520 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 19:32:15,569 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 19:32:15,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [144708404] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 19:32:15,570 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 19:32:15,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 4 [2024-11-07 19:32:15,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893337735] [2024-11-07 19:32:15,570 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 19:32:15,570 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 19:32:15,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:32:15,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 19:32:15,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-07 19:32:15,574 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2024-11-07 19:32:15,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 37 transitions, 166 flow. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:32:15,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:32:15,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2024-11-07 19:32:15,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:32:15,807 INFO L124 PetriNetUnfolderBase]: 956/1991 cut-off events. [2024-11-07 19:32:15,807 INFO L125 PetriNetUnfolderBase]: For 2306/2413 co-relation queries the response was YES. [2024-11-07 19:32:15,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5758 conditions, 1991 events. 956/1991 cut-off events. For 2306/2413 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 11863 event pairs, 145 based on Foata normal form. 40/1993 useless extension candidates. Maximal degree in co-relation 1528. Up to 658 conditions per place. [2024-11-07 19:32:15,817 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 65 selfloop transitions, 15 changer transitions 1/94 dead transitions. [2024-11-07 19:32:15,817 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 94 transitions, 607 flow [2024-11-07 19:32:15,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 19:32:15,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 19:32:15,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 128 transitions. [2024-11-07 19:32:15,818 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8 [2024-11-07 19:32:15,818 INFO L175 Difference]: Start difference. First operand has 42 places, 37 transitions, 166 flow. Second operand 5 states and 128 transitions. [2024-11-07 19:32:15,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 94 transitions, 607 flow [2024-11-07 19:32:15,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 94 transitions, 599 flow, removed 4 selfloop flow, removed 0 redundant places. [2024-11-07 19:32:15,821 INFO L231 Difference]: Finished difference. Result has 47 places, 49 transitions, 261 flow [2024-11-07 19:32:15,821 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=261, PETRI_PLACES=47, PETRI_TRANSITIONS=49} [2024-11-07 19:32:15,821 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 15 predicate places. [2024-11-07 19:32:15,821 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 49 transitions, 261 flow [2024-11-07 19:32:15,822 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:32:15,822 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:32:15,822 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:32:15,835 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 19:32:16,026 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:32:16,027 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 19:32:16,027 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:32:16,027 INFO L85 PathProgramCache]: Analyzing trace with hash 899236193, now seen corresponding path program 2 times [2024-11-07 19:32:16,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:32:16,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450202396] [2024-11-07 19:32:16,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:32:16,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:32:16,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:32:16,125 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 19:32:16,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:32:16,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450202396] [2024-11-07 19:32:16,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450202396] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 19:32:16,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [769321363] [2024-11-07 19:32:16,125 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 19:32:16,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:32:16,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:32:16,128 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 19:32:16,129 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 19:32:16,185 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 19:32:16,185 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 19:32:16,186 INFO L255 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-07 19:32:16,188 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:32:16,230 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 19:32:16,230 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 19:32:16,266 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 19:32:16,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [769321363] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 19:32:16,266 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 19:32:16,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2024-11-07 19:32:16,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952152236] [2024-11-07 19:32:16,266 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 19:32:16,266 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-07 19:32:16,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:32:16,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-07 19:32:16,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-07 19:32:16,270 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2024-11-07 19:32:16,270 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 49 transitions, 261 flow. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:32:16,270 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:32:16,270 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2024-11-07 19:32:16,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:32:16,645 INFO L124 PetriNetUnfolderBase]: 1767/3692 cut-off events. [2024-11-07 19:32:16,645 INFO L125 PetriNetUnfolderBase]: For 5885/6121 co-relation queries the response was YES. [2024-11-07 19:32:16,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11654 conditions, 3692 events. 1767/3692 cut-off events. For 5885/6121 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 26093 event pairs, 177 based on Foata normal form. 94/3717 useless extension candidates. Maximal degree in co-relation 3701. Up to 1033 conditions per place. [2024-11-07 19:32:16,684 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 81 selfloop transitions, 31 changer transitions 1/126 dead transitions. [2024-11-07 19:32:16,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 126 transitions, 895 flow [2024-11-07 19:32:16,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-07 19:32:16,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-07 19:32:16,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 156 transitions. [2024-11-07 19:32:16,685 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8125 [2024-11-07 19:32:16,685 INFO L175 Difference]: Start difference. First operand has 47 places, 49 transitions, 261 flow. Second operand 6 states and 156 transitions. [2024-11-07 19:32:16,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 126 transitions, 895 flow [2024-11-07 19:32:16,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 126 transitions, 839 flow, removed 28 selfloop flow, removed 0 redundant places. [2024-11-07 19:32:16,689 INFO L231 Difference]: Finished difference. Result has 53 places, 65 transitions, 388 flow [2024-11-07 19:32:16,690 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=237, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=388, PETRI_PLACES=53, PETRI_TRANSITIONS=65} [2024-11-07 19:32:16,690 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 21 predicate places. [2024-11-07 19:32:16,690 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 65 transitions, 388 flow [2024-11-07 19:32:16,690 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:32:16,690 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:32:16,690 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:32:16,703 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-07 19:32:16,894 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:32:16,895 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 19:32:16,895 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:32:16,895 INFO L85 PathProgramCache]: Analyzing trace with hash 962951687, now seen corresponding path program 3 times [2024-11-07 19:32:16,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:32:16,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246907845] [2024-11-07 19:32:16,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:32:16,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:32:16,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:32:17,123 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-07 19:32:17,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:32:17,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246907845] [2024-11-07 19:32:17,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246907845] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 19:32:17,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [76923709] [2024-11-07 19:32:17,124 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-07 19:32:17,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:32:17,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:32:17,126 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 19:32:17,127 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 19:32:17,175 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-07 19:32:17,175 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 19:32:17,176 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-07 19:32:17,177 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:32:17,227 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-07 19:32:17,227 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-07 19:32:17,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [76923709] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:32:17,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-07 19:32:17,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2024-11-07 19:32:17,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348787086] [2024-11-07 19:32:17,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:32:17,227 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 19:32:17,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:32:17,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 19:32:17,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-07 19:32:17,231 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 32 [2024-11-07 19:32:17,232 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 65 transitions, 388 flow. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 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 19:32:17,232 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:32:17,232 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 32 [2024-11-07 19:32:17,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:32:17,694 INFO L124 PetriNetUnfolderBase]: 3183/5784 cut-off events. [2024-11-07 19:32:17,694 INFO L125 PetriNetUnfolderBase]: For 10475/10757 co-relation queries the response was YES. [2024-11-07 19:32:17,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18837 conditions, 5784 events. 3183/5784 cut-off events. For 10475/10757 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 40721 event pairs, 740 based on Foata normal form. 194/5863 useless extension candidates. Maximal degree in co-relation 7266. Up to 2151 conditions per place. [2024-11-07 19:32:17,719 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 80 selfloop transitions, 9 changer transitions 0/115 dead transitions. [2024-11-07 19:32:17,719 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 115 transitions, 874 flow [2024-11-07 19:32:17,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 19:32:17,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 19:32:17,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 86 transitions. [2024-11-07 19:32:17,720 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.671875 [2024-11-07 19:32:17,720 INFO L175 Difference]: Start difference. First operand has 53 places, 65 transitions, 388 flow. Second operand 4 states and 86 transitions. [2024-11-07 19:32:17,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 115 transitions, 874 flow [2024-11-07 19:32:17,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 115 transitions, 825 flow, removed 17 selfloop flow, removed 1 redundant places. [2024-11-07 19:32:17,726 INFO L231 Difference]: Finished difference. Result has 57 places, 68 transitions, 409 flow [2024-11-07 19:32:17,726 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=361, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=409, PETRI_PLACES=57, PETRI_TRANSITIONS=68} [2024-11-07 19:32:17,727 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 25 predicate places. [2024-11-07 19:32:17,727 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 68 transitions, 409 flow [2024-11-07 19:32:17,727 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 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 19:32:17,727 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:32:17,727 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:32:17,739 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-07 19:32:17,930 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:32:17,930 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 19:32:17,934 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:32:17,934 INFO L85 PathProgramCache]: Analyzing trace with hash 1404958587, now seen corresponding path program 4 times [2024-11-07 19:32:17,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:32:17,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765246239] [2024-11-07 19:32:17,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:32:17,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:32:17,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:32:18,013 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-07 19:32:18,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:32:18,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765246239] [2024-11-07 19:32:18,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765246239] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:32:18,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:32:18,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-07 19:32:18,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873905489] [2024-11-07 19:32:18,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:32:18,015 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 19:32:18,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:32:18,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 19:32:18,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 19:32:18,017 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2024-11-07 19:32:18,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 68 transitions, 409 flow. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 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 19:32:18,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:32:18,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2024-11-07 19:32:18,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:32:18,351 INFO L124 PetriNetUnfolderBase]: 1938/4022 cut-off events. [2024-11-07 19:32:18,351 INFO L125 PetriNetUnfolderBase]: For 10867/11070 co-relation queries the response was YES. [2024-11-07 19:32:18,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13454 conditions, 4022 events. 1938/4022 cut-off events. For 10867/11070 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 29745 event pairs, 651 based on Foata normal form. 373/4166 useless extension candidates. Maximal degree in co-relation 5768. Up to 1795 conditions per place. [2024-11-07 19:32:18,374 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 56 selfloop transitions, 5 changer transitions 0/89 dead transitions. [2024-11-07 19:32:18,374 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 89 transitions, 647 flow [2024-11-07 19:32:18,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 19:32:18,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 19:32:18,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 81 transitions. [2024-11-07 19:32:18,376 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6328125 [2024-11-07 19:32:18,376 INFO L175 Difference]: Start difference. First operand has 57 places, 68 transitions, 409 flow. Second operand 4 states and 81 transitions. [2024-11-07 19:32:18,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 89 transitions, 647 flow [2024-11-07 19:32:18,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 89 transitions, 639 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-11-07 19:32:18,383 INFO L231 Difference]: Finished difference. Result has 61 places, 66 transitions, 404 flow [2024-11-07 19:32:18,383 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=381, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=404, PETRI_PLACES=61, PETRI_TRANSITIONS=66} [2024-11-07 19:32:18,384 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 29 predicate places. [2024-11-07 19:32:18,384 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 66 transitions, 404 flow [2024-11-07 19:32:18,385 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 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 19:32:18,385 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:32:18,385 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:32:18,385 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-07 19:32:18,385 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 19:32:18,385 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:32:18,385 INFO L85 PathProgramCache]: Analyzing trace with hash -1332464501, now seen corresponding path program 5 times [2024-11-07 19:32:18,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:32:18,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987315777] [2024-11-07 19:32:18,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:32:18,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:32:18,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:32:18,649 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-07 19:32:18,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:32:18,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987315777] [2024-11-07 19:32:18,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987315777] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 19:32:18,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [676939950] [2024-11-07 19:32:18,650 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-07 19:32:18,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:32:18,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:32:18,653 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 19:32:18,654 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 19:32:18,710 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-07 19:32:18,710 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 19:32:18,711 INFO L255 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-07 19:32:18,713 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:32:18,921 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-07 19:32:18,922 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 19:32:19,020 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-07 19:32:19,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [676939950] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-07 19:32:19,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-07 19:32:19,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7, 6] total 13 [2024-11-07 19:32:19,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480361485] [2024-11-07 19:32:19,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:32:19,021 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 19:32:19,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:32:19,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 19:32:19,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2024-11-07 19:32:19,024 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 32 [2024-11-07 19:32:19,024 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 66 transitions, 404 flow. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 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 19:32:19,024 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:32:19,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 32 [2024-11-07 19:32:19,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:32:19,347 INFO L124 PetriNetUnfolderBase]: 2265/4447 cut-off events. [2024-11-07 19:32:19,347 INFO L125 PetriNetUnfolderBase]: For 17337/17751 co-relation queries the response was YES. [2024-11-07 19:32:19,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16548 conditions, 4447 events. 2265/4447 cut-off events. For 17337/17751 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 29438 event pairs, 435 based on Foata normal form. 127/4508 useless extension candidates. Maximal degree in co-relation 6766. Up to 1942 conditions per place. [2024-11-07 19:32:19,368 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 50 selfloop transitions, 9 changer transitions 0/86 dead transitions. [2024-11-07 19:32:19,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 86 transitions, 666 flow [2024-11-07 19:32:19,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 19:32:19,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 19:32:19,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 84 transitions. [2024-11-07 19:32:19,369 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.65625 [2024-11-07 19:32:19,369 INFO L175 Difference]: Start difference. First operand has 61 places, 66 transitions, 404 flow. Second operand 4 states and 84 transitions. [2024-11-07 19:32:19,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 86 transitions, 666 flow [2024-11-07 19:32:19,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 86 transitions, 638 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-11-07 19:32:19,377 INFO L231 Difference]: Finished difference. Result has 62 places, 69 transitions, 438 flow [2024-11-07 19:32:19,377 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=390, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=438, PETRI_PLACES=62, PETRI_TRANSITIONS=69} [2024-11-07 19:32:19,378 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 30 predicate places. [2024-11-07 19:32:19,378 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 69 transitions, 438 flow [2024-11-07 19:32:19,378 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 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 19:32:19,378 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:32:19,378 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:32:19,392 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 19:32:19,578 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,SelfDestructingSolverStorable9 [2024-11-07 19:32:19,579 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 19:32:19,579 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:32:19,579 INFO L85 PathProgramCache]: Analyzing trace with hash 542951729, now seen corresponding path program 6 times [2024-11-07 19:32:19,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:32:19,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305942170] [2024-11-07 19:32:19,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:32:19,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:32:19,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:32:19,644 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-07 19:32:19,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:32:19,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305942170] [2024-11-07 19:32:19,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305942170] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:32:19,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:32:19,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-07 19:32:19,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610442848] [2024-11-07 19:32:19,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:32:19,645 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 19:32:19,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:32:19,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 19:32:19,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 19:32:19,647 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2024-11-07 19:32:19,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 69 transitions, 438 flow. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 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 19:32:19,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:32:19,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2024-11-07 19:32:19,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:32:19,745 INFO L124 PetriNetUnfolderBase]: 426/974 cut-off events. [2024-11-07 19:32:19,745 INFO L125 PetriNetUnfolderBase]: For 4375/4482 co-relation queries the response was YES. [2024-11-07 19:32:19,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3809 conditions, 974 events. 426/974 cut-off events. For 4375/4482 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 5426 event pairs, 132 based on Foata normal form. 83/1024 useless extension candidates. Maximal degree in co-relation 1567. Up to 380 conditions per place. [2024-11-07 19:32:19,747 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 0 selfloop transitions, 0 changer transitions 55/55 dead transitions. [2024-11-07 19:32:19,747 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 55 transitions, 438 flow [2024-11-07 19:32:19,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 19:32:19,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 19:32:19,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 79 transitions. [2024-11-07 19:32:19,748 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6171875 [2024-11-07 19:32:19,748 INFO L175 Difference]: Start difference. First operand has 62 places, 69 transitions, 438 flow. Second operand 4 states and 79 transitions. [2024-11-07 19:32:19,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 55 transitions, 438 flow [2024-11-07 19:32:19,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 55 transitions, 418 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-11-07 19:32:19,751 INFO L231 Difference]: Finished difference. Result has 60 places, 0 transitions, 0 flow [2024-11-07 19:32:19,751 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=60, PETRI_TRANSITIONS=0} [2024-11-07 19:32:19,751 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 28 predicate places. [2024-11-07 19:32:19,751 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 0 transitions, 0 flow [2024-11-07 19:32:19,751 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 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 19:32:19,753 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (3 of 4 remaining) [2024-11-07 19:32:19,753 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (2 of 4 remaining) [2024-11-07 19:32:19,753 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-11-07 19:32:19,753 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-11-07 19:32:19,753 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-07 19:32:19,754 INFO L407 BasicCegarLoop]: Path program histogram: [6, 1, 1, 1, 1, 1] [2024-11-07 19:32:19,756 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-07 19:32:19,756 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-07 19:32:19,758 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 07:32:19 BasicIcfg [2024-11-07 19:32:19,759 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-07 19:32:19,759 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-07 19:32:19,759 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-07 19:32:19,759 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-07 19:32:19,759 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:32:13" (3/4) ... [2024-11-07 19:32:19,761 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-07 19:32:19,762 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-11-07 19:32:19,762 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-11-07 19:32:19,764 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 43 nodes and edges [2024-11-07 19:32:19,765 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2024-11-07 19:32:19,765 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2024-11-07 19:32:19,765 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-07 19:32:19,814 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-07 19:32:19,815 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-07 19:32:19,815 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-07 19:32:19,816 INFO L158 Benchmark]: Toolchain (without parser) took 6363.68ms. Allocated memory was 117.4MB in the beginning and 411.0MB in the end (delta: 293.6MB). Free memory was 92.6MB in the beginning and 262.6MB in the end (delta: -170.1MB). Peak memory consumption was 118.0MB. Max. memory is 16.1GB. [2024-11-07 19:32:19,816 INFO L158 Benchmark]: CDTParser took 0.60ms. Allocated memory is still 117.4MB. Free memory is still 81.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-07 19:32:19,817 INFO L158 Benchmark]: CACSL2BoogieTranslator took 141.20ms. Allocated memory is still 117.4MB. Free memory was 92.4MB in the beginning and 81.2MB in the end (delta: 11.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-07 19:32:19,817 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.93ms. Allocated memory is still 117.4MB. Free memory was 81.2MB in the beginning and 80.1MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-07 19:32:19,817 INFO L158 Benchmark]: Boogie Preprocessor took 29.62ms. Allocated memory is still 117.4MB. Free memory was 80.1MB in the beginning and 78.8MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-07 19:32:19,817 INFO L158 Benchmark]: RCFGBuilder took 286.55ms. Allocated memory is still 117.4MB. Free memory was 78.7MB in the beginning and 58.0MB in the end (delta: 20.7MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-11-07 19:32:19,817 INFO L158 Benchmark]: TraceAbstraction took 5821.24ms. Allocated memory was 117.4MB in the beginning and 411.0MB in the end (delta: 293.6MB). Free memory was 57.4MB in the beginning and 266.8MB in the end (delta: -209.4MB). Peak memory consumption was 294.3MB. Max. memory is 16.1GB. [2024-11-07 19:32:19,818 INFO L158 Benchmark]: Witness Printer took 55.94ms. Allocated memory is still 411.0MB. Free memory was 266.8MB in the beginning and 262.6MB in the end (delta: 4.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-07 19:32:19,819 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.60ms. Allocated memory is still 117.4MB. Free memory is still 81.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 141.20ms. Allocated memory is still 117.4MB. Free memory was 92.4MB in the beginning and 81.2MB in the end (delta: 11.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 24.93ms. Allocated memory is still 117.4MB. Free memory was 81.2MB in the beginning and 80.1MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 29.62ms. Allocated memory is still 117.4MB. Free memory was 80.1MB in the beginning and 78.8MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 286.55ms. Allocated memory is still 117.4MB. Free memory was 78.7MB in the beginning and 58.0MB in the end (delta: 20.7MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 5821.24ms. Allocated memory was 117.4MB in the beginning and 411.0MB in the end (delta: 293.6MB). Free memory was 57.4MB in the beginning and 266.8MB in the end (delta: -209.4MB). Peak memory consumption was 294.3MB. Max. memory is 16.1GB. * Witness Printer took 55.94ms. Allocated memory is still 411.0MB. Free memory was 266.8MB in the beginning and 262.6MB in the end (delta: 4.2MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 21]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 75]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 47 locations, 4 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: 5.7s, OverallIterations: 11, TraceHistogramMax: 3, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 2.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 192 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 172 mSDsluCounter, 15 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6 mSDsCounter, 28 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 709 IncrementalHoareTripleChecker+Invalid, 737 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 28 mSolverCounterUnsat, 9 mSDtfsCounter, 709 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 276 GetRequests, 239 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=438occurred in iteration=10, InterpolantAutomatonStates: 44, 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, 0.2s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 434 NumberOfCodeBlocks, 422 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 514 ConstructedInterpolants, 0 QuantifiedInterpolants, 1828 SizeOfPredicates, 9 NumberOfNonLiveVariables, 488 ConjunctsInSsa, 49 ConjunctsInUnsatCore, 18 InterpolantComputations, 9 PerfectInterpolantSequences, 124/200 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 - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-07 19:32:19,839 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: TRUE