./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread-deagle/circular_buffer_ok.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 4f9af400 extending candidate: java ['java'] extending candidate: /usr/bin/java ['java', '/usr/bin/java'] extending candidate: /opt/oracle-jdk-bin-*/bin/java ['java', '/usr/bin/java'] extending candidate: /opt/openjdk-*/bin/java ['java', '/usr/bin/java'] extending candidate: /usr/lib/jvm/java-*-openjdk-amd64/bin/java ['java', '/usr/bin/java', '/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java', '/usr/lib/jvm/java-17-openjdk-amd64/bin/java', '/usr/lib/jvm/java-11-openjdk-amd64/bin/java', '/usr/lib/jvm/java-1.17.0-openjdk-amd64/bin/java'] ['/root/.sdkman/candidates/java/21.0.5-tem/bin/java', '-Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config', '-Xmx15G', '-Xms4m', '-jar', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar', '-data', '@noDefault', '-ultimatedata', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data', '-tc', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml', '-i', '../sv-benchmarks/c/pthread-deagle/circular_buffer_ok.i', '-s', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf', '--cacsl2boogietranslator.entry.function', 'main', '--witnessprinter.witness.directory', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux', '--witnessprinter.witness.filename', 'witness', '--witnessprinter.write.witness.besides.input.file', 'false', '--witnessprinter.graph.data.specification', 'CHECK( init(main()), LTL(G valid-free) )\nCHECK( init(main()), LTL(G valid-deref) )\nCHECK( init(main()), LTL(G valid-memtrack) )\n\n', '--witnessprinter.graph.data.producer', 'Automizer', '--witnessprinter.graph.data.architecture', '32bit', '--witnessprinter.graph.data.programhash', '8fcb457b1bed8494a9a3b58e82500f367f4337ac38b5a41a5dad0da896f97e40'] Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/pthread-deagle/circular_buffer_ok.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8fcb457b1bed8494a9a3b58e82500f367f4337ac38b5a41a5dad0da896f97e40 --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-07 19:40:31,266 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-07 19:40:31,347 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-07 19:40:31,353 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-07 19:40:31,355 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-07 19:40:31,380 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-07 19:40:31,383 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-07 19:40:31,383 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-07 19:40:31,383 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-07 19:40:31,383 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-07 19:40:31,383 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-07 19:40:31,383 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-07 19:40:31,384 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-07 19:40:31,384 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-07 19:40:31,384 INFO L153 SettingsManager]: * Use SBE=true [2024-11-07 19:40:31,384 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-07 19:40:31,385 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-07 19:40:31,385 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-07 19:40:31,385 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-07 19:40:31,385 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-07 19:40:31,385 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-07 19:40:31,385 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-07 19:40:31,385 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-07 19:40:31,385 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-07 19:40:31,386 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-07 19:40:31,386 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-07 19:40:31,386 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-07 19:40:31,386 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-07 19:40:31,386 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-07 19:40:31,386 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-07 19:40:31,386 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-07 19:40:31,386 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-07 19:40:31,387 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-07 19:40:31,387 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 19:40:31,387 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-07 19:40:31,387 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-07 19:40:31,387 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-07 19:40:31,387 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-07 19:40:31,387 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-07 19:40:31,387 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-07 19:40:31,388 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-07 19:40:31,388 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-07 19:40:31,388 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 -> 8fcb457b1bed8494a9a3b58e82500f367f4337ac38b5a41a5dad0da896f97e40 [2024-11-07 19:40:31,647 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-07 19:40:31,656 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-07 19:40:31,658 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-07 19:40:31,659 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-07 19:40:31,659 INFO L274 PluginConnector]: CDTParser initialized [2024-11-07 19:40:31,661 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-deagle/circular_buffer_ok.i [2024-11-07 19:40:32,900 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-07 19:40:33,202 INFO L384 CDTParser]: Found 1 translation units. [2024-11-07 19:40:33,203 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-deagle/circular_buffer_ok.i [2024-11-07 19:40:33,222 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/c22cc2b68/04cb3f1b40d44b69abbb3db7d9cddbb0/FLAGdeae767c0 [2024-11-07 19:40:33,452 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/c22cc2b68/04cb3f1b40d44b69abbb3db7d9cddbb0 [2024-11-07 19:40:33,454 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-07 19:40:33,455 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-07 19:40:33,456 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-07 19:40:33,456 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-07 19:40:33,459 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-07 19:40:33,459 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:40:33" (1/1) ... [2024-11-07 19:40:33,459 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@575ba3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:40:33, skipping insertion in model container [2024-11-07 19:40:33,460 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:40:33" (1/1) ... [2024-11-07 19:40:33,483 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-07 19:40:33,732 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 19:40:33,744 INFO L200 MainTranslator]: Completed pre-run [2024-11-07 19:40:33,812 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 19:40:33,856 INFO L204 MainTranslator]: Completed translation [2024-11-07 19:40:33,857 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:40:33 WrapperNode [2024-11-07 19:40:33,858 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-07 19:40:33,859 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-07 19:40:33,859 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-07 19:40:33,859 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-07 19:40:33,865 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:40:33" (1/1) ... [2024-11-07 19:40:33,883 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:40:33" (1/1) ... [2024-11-07 19:40:33,908 INFO L138 Inliner]: procedures = 168, calls = 41, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 151 [2024-11-07 19:40:33,910 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-07 19:40:33,911 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-07 19:40:33,911 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-07 19:40:33,911 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-07 19:40:33,919 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:40:33" (1/1) ... [2024-11-07 19:40:33,919 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:40:33" (1/1) ... [2024-11-07 19:40:33,925 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:40:33" (1/1) ... [2024-11-07 19:40:33,946 INFO L175 MemorySlicer]: Split 23 memory accesses to 4 slices as follows [2, 1, 12, 8]. 52 percent of accesses are in the largest equivalence class. The 21 initializations are split as follows [2, 1, 10, 8]. The 1 writes are split as follows [0, 0, 1, 0]. [2024-11-07 19:40:33,946 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:40:33" (1/1) ... [2024-11-07 19:40:33,946 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:40:33" (1/1) ... [2024-11-07 19:40:33,958 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:40:33" (1/1) ... [2024-11-07 19:40:33,964 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:40:33" (1/1) ... [2024-11-07 19:40:33,966 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:40:33" (1/1) ... [2024-11-07 19:40:33,971 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:40:33" (1/1) ... [2024-11-07 19:40:33,973 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-07 19:40:33,978 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-07 19:40:33,978 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-07 19:40:33,978 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-07 19:40:33,979 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:40:33" (1/1) ... [2024-11-07 19:40:33,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 19:40:34,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:40:34,014 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 19:40:34,017 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 19:40:34,037 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-07 19:40:34,038 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-07 19:40:34,038 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-07 19:40:34,038 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-07 19:40:34,038 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-11-07 19:40:34,038 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-11-07 19:40:34,038 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-11-07 19:40:34,038 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-11-07 19:40:34,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-07 19:40:34,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-07 19:40:34,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-07 19:40:34,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-07 19:40:34,039 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-07 19:40:34,039 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-07 19:40:34,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-07 19:40:34,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-07 19:40:34,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-07 19:40:34,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-07 19:40:34,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-07 19:40:34,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-07 19:40:34,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-07 19:40:34,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-07 19:40:34,040 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-07 19:40:34,040 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-07 19:40:34,040 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-07 19:40:34,042 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 19:40:34,157 INFO L238 CfgBuilder]: Building ICFG [2024-11-07 19:40:34,160 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-07 19:40:34,463 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-07 19:40:34,463 INFO L287 CfgBuilder]: Performing block encoding [2024-11-07 19:40:34,625 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-07 19:40:34,625 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-07 19:40:34,626 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:40:34 BoogieIcfgContainer [2024-11-07 19:40:34,626 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-07 19:40:34,628 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-07 19:40:34,628 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-07 19:40:34,634 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-07 19:40:34,635 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 07:40:33" (1/3) ... [2024-11-07 19:40:34,635 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bfb0a98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:40:34, skipping insertion in model container [2024-11-07 19:40:34,635 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:40:33" (2/3) ... [2024-11-07 19:40:34,635 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bfb0a98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:40:34, skipping insertion in model container [2024-11-07 19:40:34,635 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:40:34" (3/3) ... [2024-11-07 19:40:34,636 INFO L112 eAbstractionObserver]: Analyzing ICFG circular_buffer_ok.i [2024-11-07 19:40:34,648 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-07 19:40:34,648 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-11-07 19:40:34,649 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-07 19:40:34,710 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-07 19:40:34,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 61 places, 66 transitions, 146 flow [2024-11-07 19:40:34,805 INFO L124 PetriNetUnfolderBase]: 12/64 cut-off events. [2024-11-07 19:40:34,808 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-07 19:40:34,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73 conditions, 64 events. 12/64 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 193 event pairs, 0 based on Foata normal form. 0/44 useless extension candidates. Maximal degree in co-relation 59. Up to 2 conditions per place. [2024-11-07 19:40:34,814 INFO L82 GeneralOperation]: Start removeDead. Operand has 61 places, 66 transitions, 146 flow [2024-11-07 19:40:34,817 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 58 places, 63 transitions, 138 flow [2024-11-07 19:40:34,827 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 19:40:34,840 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;@74ea8005, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 19:40:34,840 INFO L334 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2024-11-07 19:40:34,849 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-07 19:40:34,851 INFO L124 PetriNetUnfolderBase]: 1/24 cut-off events. [2024-11-07 19:40:34,851 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-07 19:40:34,851 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:40:34,852 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:40:34,852 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 14 more)] === [2024-11-07 19:40:34,856 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:40:34,856 INFO L85 PathProgramCache]: Analyzing trace with hash -17531593, now seen corresponding path program 1 times [2024-11-07 19:40:34,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:40:34,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486355825] [2024-11-07 19:40:34,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:40:34,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:40:34,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:40:35,185 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 19:40:35,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:40:35,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486355825] [2024-11-07 19:40:35,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486355825] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:40:35,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:40:35,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-07 19:40:35,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622920036] [2024-11-07 19:40:35,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:40:35,196 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 19:40:35,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:40:35,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 19:40:35,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 19:40:35,234 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 66 [2024-11-07 19:40:35,236 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 63 transitions, 138 flow. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:40:35,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:40:35,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 66 [2024-11-07 19:40:35,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:40:35,494 INFO L124 PetriNetUnfolderBase]: 571/1094 cut-off events. [2024-11-07 19:40:35,494 INFO L125 PetriNetUnfolderBase]: For 38/38 co-relation queries the response was YES. [2024-11-07 19:40:35,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2049 conditions, 1094 events. 571/1094 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 6028 event pairs, 437 based on Foata normal form. 154/1136 useless extension candidates. Maximal degree in co-relation 1967. Up to 912 conditions per place. [2024-11-07 19:40:35,508 INFO L140 encePairwiseOnDemand]: 57/66 looper letters, 32 selfloop transitions, 1 changer transitions 0/52 dead transitions. [2024-11-07 19:40:35,508 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 52 transitions, 182 flow [2024-11-07 19:40:35,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 19:40:35,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 19:40:35,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 104 transitions. [2024-11-07 19:40:35,521 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5252525252525253 [2024-11-07 19:40:35,523 INFO L175 Difference]: Start difference. First operand has 58 places, 63 transitions, 138 flow. Second operand 3 states and 104 transitions. [2024-11-07 19:40:35,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 52 transitions, 182 flow [2024-11-07 19:40:35,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 52 transitions, 174 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-07 19:40:35,531 INFO L231 Difference]: Finished difference. Result has 51 places, 52 transitions, 110 flow [2024-11-07 19:40:35,533 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=110, PETRI_PLACES=51, PETRI_TRANSITIONS=52} [2024-11-07 19:40:35,537 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, -7 predicate places. [2024-11-07 19:40:35,537 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 52 transitions, 110 flow [2024-11-07 19:40:35,538 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:40:35,538 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:40:35,538 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:40:35,539 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-07 19:40:35,539 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 14 more)] === [2024-11-07 19:40:35,539 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:40:35,540 INFO L85 PathProgramCache]: Analyzing trace with hash -17531592, now seen corresponding path program 1 times [2024-11-07 19:40:35,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:40:35,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769629681] [2024-11-07 19:40:35,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:40:35,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:40:35,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:40:35,829 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 19:40:35,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:40:35,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769629681] [2024-11-07 19:40:35,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769629681] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:40:35,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:40:35,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-07 19:40:35,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909242798] [2024-11-07 19:40:35,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:40:35,832 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 19:40:35,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:40:35,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 19:40:35,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 19:40:35,852 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 66 [2024-11-07 19:40:35,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 52 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 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 19:40:35,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:40:35,854 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 66 [2024-11-07 19:40:35,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:40:36,139 INFO L124 PetriNetUnfolderBase]: 1024/1958 cut-off events. [2024-11-07 19:40:36,140 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-07 19:40:36,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3583 conditions, 1958 events. 1024/1958 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 11144 event pairs, 370 based on Foata normal form. 0/1779 useless extension candidates. Maximal degree in co-relation 3577. Up to 901 conditions per place. [2024-11-07 19:40:36,153 INFO L140 encePairwiseOnDemand]: 62/66 looper letters, 59 selfloop transitions, 2 changer transitions 0/79 dead transitions. [2024-11-07 19:40:36,154 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 79 transitions, 289 flow [2024-11-07 19:40:36,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 19:40:36,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 19:40:36,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 129 transitions. [2024-11-07 19:40:36,156 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6515151515151515 [2024-11-07 19:40:36,156 INFO L175 Difference]: Start difference. First operand has 51 places, 52 transitions, 110 flow. Second operand 3 states and 129 transitions. [2024-11-07 19:40:36,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 79 transitions, 289 flow [2024-11-07 19:40:36,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 79 transitions, 288 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-07 19:40:36,160 INFO L231 Difference]: Finished difference. Result has 53 places, 53 transitions, 123 flow [2024-11-07 19:40:36,161 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=123, PETRI_PLACES=53, PETRI_TRANSITIONS=53} [2024-11-07 19:40:36,162 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, -5 predicate places. [2024-11-07 19:40:36,162 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 53 transitions, 123 flow [2024-11-07 19:40:36,162 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 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 19:40:36,162 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:40:36,162 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:40:36,163 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-07 19:40:36,163 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 14 more)] === [2024-11-07 19:40:36,164 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:40:36,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1702824681, now seen corresponding path program 1 times [2024-11-07 19:40:36,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:40:36,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492041450] [2024-11-07 19:40:36,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:40:36,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:40:36,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:40:36,424 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 19:40:36,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:40:36,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492041450] [2024-11-07 19:40:36,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492041450] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:40:36,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:40:36,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-07 19:40:36,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650359306] [2024-11-07 19:40:36,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:40:36,426 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 19:40:36,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:40:36,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 19:40:36,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-07 19:40:36,436 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 66 [2024-11-07 19:40:36,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 53 transitions, 123 flow. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 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 19:40:36,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:40:36,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 66 [2024-11-07 19:40:36,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:40:36,637 INFO L124 PetriNetUnfolderBase]: 1068/1989 cut-off events. [2024-11-07 19:40:36,637 INFO L125 PetriNetUnfolderBase]: For 51/53 co-relation queries the response was YES. [2024-11-07 19:40:36,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3818 conditions, 1989 events. 1068/1989 cut-off events. For 51/53 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 11080 event pairs, 822 based on Foata normal form. 0/1808 useless extension candidates. Maximal degree in co-relation 3810. Up to 1678 conditions per place. [2024-11-07 19:40:36,651 INFO L140 encePairwiseOnDemand]: 64/66 looper letters, 34 selfloop transitions, 1 changer transitions 0/50 dead transitions. [2024-11-07 19:40:36,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 50 transitions, 187 flow [2024-11-07 19:40:36,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 19:40:36,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 19:40:36,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 98 transitions. [2024-11-07 19:40:36,654 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.494949494949495 [2024-11-07 19:40:36,654 INFO L175 Difference]: Start difference. First operand has 53 places, 53 transitions, 123 flow. Second operand 3 states and 98 transitions. [2024-11-07 19:40:36,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 50 transitions, 187 flow [2024-11-07 19:40:36,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 50 transitions, 185 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-07 19:40:36,657 INFO L231 Difference]: Finished difference. Result has 51 places, 50 transitions, 117 flow [2024-11-07 19:40:36,657 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=115, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=117, PETRI_PLACES=51, PETRI_TRANSITIONS=50} [2024-11-07 19:40:36,658 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, -7 predicate places. [2024-11-07 19:40:36,658 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 50 transitions, 117 flow [2024-11-07 19:40:36,658 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 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 19:40:36,658 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:40:36,659 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:40:36,659 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-07 19:40:36,659 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 14 more)] === [2024-11-07 19:40:36,659 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:40:36,659 INFO L85 PathProgramCache]: Analyzing trace with hash 1703780011, now seen corresponding path program 1 times [2024-11-07 19:40:36,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:40:36,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539461112] [2024-11-07 19:40:36,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:40:36,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:40:36,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:40:36,787 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 19:40:36,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:40:36,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539461112] [2024-11-07 19:40:36,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539461112] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:40:36,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:40:36,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 19:40:36,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297160391] [2024-11-07 19:40:36,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:40:36,788 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 19:40:36,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:40:36,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 19:40:36,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 19:40:36,798 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 66 [2024-11-07 19:40:36,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 50 transitions, 117 flow. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:40:36,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:40:36,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 66 [2024-11-07 19:40:36,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:40:36,970 INFO L124 PetriNetUnfolderBase]: 739/1428 cut-off events. [2024-11-07 19:40:36,970 INFO L125 PetriNetUnfolderBase]: For 74/74 co-relation queries the response was YES. [2024-11-07 19:40:36,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2692 conditions, 1428 events. 739/1428 cut-off events. For 74/74 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 7489 event pairs, 204 based on Foata normal form. 23/1363 useless extension candidates. Maximal degree in co-relation 2683. Up to 770 conditions per place. [2024-11-07 19:40:36,979 INFO L140 encePairwiseOnDemand]: 63/66 looper letters, 52 selfloop transitions, 2 changer transitions 0/71 dead transitions. [2024-11-07 19:40:36,979 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 71 transitions, 270 flow [2024-11-07 19:40:36,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 19:40:36,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 19:40:36,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 124 transitions. [2024-11-07 19:40:36,981 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6262626262626263 [2024-11-07 19:40:36,981 INFO L175 Difference]: Start difference. First operand has 51 places, 50 transitions, 117 flow. Second operand 3 states and 124 transitions. [2024-11-07 19:40:36,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 71 transitions, 270 flow [2024-11-07 19:40:36,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 71 transitions, 269 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-07 19:40:36,983 INFO L231 Difference]: Finished difference. Result has 53 places, 50 transitions, 124 flow [2024-11-07 19:40:36,983 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=124, PETRI_PLACES=53, PETRI_TRANSITIONS=50} [2024-11-07 19:40:36,983 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, -5 predicate places. [2024-11-07 19:40:36,983 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 50 transitions, 124 flow [2024-11-07 19:40:36,984 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:40:36,984 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:40:36,984 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:40:36,984 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-07 19:40:36,984 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 14 more)] === [2024-11-07 19:40:36,984 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:40:36,984 INFO L85 PathProgramCache]: Analyzing trace with hash 329932780, now seen corresponding path program 1 times [2024-11-07 19:40:36,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:40:36,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905783528] [2024-11-07 19:40:36,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:40:36,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:40:36,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:40:37,024 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 19:40:37,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:40:37,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905783528] [2024-11-07 19:40:37,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905783528] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:40:37,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:40:37,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 19:40:37,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814155626] [2024-11-07 19:40:37,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:40:37,025 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 19:40:37,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:40:37,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 19:40:37,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 19:40:37,029 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 66 [2024-11-07 19:40:37,029 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 50 transitions, 124 flow. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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 19:40:37,030 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:40:37,030 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 66 [2024-11-07 19:40:37,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:40:37,261 INFO L124 PetriNetUnfolderBase]: 1181/2256 cut-off events. [2024-11-07 19:40:37,261 INFO L125 PetriNetUnfolderBase]: For 224/242 co-relation queries the response was YES. [2024-11-07 19:40:37,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4406 conditions, 2256 events. 1181/2256 cut-off events. For 224/242 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 13592 event pairs, 565 based on Foata normal form. 24/2104 useless extension candidates. Maximal degree in co-relation 4395. Up to 1235 conditions per place. [2024-11-07 19:40:37,274 INFO L140 encePairwiseOnDemand]: 63/66 looper letters, 56 selfloop transitions, 2 changer transitions 0/75 dead transitions. [2024-11-07 19:40:37,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 75 transitions, 298 flow [2024-11-07 19:40:37,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 19:40:37,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 19:40:37,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 127 transitions. [2024-11-07 19:40:37,277 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6414141414141414 [2024-11-07 19:40:37,277 INFO L175 Difference]: Start difference. First operand has 53 places, 50 transitions, 124 flow. Second operand 3 states and 127 transitions. [2024-11-07 19:40:37,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 75 transitions, 298 flow [2024-11-07 19:40:37,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 75 transitions, 292 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-07 19:40:37,281 INFO L231 Difference]: Finished difference. Result has 54 places, 51 transitions, 132 flow [2024-11-07 19:40:37,281 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=132, PETRI_PLACES=54, PETRI_TRANSITIONS=51} [2024-11-07 19:40:37,282 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, -4 predicate places. [2024-11-07 19:40:37,282 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 51 transitions, 132 flow [2024-11-07 19:40:37,282 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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 19:40:37,282 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:40:37,282 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:40:37,282 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-07 19:40:37,284 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 14 more)] === [2024-11-07 19:40:37,285 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:40:37,285 INFO L85 PathProgramCache]: Analyzing trace with hash -529581639, now seen corresponding path program 1 times [2024-11-07 19:40:37,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:40:37,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966132270] [2024-11-07 19:40:37,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:40:37,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:40:37,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:40:37,358 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 19:40:37,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:40:37,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966132270] [2024-11-07 19:40:37,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966132270] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:40:37,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:40:37,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 19:40:37,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293649252] [2024-11-07 19:40:37,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:40:37,359 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 19:40:37,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:40:37,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 19:40:37,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 19:40:37,362 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 66 [2024-11-07 19:40:37,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 51 transitions, 132 flow. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:40:37,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:40:37,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 66 [2024-11-07 19:40:37,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:40:37,580 INFO L124 PetriNetUnfolderBase]: 1071/2133 cut-off events. [2024-11-07 19:40:37,581 INFO L125 PetriNetUnfolderBase]: For 202/218 co-relation queries the response was YES. [2024-11-07 19:40:37,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4230 conditions, 2133 events. 1071/2133 cut-off events. For 202/218 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 12150 event pairs, 502 based on Foata normal form. 47/2072 useless extension candidates. Maximal degree in co-relation 4219. Up to 903 conditions per place. [2024-11-07 19:40:37,591 INFO L140 encePairwiseOnDemand]: 62/66 looper letters, 53 selfloop transitions, 3 changer transitions 0/73 dead transitions. [2024-11-07 19:40:37,591 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 73 transitions, 302 flow [2024-11-07 19:40:37,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 19:40:37,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 19:40:37,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 123 transitions. [2024-11-07 19:40:37,592 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6212121212121212 [2024-11-07 19:40:37,592 INFO L175 Difference]: Start difference. First operand has 54 places, 51 transitions, 132 flow. Second operand 3 states and 123 transitions. [2024-11-07 19:40:37,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 73 transitions, 302 flow [2024-11-07 19:40:37,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 73 transitions, 299 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-07 19:40:37,595 INFO L231 Difference]: Finished difference. Result has 56 places, 52 transitions, 145 flow [2024-11-07 19:40:37,595 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=145, PETRI_PLACES=56, PETRI_TRANSITIONS=52} [2024-11-07 19:40:37,597 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, -2 predicate places. [2024-11-07 19:40:37,597 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 52 transitions, 145 flow [2024-11-07 19:40:37,597 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:40:37,597 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:40:37,597 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:40:37,598 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-07 19:40:37,598 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t1Err3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 14 more)] === [2024-11-07 19:40:37,598 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:40:37,598 INFO L85 PathProgramCache]: Analyzing trace with hash 960948998, now seen corresponding path program 1 times [2024-11-07 19:40:37,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:40:37,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031497547] [2024-11-07 19:40:37,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:40:37,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:40:37,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:40:37,750 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 19:40:37,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:40:37,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031497547] [2024-11-07 19:40:37,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031497547] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:40:37,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:40:37,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-07 19:40:37,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227300014] [2024-11-07 19:40:37,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:40:37,751 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-07 19:40:37,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:40:37,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-07 19:40:37,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-07 19:40:37,760 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 66 [2024-11-07 19:40:37,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 52 transitions, 145 flow. Second operand has 6 states, 6 states have (on average 23.5) internal successors, (141), 6 states have internal predecessors, (141), 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 19:40:37,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:40:37,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 66 [2024-11-07 19:40:37,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:40:38,126 INFO L124 PetriNetUnfolderBase]: 1069/2029 cut-off events. [2024-11-07 19:40:38,127 INFO L125 PetriNetUnfolderBase]: For 304/317 co-relation queries the response was YES. [2024-11-07 19:40:38,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4226 conditions, 2029 events. 1069/2029 cut-off events. For 304/317 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 11243 event pairs, 470 based on Foata normal form. 0/1881 useless extension candidates. Maximal degree in co-relation 4213. Up to 1334 conditions per place. [2024-11-07 19:40:38,139 INFO L140 encePairwiseOnDemand]: 59/66 looper letters, 87 selfloop transitions, 7 changer transitions 0/110 dead transitions. [2024-11-07 19:40:38,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 110 transitions, 469 flow [2024-11-07 19:40:38,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-07 19:40:38,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-07 19:40:38,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 247 transitions. [2024-11-07 19:40:38,142 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5346320346320347 [2024-11-07 19:40:38,143 INFO L175 Difference]: Start difference. First operand has 56 places, 52 transitions, 145 flow. Second operand 7 states and 247 transitions. [2024-11-07 19:40:38,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 110 transitions, 469 flow [2024-11-07 19:40:38,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 110 transitions, 464 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-07 19:40:38,147 INFO L231 Difference]: Finished difference. Result has 65 places, 57 transitions, 187 flow [2024-11-07 19:40:38,147 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=187, PETRI_PLACES=65, PETRI_TRANSITIONS=57} [2024-11-07 19:40:38,148 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 7 predicate places. [2024-11-07 19:40:38,150 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 57 transitions, 187 flow [2024-11-07 19:40:38,150 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.5) internal successors, (141), 6 states have internal predecessors, (141), 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 19:40:38,150 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:40:38,150 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:40:38,150 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-07 19:40:38,150 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 14 more)] === [2024-11-07 19:40:38,151 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:40:38,151 INFO L85 PathProgramCache]: Analyzing trace with hash 301022442, now seen corresponding path program 1 times [2024-11-07 19:40:38,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:40:38,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285845255] [2024-11-07 19:40:38,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:40:38,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:40:38,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:40:38,198 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 19:40:38,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:40:38,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285845255] [2024-11-07 19:40:38,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285845255] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:40:38,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:40:38,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 19:40:38,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618879240] [2024-11-07 19:40:38,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:40:38,199 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 19:40:38,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:40:38,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 19:40:38,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 19:40:38,203 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 66 [2024-11-07 19:40:38,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 57 transitions, 187 flow. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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 19:40:38,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:40:38,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 66 [2024-11-07 19:40:38,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:40:38,529 INFO L124 PetriNetUnfolderBase]: 1714/3375 cut-off events. [2024-11-07 19:40:38,529 INFO L125 PetriNetUnfolderBase]: For 899/942 co-relation queries the response was YES. [2024-11-07 19:40:38,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7374 conditions, 3375 events. 1714/3375 cut-off events. For 899/942 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 21388 event pairs, 797 based on Foata normal form. 75/3295 useless extension candidates. Maximal degree in co-relation 7357. Up to 1698 conditions per place. [2024-11-07 19:40:38,554 INFO L140 encePairwiseOnDemand]: 63/66 looper letters, 69 selfloop transitions, 2 changer transitions 0/89 dead transitions. [2024-11-07 19:40:38,556 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 89 transitions, 448 flow [2024-11-07 19:40:38,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 19:40:38,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 19:40:38,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 127 transitions. [2024-11-07 19:40:38,557 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6414141414141414 [2024-11-07 19:40:38,557 INFO L175 Difference]: Start difference. First operand has 65 places, 57 transitions, 187 flow. Second operand 3 states and 127 transitions. [2024-11-07 19:40:38,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 89 transitions, 448 flow [2024-11-07 19:40:38,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 89 transitions, 436 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-07 19:40:38,566 INFO L231 Difference]: Finished difference. Result has 66 places, 58 transitions, 193 flow [2024-11-07 19:40:38,568 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=193, PETRI_PLACES=66, PETRI_TRANSITIONS=58} [2024-11-07 19:40:38,569 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 8 predicate places. [2024-11-07 19:40:38,569 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 58 transitions, 193 flow [2024-11-07 19:40:38,569 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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 19:40:38,569 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:40:38,569 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:40:38,569 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-07 19:40:38,569 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 14 more)] === [2024-11-07 19:40:38,570 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:40:38,570 INFO L85 PathProgramCache]: Analyzing trace with hash 1172466476, now seen corresponding path program 1 times [2024-11-07 19:40:38,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:40:38,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879222958] [2024-11-07 19:40:38,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:40:38,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:40:38,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:40:38,640 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:40:38,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:40:38,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879222958] [2024-11-07 19:40:38,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879222958] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:40:38,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:40:38,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 19:40:38,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508576402] [2024-11-07 19:40:38,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:40:38,641 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 19:40:38,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:40:38,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 19:40:38,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 19:40:38,644 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 66 [2024-11-07 19:40:38,644 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 58 transitions, 193 flow. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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 19:40:38,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:40:38,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 66 [2024-11-07 19:40:38,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:40:38,907 INFO L124 PetriNetUnfolderBase]: 1328/2565 cut-off events. [2024-11-07 19:40:38,908 INFO L125 PetriNetUnfolderBase]: For 734/753 co-relation queries the response was YES. [2024-11-07 19:40:38,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5803 conditions, 2565 events. 1328/2565 cut-off events. For 734/753 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 14608 event pairs, 487 based on Foata normal form. 91/2601 useless extension candidates. Maximal degree in co-relation 5785. Up to 1421 conditions per place. [2024-11-07 19:40:38,924 INFO L140 encePairwiseOnDemand]: 62/66 looper letters, 54 selfloop transitions, 3 changer transitions 0/74 dead transitions. [2024-11-07 19:40:38,924 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 74 transitions, 356 flow [2024-11-07 19:40:38,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 19:40:38,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 19:40:38,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 115 transitions. [2024-11-07 19:40:38,926 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5808080808080808 [2024-11-07 19:40:38,926 INFO L175 Difference]: Start difference. First operand has 66 places, 58 transitions, 193 flow. Second operand 3 states and 115 transitions. [2024-11-07 19:40:38,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 74 transitions, 356 flow [2024-11-07 19:40:38,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 74 transitions, 347 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-07 19:40:38,934 INFO L231 Difference]: Finished difference. Result has 68 places, 58 transitions, 200 flow [2024-11-07 19:40:38,934 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=200, PETRI_PLACES=68, PETRI_TRANSITIONS=58} [2024-11-07 19:40:38,935 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 10 predicate places. [2024-11-07 19:40:38,936 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 58 transitions, 200 flow [2024-11-07 19:40:38,936 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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 19:40:38,936 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:40:38,936 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:40:38,936 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-07 19:40:38,936 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 14 more)] === [2024-11-07 19:40:38,937 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:40:38,937 INFO L85 PathProgramCache]: Analyzing trace with hash 1637209546, now seen corresponding path program 1 times [2024-11-07 19:40:38,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:40:38,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233128593] [2024-11-07 19:40:38,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:40:38,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:40:38,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:40:39,070 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 19:40:39,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:40:39,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233128593] [2024-11-07 19:40:39,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233128593] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:40:39,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:40:39,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 19:40:39,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783894636] [2024-11-07 19:40:39,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:40:39,073 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 19:40:39,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:40:39,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 19:40:39,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 19:40:39,074 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 66 [2024-11-07 19:40:39,074 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 58 transitions, 200 flow. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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 19:40:39,074 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:40:39,074 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 66 [2024-11-07 19:40:39,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:40:39,280 INFO L124 PetriNetUnfolderBase]: 804/1812 cut-off events. [2024-11-07 19:40:39,280 INFO L125 PetriNetUnfolderBase]: For 678/678 co-relation queries the response was YES. [2024-11-07 19:40:39,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4147 conditions, 1812 events. 804/1812 cut-off events. For 678/678 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 9897 event pairs, 255 based on Foata normal form. 92/1855 useless extension candidates. Maximal degree in co-relation 4129. Up to 821 conditions per place. [2024-11-07 19:40:39,289 INFO L140 encePairwiseOnDemand]: 62/66 looper letters, 48 selfloop transitions, 4 changer transitions 0/71 dead transitions. [2024-11-07 19:40:39,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 71 transitions, 352 flow [2024-11-07 19:40:39,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 19:40:39,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 19:40:39,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 113 transitions. [2024-11-07 19:40:39,290 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5707070707070707 [2024-11-07 19:40:39,290 INFO L175 Difference]: Start difference. First operand has 68 places, 58 transitions, 200 flow. Second operand 3 states and 113 transitions. [2024-11-07 19:40:39,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 71 transitions, 352 flow [2024-11-07 19:40:39,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 71 transitions, 346 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-07 19:40:39,294 INFO L231 Difference]: Finished difference. Result has 68 places, 58 transitions, 202 flow [2024-11-07 19:40:39,295 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=202, PETRI_PLACES=68, PETRI_TRANSITIONS=58} [2024-11-07 19:40:39,295 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 10 predicate places. [2024-11-07 19:40:39,295 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 58 transitions, 202 flow [2024-11-07 19:40:39,295 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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 19:40:39,295 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:40:39,296 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:40:39,296 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-07 19:40:39,296 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 14 more)] === [2024-11-07 19:40:39,296 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:40:39,296 INFO L85 PathProgramCache]: Analyzing trace with hash -956769914, now seen corresponding path program 1 times [2024-11-07 19:40:39,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:40:39,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132538483] [2024-11-07 19:40:39,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:40:39,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:40:39,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:40:39,519 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 19:40:39,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:40:39,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132538483] [2024-11-07 19:40:39,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132538483] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:40:39,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:40:39,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 19:40:39,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131809046] [2024-11-07 19:40:39,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:40:39,521 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 19:40:39,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:40:39,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 19:40:39,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 19:40:39,534 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 66 [2024-11-07 19:40:39,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 58 transitions, 202 flow. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 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 19:40:39,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:40:39,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 66 [2024-11-07 19:40:39,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:40:39,848 INFO L124 PetriNetUnfolderBase]: 1473/3155 cut-off events. [2024-11-07 19:40:39,848 INFO L125 PetriNetUnfolderBase]: For 1353/1358 co-relation queries the response was YES. [2024-11-07 19:40:39,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7579 conditions, 3155 events. 1473/3155 cut-off events. For 1353/1358 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 17799 event pairs, 766 based on Foata normal form. 3/3018 useless extension candidates. Maximal degree in co-relation 7561. Up to 1308 conditions per place. [2024-11-07 19:40:39,862 INFO L140 encePairwiseOnDemand]: 63/66 looper letters, 90 selfloop transitions, 3 changer transitions 0/111 dead transitions. [2024-11-07 19:40:39,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 111 transitions, 578 flow [2024-11-07 19:40:39,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 19:40:39,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 19:40:39,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 173 transitions. [2024-11-07 19:40:39,864 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6553030303030303 [2024-11-07 19:40:39,864 INFO L175 Difference]: Start difference. First operand has 68 places, 58 transitions, 202 flow. Second operand 4 states and 173 transitions. [2024-11-07 19:40:39,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 111 transitions, 578 flow [2024-11-07 19:40:39,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 111 transitions, 566 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-07 19:40:39,870 INFO L231 Difference]: Finished difference. Result has 71 places, 60 transitions, 214 flow [2024-11-07 19:40:39,870 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=214, PETRI_PLACES=71, PETRI_TRANSITIONS=60} [2024-11-07 19:40:39,870 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 13 predicate places. [2024-11-07 19:40:39,871 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 60 transitions, 214 flow [2024-11-07 19:40:39,871 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 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 19:40:39,871 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:40:39,871 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:40:39,871 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-07 19:40:39,871 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 14 more)] === [2024-11-07 19:40:39,871 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:40:39,872 INFO L85 PathProgramCache]: Analyzing trace with hash -805603092, now seen corresponding path program 1 times [2024-11-07 19:40:39,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:40:39,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745335983] [2024-11-07 19:40:39,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:40:39,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:40:39,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:40:39,934 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:40:39,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:40:39,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745335983] [2024-11-07 19:40:39,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745335983] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 19:40:39,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1801651728] [2024-11-07 19:40:39,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:40:39,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:40:39,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:40:39,937 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 19:40:39,939 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 19:40:40,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:40:40,052 INFO L255 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-07 19:40:40,055 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:40:40,101 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 19:40:40,101 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-07 19:40:40,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1801651728] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:40:40,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-07 19:40:40,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2024-11-07 19:40:40,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397628762] [2024-11-07 19:40:40,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:40:40,102 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 19:40:40,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:40:40,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 19:40:40,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-07 19:40:40,108 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 66 [2024-11-07 19:40:40,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 60 transitions, 214 flow. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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 19:40:40,108 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:40:40,108 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 66 [2024-11-07 19:40:40,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:40:40,347 INFO L124 PetriNetUnfolderBase]: 1461/3120 cut-off events. [2024-11-07 19:40:40,347 INFO L125 PetriNetUnfolderBase]: For 1223/1232 co-relation queries the response was YES. [2024-11-07 19:40:40,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7366 conditions, 3120 events. 1461/3120 cut-off events. For 1223/1232 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 17943 event pairs, 1152 based on Foata normal form. 13/3026 useless extension candidates. Maximal degree in co-relation 7345. Up to 2476 conditions per place. [2024-11-07 19:40:40,361 INFO L140 encePairwiseOnDemand]: 64/66 looper letters, 38 selfloop transitions, 1 changer transitions 3/59 dead transitions. [2024-11-07 19:40:40,361 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 59 transitions, 294 flow [2024-11-07 19:40:40,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 19:40:40,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 19:40:40,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 99 transitions. [2024-11-07 19:40:40,363 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-07 19:40:40,363 INFO L175 Difference]: Start difference. First operand has 71 places, 60 transitions, 214 flow. Second operand 3 states and 99 transitions. [2024-11-07 19:40:40,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 59 transitions, 294 flow [2024-11-07 19:40:40,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 59 transitions, 294 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-07 19:40:40,367 INFO L231 Difference]: Finished difference. Result has 72 places, 56 transitions, 204 flow [2024-11-07 19:40:40,367 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=204, PETRI_PLACES=72, PETRI_TRANSITIONS=56} [2024-11-07 19:40:40,368 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 14 predicate places. [2024-11-07 19:40:40,369 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 56 transitions, 204 flow [2024-11-07 19:40:40,369 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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 19:40:40,369 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:40:40,369 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:40:40,387 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 19:40:40,573 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-07 19:40:40,574 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 14 more)] === [2024-11-07 19:40:40,574 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:40:40,574 INFO L85 PathProgramCache]: Analyzing trace with hash 1359728003, now seen corresponding path program 1 times [2024-11-07 19:40:40,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:40:40,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793758344] [2024-11-07 19:40:40,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:40:40,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:40:40,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-07 19:40:40,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [283788364] [2024-11-07 19:40:40,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:40:40,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:40:40,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:40:40,618 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 19:40:40,620 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 19:40:40,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:40:40,741 INFO L255 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-07 19:40:40,743 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:40:40,927 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 19:40:40,927 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-07 19:40:40,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:40:40,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793758344] [2024-11-07 19:40:40,929 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-07 19:40:40,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [283788364] [2024-11-07 19:40:40,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [283788364] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:40:40,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:40:40,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 19:40:40,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683166677] [2024-11-07 19:40:40,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:40:40,930 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 19:40:40,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:40:40,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 19:40:40,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 19:40:40,944 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 66 [2024-11-07 19:40:40,945 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 56 transitions, 204 flow. Second operand has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 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 19:40:40,945 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:40:40,945 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 66 [2024-11-07 19:40:40,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:40:41,168 INFO L124 PetriNetUnfolderBase]: 1014/2199 cut-off events. [2024-11-07 19:40:41,169 INFO L125 PetriNetUnfolderBase]: For 891/893 co-relation queries the response was YES. [2024-11-07 19:40:41,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5206 conditions, 2199 events. 1014/2199 cut-off events. For 891/893 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 10823 event pairs, 315 based on Foata normal form. 18/2158 useless extension candidates. Maximal degree in co-relation 5183. Up to 1159 conditions per place. [2024-11-07 19:40:41,179 INFO L140 encePairwiseOnDemand]: 62/66 looper letters, 58 selfloop transitions, 3 changer transitions 3/81 dead transitions. [2024-11-07 19:40:41,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 81 transitions, 417 flow [2024-11-07 19:40:41,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 19:40:41,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 19:40:41,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 151 transitions. [2024-11-07 19:40:41,180 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.571969696969697 [2024-11-07 19:40:41,180 INFO L175 Difference]: Start difference. First operand has 72 places, 56 transitions, 204 flow. Second operand 4 states and 151 transitions. [2024-11-07 19:40:41,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 81 transitions, 417 flow [2024-11-07 19:40:41,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 81 transitions, 416 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-07 19:40:41,183 INFO L231 Difference]: Finished difference. Result has 73 places, 56 transitions, 213 flow [2024-11-07 19:40:41,184 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=203, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=213, PETRI_PLACES=73, PETRI_TRANSITIONS=56} [2024-11-07 19:40:41,184 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 15 predicate places. [2024-11-07 19:40:41,184 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 56 transitions, 213 flow [2024-11-07 19:40:41,184 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 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 19:40:41,185 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:40:41,185 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:40:41,203 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 19:40:41,388 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:40:41,389 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 14 more)] === [2024-11-07 19:40:41,389 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:40:41,390 INFO L85 PathProgramCache]: Analyzing trace with hash -504612373, now seen corresponding path program 1 times [2024-11-07 19:40:41,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:40:41,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684624647] [2024-11-07 19:40:41,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:40:41,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:40:41,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:40:42,144 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 19:40:42,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:40:42,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684624647] [2024-11-07 19:40:42,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684624647] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:40:42,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:40:42,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-07 19:40:42,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869185847] [2024-11-07 19:40:42,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:40:42,146 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-07 19:40:42,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:40:42,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-07 19:40:42,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-11-07 19:40:42,425 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 66 [2024-11-07 19:40:42,426 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 56 transitions, 213 flow. Second operand has 11 states, 11 states have (on average 24.818181818181817) internal successors, (273), 11 states have internal predecessors, (273), 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 19:40:42,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:40:42,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 66 [2024-11-07 19:40:42,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:40:43,347 INFO L124 PetriNetUnfolderBase]: 1202/2580 cut-off events. [2024-11-07 19:40:43,347 INFO L125 PetriNetUnfolderBase]: For 1192/1196 co-relation queries the response was YES. [2024-11-07 19:40:43,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6228 conditions, 2580 events. 1202/2580 cut-off events. For 1192/1196 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 13454 event pairs, 384 based on Foata normal form. 0/2506 useless extension candidates. Maximal degree in co-relation 6203. Up to 895 conditions per place. [2024-11-07 19:40:43,357 INFO L140 encePairwiseOnDemand]: 54/66 looper letters, 108 selfloop transitions, 15 changer transitions 14/154 dead transitions. [2024-11-07 19:40:43,357 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 154 transitions, 829 flow [2024-11-07 19:40:43,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-07 19:40:43,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-07 19:40:43,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 401 transitions. [2024-11-07 19:40:43,360 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5063131313131313 [2024-11-07 19:40:43,360 INFO L175 Difference]: Start difference. First operand has 73 places, 56 transitions, 213 flow. Second operand 12 states and 401 transitions. [2024-11-07 19:40:43,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 154 transitions, 829 flow [2024-11-07 19:40:43,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 154 transitions, 821 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-07 19:40:43,365 INFO L231 Difference]: Finished difference. Result has 85 places, 65 transitions, 299 flow [2024-11-07 19:40:43,365 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=299, PETRI_PLACES=85, PETRI_TRANSITIONS=65} [2024-11-07 19:40:43,366 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 27 predicate places. [2024-11-07 19:40:43,367 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 65 transitions, 299 flow [2024-11-07 19:40:43,367 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 24.818181818181817) internal successors, (273), 11 states have internal predecessors, (273), 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 19:40:43,367 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:40:43,367 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:40:43,368 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-07 19:40:43,368 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 14 more)] === [2024-11-07 19:40:43,369 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:40:43,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1189847007, now seen corresponding path program 1 times [2024-11-07 19:40:43,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:40:43,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3704483] [2024-11-07 19:40:43,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:40:43,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:40:43,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:40:43,708 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:40:43,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:40:43,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3704483] [2024-11-07 19:40:43,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3704483] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 19:40:43,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [223239090] [2024-11-07 19:40:43,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:40:43,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:40:43,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:40:43,711 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 19:40:43,713 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 19:40:43,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:40:43,841 INFO L255 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-07 19:40:43,842 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:40:44,202 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:40:44,203 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 19:40:45,145 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:40:45,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [223239090] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 19:40:45,146 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 19:40:45,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 10 [2024-11-07 19:40:45,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034491355] [2024-11-07 19:40:45,146 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 19:40:45,146 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-07 19:40:45,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:40:45,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-07 19:40:45,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-11-07 19:40:45,232 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 66 [2024-11-07 19:40:45,234 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 65 transitions, 299 flow. Second operand has 12 states, 12 states have (on average 27.0) internal successors, (324), 12 states have internal predecessors, (324), 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 19:40:45,234 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:40:45,234 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 66 [2024-11-07 19:40:45,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:40:45,646 INFO L124 PetriNetUnfolderBase]: 1368/2899 cut-off events. [2024-11-07 19:40:45,647 INFO L125 PetriNetUnfolderBase]: For 1658/1660 co-relation queries the response was YES. [2024-11-07 19:40:45,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7333 conditions, 2899 events. 1368/2899 cut-off events. For 1658/1660 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 14224 event pairs, 842 based on Foata normal form. 54/2873 useless extension candidates. Maximal degree in co-relation 7305. Up to 1611 conditions per place. [2024-11-07 19:40:45,662 INFO L140 encePairwiseOnDemand]: 61/66 looper letters, 59 selfloop transitions, 7 changer transitions 0/80 dead transitions. [2024-11-07 19:40:45,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 80 transitions, 483 flow [2024-11-07 19:40:45,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 19:40:45,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 19:40:45,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 133 transitions. [2024-11-07 19:40:45,663 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5037878787878788 [2024-11-07 19:40:45,664 INFO L175 Difference]: Start difference. First operand has 85 places, 65 transitions, 299 flow. Second operand 4 states and 133 transitions. [2024-11-07 19:40:45,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 80 transitions, 483 flow [2024-11-07 19:40:45,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 80 transitions, 473 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-11-07 19:40:45,669 INFO L231 Difference]: Finished difference. Result has 84 places, 63 transitions, 301 flow [2024-11-07 19:40:45,669 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=273, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=301, PETRI_PLACES=84, PETRI_TRANSITIONS=63} [2024-11-07 19:40:45,670 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 26 predicate places. [2024-11-07 19:40:45,670 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 63 transitions, 301 flow [2024-11-07 19:40:45,670 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 27.0) internal successors, (324), 12 states have internal predecessors, (324), 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 19:40:45,670 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:40:45,671 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:40:45,688 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-07 19:40:45,871 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:40:45,871 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 14 more)] === [2024-11-07 19:40:45,872 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:40:45,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1361029099, now seen corresponding path program 1 times [2024-11-07 19:40:45,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:40:45,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214268938] [2024-11-07 19:40:45,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:40:45,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:40:45,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:40:45,982 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-07 19:40:45,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:40:45,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214268938] [2024-11-07 19:40:45,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214268938] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:40:45,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:40:45,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-07 19:40:45,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764129233] [2024-11-07 19:40:45,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:40:45,984 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 19:40:45,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:40:45,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 19:40:45,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-07 19:40:45,991 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 66 [2024-11-07 19:40:45,992 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 63 transitions, 301 flow. Second operand has 5 states, 5 states have (on average 27.6) internal successors, (138), 5 states have internal predecessors, (138), 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 19:40:45,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:40:45,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 66 [2024-11-07 19:40:45,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:40:46,310 INFO L124 PetriNetUnfolderBase]: 1428/2962 cut-off events. [2024-11-07 19:40:46,310 INFO L125 PetriNetUnfolderBase]: For 1975/1975 co-relation queries the response was YES. [2024-11-07 19:40:46,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7624 conditions, 2962 events. 1428/2962 cut-off events. For 1975/1975 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 14419 event pairs, 714 based on Foata normal form. 0/2882 useless extension candidates. Maximal degree in co-relation 7595. Up to 1757 conditions per place. [2024-11-07 19:40:46,323 INFO L140 encePairwiseOnDemand]: 60/66 looper letters, 76 selfloop transitions, 11 changer transitions 5/104 dead transitions. [2024-11-07 19:40:46,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 104 transitions, 644 flow [2024-11-07 19:40:46,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-07 19:40:46,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-07 19:40:46,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 199 transitions. [2024-11-07 19:40:46,325 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5025252525252525 [2024-11-07 19:40:46,325 INFO L175 Difference]: Start difference. First operand has 84 places, 63 transitions, 301 flow. Second operand 6 states and 199 transitions. [2024-11-07 19:40:46,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 104 transitions, 644 flow [2024-11-07 19:40:46,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 104 transitions, 632 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-07 19:40:46,332 INFO L231 Difference]: Finished difference. Result has 85 places, 60 transitions, 312 flow [2024-11-07 19:40:46,332 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=283, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=312, PETRI_PLACES=85, PETRI_TRANSITIONS=60} [2024-11-07 19:40:46,333 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 27 predicate places. [2024-11-07 19:40:46,334 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 60 transitions, 312 flow [2024-11-07 19:40:46,334 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.6) internal successors, (138), 5 states have internal predecessors, (138), 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 19:40:46,334 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:40:46,334 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:40:46,334 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-07 19:40:46,334 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 14 more)] === [2024-11-07 19:40:46,335 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:40:46,335 INFO L85 PathProgramCache]: Analyzing trace with hash -2079303288, now seen corresponding path program 1 times [2024-11-07 19:40:46,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:40:46,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979442987] [2024-11-07 19:40:46,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:40:46,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:40:46,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:40:46,625 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:40:46,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:40:46,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979442987] [2024-11-07 19:40:46,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979442987] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 19:40:46,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [223538215] [2024-11-07 19:40:46,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:40:46,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:40:46,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:40:46,629 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 19:40:46,631 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 19:40:46,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:40:46,795 INFO L255 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-07 19:40:46,798 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:40:47,137 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:40:47,138 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 19:40:48,119 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:40:48,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [223538215] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 19:40:48,120 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 19:40:48,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2024-11-07 19:40:48,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701945756] [2024-11-07 19:40:48,120 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 19:40:48,122 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-07 19:40:48,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:40:48,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-07 19:40:48,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-11-07 19:40:48,185 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 66 [2024-11-07 19:40:48,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 60 transitions, 312 flow. Second operand has 11 states, 11 states have (on average 31.272727272727273) internal successors, (344), 11 states have internal predecessors, (344), 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 19:40:48,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:40:48,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 66 [2024-11-07 19:40:48,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:40:53,318 INFO L124 PetriNetUnfolderBase]: 2271/5005 cut-off events. [2024-11-07 19:40:53,318 INFO L125 PetriNetUnfolderBase]: For 3833/3834 co-relation queries the response was YES. [2024-11-07 19:40:53,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13036 conditions, 5005 events. 2271/5005 cut-off events. For 3833/3834 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 24072 event pairs, 752 based on Foata normal form. 37/4932 useless extension candidates. Maximal degree in co-relation 13007. Up to 863 conditions per place. [2024-11-07 19:40:53,345 INFO L140 encePairwiseOnDemand]: 62/66 looper letters, 146 selfloop transitions, 9 changer transitions 2/170 dead transitions. [2024-11-07 19:40:53,345 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 170 transitions, 1135 flow [2024-11-07 19:40:53,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-07 19:40:53,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-07 19:40:53,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 318 transitions. [2024-11-07 19:40:53,347 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6022727272727273 [2024-11-07 19:40:53,347 INFO L175 Difference]: Start difference. First operand has 85 places, 60 transitions, 312 flow. Second operand 8 states and 318 transitions. [2024-11-07 19:40:53,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 170 transitions, 1135 flow [2024-11-07 19:40:53,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 170 transitions, 1093 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-07 19:40:53,357 INFO L231 Difference]: Finished difference. Result has 92 places, 64 transitions, 357 flow [2024-11-07 19:40:53,357 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=295, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=357, PETRI_PLACES=92, PETRI_TRANSITIONS=64} [2024-11-07 19:40:53,358 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 34 predicate places. [2024-11-07 19:40:53,358 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 64 transitions, 357 flow [2024-11-07 19:40:53,358 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 31.272727272727273) internal successors, (344), 11 states have internal predecessors, (344), 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 19:40:53,358 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:40:53,358 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:40:53,375 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 19:40:53,562 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,SelfDestructingSolverStorable16 [2024-11-07 19:40:53,563 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 14 more)] === [2024-11-07 19:40:53,563 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:40:53,563 INFO L85 PathProgramCache]: Analyzing trace with hash -583328023, now seen corresponding path program 1 times [2024-11-07 19:40:53,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:40:53,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042233740] [2024-11-07 19:40:53,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:40:53,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:40:53,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-07 19:40:53,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2062995735] [2024-11-07 19:40:53,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:40:53,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:40:53,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:40:53,612 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 19:40:53,614 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-07 19:40:53,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:40:53,806 INFO L255 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-07 19:40:53,808 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:40:54,094 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 2 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:40:54,094 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 19:40:55,317 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 2 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:40:55,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:40:55,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042233740] [2024-11-07 19:40:55,318 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-07 19:40:55,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2062995735] [2024-11-07 19:40:55,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2062995735] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 19:40:55,318 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-07 19:40:55,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2024-11-07 19:40:55,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580326807] [2024-11-07 19:40:55,318 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-07 19:40:55,319 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-07 19:40:55,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:40:55,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-07 19:40:55,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2024-11-07 19:40:55,604 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 66 [2024-11-07 19:40:55,604 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 64 transitions, 357 flow. Second operand has 11 states, 11 states have (on average 27.90909090909091) internal successors, (307), 11 states have internal predecessors, (307), 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 19:40:55,604 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:40:55,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 66 [2024-11-07 19:40:55,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:40:57,398 INFO L124 PetriNetUnfolderBase]: 1895/4089 cut-off events. [2024-11-07 19:40:57,399 INFO L125 PetriNetUnfolderBase]: For 3282/3282 co-relation queries the response was YES. [2024-11-07 19:40:57,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10725 conditions, 4089 events. 1895/4089 cut-off events. For 3282/3282 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 17755 event pairs, 459 based on Foata normal form. 27/4041 useless extension candidates. Maximal degree in co-relation 10690. Up to 1314 conditions per place. [2024-11-07 19:40:57,413 INFO L140 encePairwiseOnDemand]: 62/66 looper letters, 154 selfloop transitions, 10 changer transitions 4/180 dead transitions. [2024-11-07 19:40:57,414 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 180 transitions, 1136 flow [2024-11-07 19:40:57,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-07 19:40:57,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-07 19:40:57,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 365 transitions. [2024-11-07 19:40:57,416 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.553030303030303 [2024-11-07 19:40:57,416 INFO L175 Difference]: Start difference. First operand has 92 places, 64 transitions, 357 flow. Second operand 10 states and 365 transitions. [2024-11-07 19:40:57,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 180 transitions, 1136 flow [2024-11-07 19:40:57,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 180 transitions, 1118 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-11-07 19:40:57,425 INFO L231 Difference]: Finished difference. Result has 101 places, 66 transitions, 385 flow [2024-11-07 19:40:57,425 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=339, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=385, PETRI_PLACES=101, PETRI_TRANSITIONS=66} [2024-11-07 19:40:57,426 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 43 predicate places. [2024-11-07 19:40:57,426 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 66 transitions, 385 flow [2024-11-07 19:40:57,426 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 27.90909090909091) internal successors, (307), 11 states have internal predecessors, (307), 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 19:40:57,426 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:40:57,426 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:40:57,444 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-07 19:40:57,627 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-07 19:40:57,627 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 14 more)] === [2024-11-07 19:40:57,627 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:40:57,628 INFO L85 PathProgramCache]: Analyzing trace with hash -1815092925, now seen corresponding path program 1 times [2024-11-07 19:40:57,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:40:57,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822006608] [2024-11-07 19:40:57,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:40:57,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:40:57,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-07 19:40:57,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1495986356] [2024-11-07 19:40:57,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:40:57,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:40:57,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:40:57,699 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 19:40:57,701 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-07 19:40:57,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:40:57,953 INFO L255 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-11-07 19:40:57,956 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:40:58,557 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-07 19:40:58,773 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:40:58,773 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 19:40:59,437 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 36 [2024-11-07 19:40:59,462 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 19:40:59,464 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 75 [2024-11-07 19:40:59,584 INFO L349 Elim1Store]: treesize reduction 50, result has 51.0 percent of original size [2024-11-07 19:40:59,585 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 127 treesize of output 126 [2024-11-07 19:40:59,739 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 19:40:59,740 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 117 treesize of output 85 [2024-11-07 19:41:04,224 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:41:04,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:41:04,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822006608] [2024-11-07 19:41:04,224 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-07 19:41:04,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1495986356] [2024-11-07 19:41:04,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1495986356] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 19:41:04,224 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-07 19:41:04,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15] total 28 [2024-11-07 19:41:04,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548798209] [2024-11-07 19:41:04,225 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-07 19:41:04,225 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-07 19:41:04,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:41:04,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-07 19:41:04,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=694, Unknown=0, NotChecked=0, Total=812 [2024-11-07 19:41:05,495 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 66 [2024-11-07 19:41:05,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 66 transitions, 385 flow. Second operand has 29 states, 29 states have (on average 19.896551724137932) internal successors, (577), 29 states have internal predecessors, (577), 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 19:41:05,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:41:05,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 66 [2024-11-07 19:41:05,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand