./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread-ext/01b_inc.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-ext/01b_inc.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', 'f8560a665e9f795d0e42a91570dfb6029ba2a9fa9f17754a8891b62ccadb5cdc'] 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-ext/01b_inc.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 f8560a665e9f795d0e42a91570dfb6029ba2a9fa9f17754a8891b62ccadb5cdc --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-07 19:07:26,221 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-07 19:07:26,297 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-07 19:07:26,303 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-07 19:07:26,303 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-07 19:07:26,322 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-07 19:07:26,322 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-07 19:07:26,323 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-07 19:07:26,323 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-07 19:07:26,323 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-07 19:07:26,324 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-07 19:07:26,324 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-07 19:07:26,324 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-07 19:07:26,325 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-07 19:07:26,325 INFO L153 SettingsManager]: * Use SBE=true [2024-11-07 19:07:26,325 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-07 19:07:26,325 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-07 19:07:26,325 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-07 19:07:26,325 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-07 19:07:26,325 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-07 19:07:26,325 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-07 19:07:26,325 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-07 19:07:26,325 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-07 19:07:26,325 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-07 19:07:26,325 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-07 19:07:26,325 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-07 19:07:26,325 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-07 19:07:26,325 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-07 19:07:26,325 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-07 19:07:26,325 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-07 19:07:26,326 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-07 19:07:26,326 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-07 19:07:26,326 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-07 19:07:26,326 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 19:07:26,326 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-07 19:07:26,326 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-07 19:07:26,326 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-07 19:07:26,326 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-07 19:07:26,326 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-07 19:07:26,326 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-07 19:07:26,326 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-07 19:07:26,327 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-07 19:07:26,327 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 -> f8560a665e9f795d0e42a91570dfb6029ba2a9fa9f17754a8891b62ccadb5cdc [2024-11-07 19:07:26,511 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-07 19:07:26,516 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-07 19:07:26,518 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-07 19:07:26,518 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-07 19:07:26,519 INFO L274 PluginConnector]: CDTParser initialized [2024-11-07 19:07:26,519 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/01b_inc.i [2024-11-07 19:07:27,621 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-07 19:07:27,857 INFO L384 CDTParser]: Found 1 translation units. [2024-11-07 19:07:27,858 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-ext/01b_inc.i [2024-11-07 19:07:27,868 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/c9b860124/28a3561943be4aacb265bb0b79e27182/FLAG58f82d184 [2024-11-07 19:07:27,882 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/c9b860124/28a3561943be4aacb265bb0b79e27182 [2024-11-07 19:07:27,884 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-07 19:07:27,885 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-07 19:07:27,887 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-07 19:07:27,887 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-07 19:07:27,892 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-07 19:07:27,893 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:07:27" (1/1) ... [2024-11-07 19:07:27,893 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@694ba27a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:07:27, skipping insertion in model container [2024-11-07 19:07:27,894 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:07:27" (1/1) ... [2024-11-07 19:07:27,918 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-07 19:07:28,110 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 19:07:28,119 INFO L200 MainTranslator]: Completed pre-run [2024-11-07 19:07:28,149 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 19:07:28,178 INFO L204 MainTranslator]: Completed translation [2024-11-07 19:07:28,178 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:07:28 WrapperNode [2024-11-07 19:07:28,178 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-07 19:07:28,179 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-07 19:07:28,180 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-07 19:07:28,180 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-07 19:07:28,184 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:07:28" (1/1) ... [2024-11-07 19:07:28,192 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:07:28" (1/1) ... [2024-11-07 19:07:28,207 INFO L138 Inliner]: procedures = 163, calls = 21, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 55 [2024-11-07 19:07:28,207 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-07 19:07:28,207 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-07 19:07:28,208 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-07 19:07:28,208 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-07 19:07:28,213 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:07:28" (1/1) ... [2024-11-07 19:07:28,213 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:07:28" (1/1) ... [2024-11-07 19:07:28,214 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:07:28" (1/1) ... [2024-11-07 19:07:28,221 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5]. The 0 writes are split as follows [0, 0]. [2024-11-07 19:07:28,221 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:07:28" (1/1) ... [2024-11-07 19:07:28,221 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:07:28" (1/1) ... [2024-11-07 19:07:28,223 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:07:28" (1/1) ... [2024-11-07 19:07:28,225 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:07:28" (1/1) ... [2024-11-07 19:07:28,226 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:07:28" (1/1) ... [2024-11-07 19:07:28,226 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:07:28" (1/1) ... [2024-11-07 19:07:28,229 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-07 19:07:28,229 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-07 19:07:28,229 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-07 19:07:28,229 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-07 19:07:28,232 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:07:28" (1/1) ... [2024-11-07 19:07:28,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 19:07:28,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:07:28,256 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 19:07:28,258 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 19:07:28,271 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-11-07 19:07:28,272 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-11-07 19:07:28,272 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-07 19:07:28,272 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-07 19:07:28,272 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-07 19:07:28,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-07 19:07:28,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-07 19:07:28,272 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-07 19:07:28,272 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-07 19:07:28,272 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-07 19:07:28,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-07 19:07:28,273 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 19:07:28,349 INFO L238 CfgBuilder]: Building ICFG [2024-11-07 19:07:28,350 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-07 19:07:28,444 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-07 19:07:28,445 INFO L287 CfgBuilder]: Performing block encoding [2024-11-07 19:07:28,539 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-07 19:07:28,540 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-07 19:07:28,540 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:07:28 BoogieIcfgContainer [2024-11-07 19:07:28,541 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-07 19:07:28,542 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-07 19:07:28,542 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-07 19:07:28,546 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-07 19:07:28,546 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 07:07:27" (1/3) ... [2024-11-07 19:07:28,546 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@94f0fdd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:07:28, skipping insertion in model container [2024-11-07 19:07:28,546 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:07:28" (2/3) ... [2024-11-07 19:07:28,547 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@94f0fdd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:07:28, skipping insertion in model container [2024-11-07 19:07:28,547 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:07:28" (3/3) ... [2024-11-07 19:07:28,548 INFO L112 eAbstractionObserver]: Analyzing ICFG 01b_inc.i [2024-11-07 19:07:28,558 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-07 19:07:28,559 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-07 19:07:28,559 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-07 19:07:28,596 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-07 19:07:28,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 24 places, 22 transitions, 48 flow [2024-11-07 19:07:28,644 INFO L124 PetriNetUnfolderBase]: 1/26 cut-off events. [2024-11-07 19:07:28,647 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-07 19:07:28,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30 conditions, 26 events. 1/26 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 33 event pairs, 0 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 19. Up to 2 conditions per place. [2024-11-07 19:07:28,650 INFO L82 GeneralOperation]: Start removeDead. Operand has 24 places, 22 transitions, 48 flow [2024-11-07 19:07:28,652 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 24 places, 22 transitions, 48 flow [2024-11-07 19:07:28,662 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 19:07:28,672 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;@2dbbe5a7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 19:07:28,672 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-07 19:07:28,675 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-07 19:07:28,675 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-07 19:07:28,675 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-07 19:07:28,675 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:07:28,676 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-07 19:07:28,676 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 19:07:28,679 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:07:28,679 INFO L85 PathProgramCache]: Analyzing trace with hash 175382, now seen corresponding path program 1 times [2024-11-07 19:07:28,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:07:28,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573315760] [2024-11-07 19:07:28,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:07:28,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:07:28,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:07:28,769 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 19:07:28,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:07:28,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573315760] [2024-11-07 19:07:28,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573315760] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:07:28,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:07:28,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 19:07:28,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670280272] [2024-11-07 19:07:28,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:07:28,777 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-07 19:07:28,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:07:28,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-07 19:07:28,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-07 19:07:28,793 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 22 [2024-11-07 19:07:28,795 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 22 transitions, 48 flow. Second operand has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 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 19:07:28,795 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:07:28,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 22 [2024-11-07 19:07:28,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:07:28,834 INFO L124 PetriNetUnfolderBase]: 19/64 cut-off events. [2024-11-07 19:07:28,834 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-07 19:07:28,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114 conditions, 64 events. 19/64 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 164 event pairs, 16 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 102. Up to 46 conditions per place. [2024-11-07 19:07:28,837 INFO L140 encePairwiseOnDemand]: 21/22 looper letters, 12 selfloop transitions, 0 changer transitions 0/19 dead transitions. [2024-11-07 19:07:28,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 19 transitions, 66 flow [2024-11-07 19:07:28,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-07 19:07:28,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-07 19:07:28,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 29 transitions. [2024-11-07 19:07:28,846 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6590909090909091 [2024-11-07 19:07:28,847 INFO L175 Difference]: Start difference. First operand has 24 places, 22 transitions, 48 flow. Second operand 2 states and 29 transitions. [2024-11-07 19:07:28,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 19 transitions, 66 flow [2024-11-07 19:07:28,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 19 transitions, 66 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-07 19:07:28,851 INFO L231 Difference]: Finished difference. Result has 22 places, 19 transitions, 42 flow [2024-11-07 19:07:28,852 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=42, PETRI_PLACES=22, PETRI_TRANSITIONS=19} [2024-11-07 19:07:28,854 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, -2 predicate places. [2024-11-07 19:07:28,855 INFO L471 AbstractCegarLoop]: Abstraction has has 22 places, 19 transitions, 42 flow [2024-11-07 19:07:28,855 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 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 19:07:28,855 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:07:28,855 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-07 19:07:28,855 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-07 19:07:28,855 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 19:07:28,856 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:07:28,856 INFO L85 PathProgramCache]: Analyzing trace with hash 929950781, now seen corresponding path program 1 times [2024-11-07 19:07:28,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:07:28,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035289936] [2024-11-07 19:07:28,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:07:28,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:07:28,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-07 19:07:28,880 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-07 19:07:28,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-07 19:07:28,906 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-07 19:07:28,907 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-07 19:07:28,909 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2024-11-07 19:07:28,912 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (2 of 4 remaining) [2024-11-07 19:07:28,913 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (1 of 4 remaining) [2024-11-07 19:07:28,913 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 4 remaining) [2024-11-07 19:07:28,913 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-07 19:07:28,914 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-07 19:07:28,915 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-07 19:07:28,916 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-07 19:07:28,940 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-07 19:07:28,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 40 places, 37 transitions, 84 flow [2024-11-07 19:07:28,953 INFO L124 PetriNetUnfolderBase]: 2/46 cut-off events. [2024-11-07 19:07:28,953 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-07 19:07:28,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 46 events. 2/46 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 109 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 33. Up to 3 conditions per place. [2024-11-07 19:07:28,954 INFO L82 GeneralOperation]: Start removeDead. Operand has 40 places, 37 transitions, 84 flow [2024-11-07 19:07:28,954 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 40 places, 37 transitions, 84 flow [2024-11-07 19:07:28,955 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 19:07:28,955 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;@2dbbe5a7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 19:07:28,955 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-07 19:07:28,957 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-07 19:07:28,957 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-07 19:07:28,957 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-07 19:07:28,957 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:07:28,957 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-07 19:07:28,958 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-07 19:07:28,959 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:07:28,959 INFO L85 PathProgramCache]: Analyzing trace with hash 212123, now seen corresponding path program 1 times [2024-11-07 19:07:28,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:07:28,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627763298] [2024-11-07 19:07:28,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:07:28,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:07:28,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:07:28,981 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 19:07:28,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:07:28,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627763298] [2024-11-07 19:07:28,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627763298] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:07:28,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:07:28,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 19:07:28,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203658301] [2024-11-07 19:07:28,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:07:28,982 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-07 19:07:28,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:07:28,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-07 19:07:28,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-07 19:07:28,982 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 37 [2024-11-07 19:07:28,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 37 transitions, 84 flow. Second operand has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 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 19:07:28,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:07:28,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 37 [2024-11-07 19:07:28,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:07:29,166 INFO L124 PetriNetUnfolderBase]: 403/845 cut-off events. [2024-11-07 19:07:29,166 INFO L125 PetriNetUnfolderBase]: For 33/33 co-relation queries the response was YES. [2024-11-07 19:07:29,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1526 conditions, 845 events. 403/845 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 4939 event pairs, 376 based on Foata normal form. 0/773 useless extension candidates. Maximal degree in co-relation 267. Up to 649 conditions per place. [2024-11-07 19:07:29,173 INFO L140 encePairwiseOnDemand]: 36/37 looper letters, 21 selfloop transitions, 0 changer transitions 0/34 dead transitions. [2024-11-07 19:07:29,173 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 34 transitions, 120 flow [2024-11-07 19:07:29,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-07 19:07:29,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-07 19:07:29,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 50 transitions. [2024-11-07 19:07:29,177 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6756756756756757 [2024-11-07 19:07:29,177 INFO L175 Difference]: Start difference. First operand has 40 places, 37 transitions, 84 flow. Second operand 2 states and 50 transitions. [2024-11-07 19:07:29,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 34 transitions, 120 flow [2024-11-07 19:07:29,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 34 transitions, 120 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-07 19:07:29,178 INFO L231 Difference]: Finished difference. Result has 38 places, 34 transitions, 78 flow [2024-11-07 19:07:29,178 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=78, PETRI_PLACES=38, PETRI_TRANSITIONS=34} [2024-11-07 19:07:29,179 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, -2 predicate places. [2024-11-07 19:07:29,179 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 34 transitions, 78 flow [2024-11-07 19:07:29,179 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 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 19:07:29,179 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:07:29,179 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2024-11-07 19:07:29,179 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-07 19:07:29,179 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-07 19:07:29,179 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:07:29,179 INFO L85 PathProgramCache]: Analyzing trace with hash -1653920442, now seen corresponding path program 1 times [2024-11-07 19:07:29,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:07:29,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191128074] [2024-11-07 19:07:29,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:07:29,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:07:29,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-07 19:07:29,198 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-07 19:07:29,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-07 19:07:29,207 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-07 19:07:29,207 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-07 19:07:29,207 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2024-11-07 19:07:29,207 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (3 of 5 remaining) [2024-11-07 19:07:29,207 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (2 of 5 remaining) [2024-11-07 19:07:29,207 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 5 remaining) [2024-11-07 19:07:29,207 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 5 remaining) [2024-11-07 19:07:29,207 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-07 19:07:29,207 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-07 19:07:29,208 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-07 19:07:29,208 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-07 19:07:29,234 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-07 19:07:29,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 56 places, 52 transitions, 122 flow [2024-11-07 19:07:29,246 INFO L124 PetriNetUnfolderBase]: 3/66 cut-off events. [2024-11-07 19:07:29,247 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-07 19:07:29,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 66 events. 3/66 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 201 event pairs, 0 based on Foata normal form. 0/52 useless extension candidates. Maximal degree in co-relation 53. Up to 4 conditions per place. [2024-11-07 19:07:29,247 INFO L82 GeneralOperation]: Start removeDead. Operand has 56 places, 52 transitions, 122 flow [2024-11-07 19:07:29,248 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 52 transitions, 122 flow [2024-11-07 19:07:29,249 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 19:07:29,249 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;@2dbbe5a7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 19:07:29,249 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-07 19:07:29,250 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-07 19:07:29,250 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-07 19:07:29,250 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-07 19:07:29,250 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:07:29,250 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-07 19:07:29,250 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-07 19:07:29,251 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:07:29,251 INFO L85 PathProgramCache]: Analyzing trace with hash 263759, now seen corresponding path program 1 times [2024-11-07 19:07:29,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:07:29,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299817328] [2024-11-07 19:07:29,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:07:29,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:07:29,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:07:29,276 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 19:07:29,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:07:29,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299817328] [2024-11-07 19:07:29,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299817328] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:07:29,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:07:29,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 19:07:29,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341861256] [2024-11-07 19:07:29,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:07:29,278 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-07 19:07:29,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:07:29,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-07 19:07:29,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-07 19:07:29,278 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 52 [2024-11-07 19:07:29,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 52 transitions, 122 flow. Second operand has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 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 19:07:29,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:07:29,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 52 [2024-11-07 19:07:29,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:07:29,985 INFO L124 PetriNetUnfolderBase]: 5803/9835 cut-off events. [2024-11-07 19:07:29,986 INFO L125 PetriNetUnfolderBase]: For 679/679 co-relation queries the response was YES. [2024-11-07 19:07:30,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18212 conditions, 9835 events. 5803/9835 cut-off events. For 679/679 co-relation queries the response was YES. Maximal size of possible extension queue 528. Compared 74404 event pairs, 5560 based on Foata normal form. 0/8904 useless extension candidates. Maximal degree in co-relation 1532. Up to 8020 conditions per place. [2024-11-07 19:07:30,039 INFO L140 encePairwiseOnDemand]: 51/52 looper letters, 30 selfloop transitions, 0 changer transitions 0/49 dead transitions. [2024-11-07 19:07:30,039 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 49 transitions, 176 flow [2024-11-07 19:07:30,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-07 19:07:30,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-07 19:07:30,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 71 transitions. [2024-11-07 19:07:30,041 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6826923076923077 [2024-11-07 19:07:30,041 INFO L175 Difference]: Start difference. First operand has 56 places, 52 transitions, 122 flow. Second operand 2 states and 71 transitions. [2024-11-07 19:07:30,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 49 transitions, 176 flow [2024-11-07 19:07:30,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 49 transitions, 174 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-11-07 19:07:30,045 INFO L231 Difference]: Finished difference. Result has 54 places, 49 transitions, 114 flow [2024-11-07 19:07:30,045 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=114, PETRI_PLACES=54, PETRI_TRANSITIONS=49} [2024-11-07 19:07:30,046 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, -2 predicate places. [2024-11-07 19:07:30,047 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 49 transitions, 114 flow [2024-11-07 19:07:30,047 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 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 19:07:30,047 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:07:30,047 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:07:30,047 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-07 19:07:30,047 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-07 19:07:30,047 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:07:30,047 INFO L85 PathProgramCache]: Analyzing trace with hash 484077808, now seen corresponding path program 1 times [2024-11-07 19:07:30,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:07:30,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680093790] [2024-11-07 19:07:30,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:07:30,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:07:30,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:07:30,232 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 19:07:30,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:07:30,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680093790] [2024-11-07 19:07:30,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680093790] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:07:30,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:07:30,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 19:07:30,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296508744] [2024-11-07 19:07:30,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:07:30,233 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 19:07:30,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:07:30,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 19:07:30,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-07 19:07:30,248 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 52 [2024-11-07 19:07:30,248 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 49 transitions, 114 flow. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 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 19:07:30,248 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:07:30,248 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 52 [2024-11-07 19:07:30,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:07:31,359 INFO L124 PetriNetUnfolderBase]: 11367/19191 cut-off events. [2024-11-07 19:07:31,359 INFO L125 PetriNetUnfolderBase]: For 368/368 co-relation queries the response was YES. [2024-11-07 19:07:31,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35824 conditions, 19191 events. 11367/19191 cut-off events. For 368/368 co-relation queries the response was YES. Maximal size of possible extension queue 1116. Compared 156012 event pairs, 3351 based on Foata normal form. 0/16604 useless extension candidates. Maximal degree in co-relation 35818. Up to 7422 conditions per place. [2024-11-07 19:07:31,445 INFO L140 encePairwiseOnDemand]: 42/52 looper letters, 104 selfloop transitions, 12 changer transitions 0/129 dead transitions. [2024-11-07 19:07:31,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 129 transitions, 536 flow [2024-11-07 19:07:31,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-07 19:07:31,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-07 19:07:31,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 206 transitions. [2024-11-07 19:07:31,448 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6602564102564102 [2024-11-07 19:07:31,448 INFO L175 Difference]: Start difference. First operand has 54 places, 49 transitions, 114 flow. Second operand 6 states and 206 transitions. [2024-11-07 19:07:31,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 129 transitions, 536 flow [2024-11-07 19:07:31,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 129 transitions, 536 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-07 19:07:31,453 INFO L231 Difference]: Finished difference. Result has 63 places, 61 transitions, 205 flow [2024-11-07 19:07:31,453 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=205, PETRI_PLACES=63, PETRI_TRANSITIONS=61} [2024-11-07 19:07:31,455 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 7 predicate places. [2024-11-07 19:07:31,455 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 61 transitions, 205 flow [2024-11-07 19:07:31,455 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 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 19:07:31,455 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:07:31,455 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2024-11-07 19:07:31,455 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-07 19:07:31,455 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-07 19:07:31,456 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:07:31,456 INFO L85 PathProgramCache]: Analyzing trace with hash -75681636, now seen corresponding path program 1 times [2024-11-07 19:07:31,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:07:31,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257041211] [2024-11-07 19:07:31,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:07:31,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:07:31,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-07 19:07:31,465 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-07 19:07:31,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-07 19:07:31,479 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-07 19:07:31,479 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-07 19:07:31,479 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2024-11-07 19:07:31,479 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (4 of 6 remaining) [2024-11-07 19:07:31,479 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (3 of 6 remaining) [2024-11-07 19:07:31,479 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (2 of 6 remaining) [2024-11-07 19:07:31,479 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 6 remaining) [2024-11-07 19:07:31,479 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 6 remaining) [2024-11-07 19:07:31,479 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-07 19:07:31,479 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-11-07 19:07:31,480 WARN L244 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-07 19:07:31,480 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-11-07 19:07:31,511 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-07 19:07:31,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 72 places, 67 transitions, 162 flow [2024-11-07 19:07:31,516 INFO L124 PetriNetUnfolderBase]: 4/86 cut-off events. [2024-11-07 19:07:31,516 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-11-07 19:07:31,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105 conditions, 86 events. 4/86 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 288 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 78. Up to 5 conditions per place. [2024-11-07 19:07:31,518 INFO L82 GeneralOperation]: Start removeDead. Operand has 72 places, 67 transitions, 162 flow [2024-11-07 19:07:31,519 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 72 places, 67 transitions, 162 flow [2024-11-07 19:07:31,520 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 19:07:31,521 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;@2dbbe5a7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 19:07:31,521 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-11-07 19:07:31,522 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-07 19:07:31,523 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-07 19:07:31,523 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-07 19:07:31,523 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:07:31,523 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-07 19:07:31,523 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-07 19:07:31,523 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:07:31,523 INFO L85 PathProgramCache]: Analyzing trace with hash 330290, now seen corresponding path program 1 times [2024-11-07 19:07:31,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:07:31,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351250117] [2024-11-07 19:07:31,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:07:31,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:07:31,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:07:31,531 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 19:07:31,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:07:31,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351250117] [2024-11-07 19:07:31,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351250117] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:07:31,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:07:31,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 19:07:31,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78440447] [2024-11-07 19:07:31,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:07:31,534 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-07 19:07:31,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:07:31,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-07 19:07:31,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-07 19:07:31,534 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 67 [2024-11-07 19:07:31,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 67 transitions, 162 flow. Second operand has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 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 19:07:31,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:07:31,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 67 [2024-11-07 19:07:31,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:07:36,161 INFO L124 PetriNetUnfolderBase]: 71899/108249 cut-off events. [2024-11-07 19:07:36,162 INFO L125 PetriNetUnfolderBase]: For 10977/10977 co-relation queries the response was YES. [2024-11-07 19:07:36,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 204107 conditions, 108249 events. 71899/108249 cut-off events. For 10977/10977 co-relation queries the response was YES. Maximal size of possible extension queue 4329. Compared 924403 event pairs, 69712 based on Foata normal form. 0/97400 useless extension candidates. Maximal degree in co-relation 18298. Up to 91855 conditions per place. [2024-11-07 19:07:36,868 INFO L140 encePairwiseOnDemand]: 66/67 looper letters, 39 selfloop transitions, 0 changer transitions 0/64 dead transitions. [2024-11-07 19:07:36,868 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 64 transitions, 234 flow [2024-11-07 19:07:36,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-07 19:07:36,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-07 19:07:36,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 92 transitions. [2024-11-07 19:07:36,869 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6865671641791045 [2024-11-07 19:07:36,869 INFO L175 Difference]: Start difference. First operand has 72 places, 67 transitions, 162 flow. Second operand 2 states and 92 transitions. [2024-11-07 19:07:36,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 64 transitions, 234 flow [2024-11-07 19:07:36,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 64 transitions, 228 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-11-07 19:07:36,883 INFO L231 Difference]: Finished difference. Result has 70 places, 64 transitions, 150 flow [2024-11-07 19:07:36,883 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=150, PETRI_PLACES=70, PETRI_TRANSITIONS=64} [2024-11-07 19:07:36,885 INFO L277 CegarLoopForPetriNet]: 72 programPoint places, -2 predicate places. [2024-11-07 19:07:36,885 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 64 transitions, 150 flow [2024-11-07 19:07:36,885 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 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 19:07:36,885 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:07:36,886 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:07:36,886 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-07 19:07:36,886 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-07 19:07:36,886 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:07:36,886 INFO L85 PathProgramCache]: Analyzing trace with hash 394325089, now seen corresponding path program 1 times [2024-11-07 19:07:36,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:07:36,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583002999] [2024-11-07 19:07:36,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:07:36,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:07:36,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:07:37,031 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 19:07:37,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:07:37,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583002999] [2024-11-07 19:07:37,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583002999] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:07:37,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:07:37,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 19:07:37,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426525090] [2024-11-07 19:07:37,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:07:37,033 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 19:07:37,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:07:37,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 19:07:37,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-07 19:07:37,050 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 67 [2024-11-07 19:07:37,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 64 transitions, 150 flow. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 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 19:07:37,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:07:37,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 67 [2024-11-07 19:07:37,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:07:49,706 INFO L124 PetriNetUnfolderBase]: 207509/303575 cut-off events. [2024-11-07 19:07:49,707 INFO L125 PetriNetUnfolderBase]: For 5181/5181 co-relation queries the response was YES. [2024-11-07 19:07:50,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 576711 conditions, 303575 events. 207509/303575 cut-off events. For 5181/5181 co-relation queries the response was YES. Maximal size of possible extension queue 12236. Compared 2715801 event pairs, 70926 based on Foata normal form. 0/257763 useless extension candidates. Maximal degree in co-relation 576704. Up to 133343 conditions per place. [2024-11-07 19:07:51,498 INFO L140 encePairwiseOnDemand]: 55/67 looper letters, 144 selfloop transitions, 15 changer transitions 0/176 dead transitions. [2024-11-07 19:07:51,499 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 176 transitions, 742 flow [2024-11-07 19:07:51,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-07 19:07:51,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-07 19:07:51,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 275 transitions. [2024-11-07 19:07:51,500 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6840796019900498 [2024-11-07 19:07:51,500 INFO L175 Difference]: Start difference. First operand has 70 places, 64 transitions, 150 flow. Second operand 6 states and 275 transitions. [2024-11-07 19:07:51,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 176 transitions, 742 flow [2024-11-07 19:07:51,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 176 transitions, 742 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-07 19:07:51,507 INFO L231 Difference]: Finished difference. Result has 79 places, 80 transitions, 268 flow [2024-11-07 19:07:51,507 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=268, PETRI_PLACES=79, PETRI_TRANSITIONS=80} [2024-11-07 19:07:51,507 INFO L277 CegarLoopForPetriNet]: 72 programPoint places, 7 predicate places. [2024-11-07 19:07:51,508 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 80 transitions, 268 flow [2024-11-07 19:07:51,508 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 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 19:07:51,508 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:07:51,511 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:07:51,511 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-07 19:07:51,511 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-07 19:07:51,512 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:07:51,512 INFO L85 PathProgramCache]: Analyzing trace with hash 2020836229, now seen corresponding path program 1 times [2024-11-07 19:07:51,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:07:51,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769474239] [2024-11-07 19:07:51,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:07:51,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:07:51,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:07:51,614 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 19:07:51,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:07:51,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769474239] [2024-11-07 19:07:51,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769474239] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:07:51,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:07:51,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 19:07:51,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301362310] [2024-11-07 19:07:51,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:07:51,615 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 19:07:51,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:07:51,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 19:07:51,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-07 19:07:51,622 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 67 [2024-11-07 19:07:51,622 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 80 transitions, 268 flow. Second operand has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 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 19:07:51,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:07:51,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 67 [2024-11-07 19:07:51,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand