./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl-time-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4f9af400 extending candidate: java ['java'] extending candidate: /usr/bin/java ['java', '/usr/bin/java'] extending candidate: /opt/oracle-jdk-bin-*/bin/java ['java', '/usr/bin/java'] extending candidate: /opt/openjdk-*/bin/java ['java', '/usr/bin/java'] extending candidate: /usr/lib/jvm/java-*-openjdk-amd64/bin/java ['java', '/usr/bin/java', '/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java', '/usr/lib/jvm/java-17-openjdk-amd64/bin/java', '/usr/lib/jvm/java-11-openjdk-amd64/bin/java', '/usr/lib/jvm/java-1.17.0-openjdk-amd64/bin/java'] ['/root/.sdkman/candidates/java/21.0.5-tem/bin/java', '-Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config', '-Xmx15G', '-Xms4m', '-jar', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar', '-data', '@noDefault', '-ultimatedata', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data', '-tc', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml', '-i', '../sv-benchmarks/c/weaver/chl-time-subst.wvr.c', '-s', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf', '--cacsl2boogietranslator.entry.function', 'main', '--witnessprinter.witness.directory', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux', '--witnessprinter.witness.filename', 'witness', '--witnessprinter.write.witness.besides.input.file', 'false', '--witnessprinter.graph.data.specification', 'CHECK( init(main()), LTL(G ! call(reach_error())) )\n\n', '--witnessprinter.graph.data.producer', 'Automizer', '--witnessprinter.graph.data.architecture', '32bit', '--witnessprinter.graph.data.programhash', '55dce27fdc9c44ff408174badf0a943270d2adadc96357bb37463f058a6a7cee'] Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/chl-time-subst.wvr.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 55dce27fdc9c44ff408174badf0a943270d2adadc96357bb37463f058a6a7cee --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-07 11:24:07,080 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-07 11:24:07,167 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-07 11:24:07,176 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-07 11:24:07,176 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-07 11:24:07,206 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-07 11:24:07,207 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-07 11:24:07,207 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-07 11:24:07,208 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-07 11:24:07,208 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-07 11:24:07,208 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-07 11:24:07,208 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-07 11:24:07,209 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-07 11:24:07,209 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-07 11:24:07,209 INFO L153 SettingsManager]: * Use SBE=true [2024-11-07 11:24:07,209 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-07 11:24:07,209 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-07 11:24:07,210 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-07 11:24:07,210 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-07 11:24:07,210 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-07 11:24:07,210 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-07 11:24:07,210 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-07 11:24:07,210 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-07 11:24:07,210 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-07 11:24:07,210 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-07 11:24:07,210 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-07 11:24:07,210 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-07 11:24:07,210 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-07 11:24:07,210 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-07 11:24:07,210 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-07 11:24:07,211 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-07 11:24:07,211 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-07 11:24:07,211 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 11:24:07,211 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-07 11:24:07,211 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-07 11:24:07,211 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-07 11:24:07,211 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-07 11:24:07,211 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-07 11:24:07,211 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-07 11:24:07,211 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-07 11:24:07,211 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-07 11:24:07,211 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-07 11:24:07,211 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 55dce27fdc9c44ff408174badf0a943270d2adadc96357bb37463f058a6a7cee [2024-11-07 11:24:07,566 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-07 11:24:07,578 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-07 11:24:07,580 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-07 11:24:07,581 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-07 11:24:07,582 INFO L274 PluginConnector]: CDTParser initialized [2024-11-07 11:24:07,583 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-time-subst.wvr.c [2024-11-07 11:24:08,892 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-07 11:24:09,157 INFO L384 CDTParser]: Found 1 translation units. [2024-11-07 11:24:09,162 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/chl-time-subst.wvr.c [2024-11-07 11:24:09,171 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/4531e1342/e074705653b744e3b669633d9b8eadbd/FLAG3555796c3 [2024-11-07 11:24:09,188 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/4531e1342/e074705653b744e3b669633d9b8eadbd [2024-11-07 11:24:09,190 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-07 11:24:09,191 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-07 11:24:09,192 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-07 11:24:09,193 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-07 11:24:09,197 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-07 11:24:09,198 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 11:24:09" (1/1) ... [2024-11-07 11:24:09,198 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41c8a55b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:24:09, skipping insertion in model container [2024-11-07 11:24:09,199 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 11:24:09" (1/1) ... [2024-11-07 11:24:09,214 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-07 11:24:09,379 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/chl-time-subst.wvr.c[2918,2931] [2024-11-07 11:24:09,388 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 11:24:09,399 INFO L200 MainTranslator]: Completed pre-run [2024-11-07 11:24:09,419 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/chl-time-subst.wvr.c[2918,2931] [2024-11-07 11:24:09,422 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 11:24:09,434 INFO L204 MainTranslator]: Completed translation [2024-11-07 11:24:09,435 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:24:09 WrapperNode [2024-11-07 11:24:09,435 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-07 11:24:09,436 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-07 11:24:09,437 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-07 11:24:09,437 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-07 11:24:09,442 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:24:09" (1/1) ... [2024-11-07 11:24:09,449 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:24:09" (1/1) ... [2024-11-07 11:24:09,486 INFO L138 Inliner]: procedures = 22, calls = 24, calls flagged for inlining = 11, calls inlined = 21, statements flattened = 207 [2024-11-07 11:24:09,487 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-07 11:24:09,491 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-07 11:24:09,491 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-07 11:24:09,491 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-07 11:24:09,502 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:24:09" (1/1) ... [2024-11-07 11:24:09,502 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:24:09" (1/1) ... [2024-11-07 11:24:09,510 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:24:09" (1/1) ... [2024-11-07 11:24:09,538 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-07 11:24:09,541 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:24:09" (1/1) ... [2024-11-07 11:24:09,543 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:24:09" (1/1) ... [2024-11-07 11:24:09,552 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:24:09" (1/1) ... [2024-11-07 11:24:09,558 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:24:09" (1/1) ... [2024-11-07 11:24:09,560 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:24:09" (1/1) ... [2024-11-07 11:24:09,561 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:24:09" (1/1) ... [2024-11-07 11:24:09,562 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-07 11:24:09,567 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-07 11:24:09,567 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-07 11:24:09,567 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-07 11:24:09,568 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:24:09" (1/1) ... [2024-11-07 11:24:09,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 11:24:09,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:24:09,603 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-07 11:24:09,606 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-07 11:24:09,629 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-07 11:24:09,629 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-07 11:24:09,630 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-07 11:24:09,630 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-07 11:24:09,630 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-07 11:24:09,630 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-07 11:24:09,630 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-07 11:24:09,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-07 11:24:09,630 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-07 11:24:09,630 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-07 11:24:09,631 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-07 11:24:09,631 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-07 11:24:09,632 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-07 11:24:09,746 INFO L238 CfgBuilder]: Building ICFG [2024-11-07 11:24:09,748 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-07 11:24:10,076 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-07 11:24:10,076 INFO L287 CfgBuilder]: Performing block encoding [2024-11-07 11:24:10,449 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-07 11:24:10,449 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-07 11:24:10,450 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 11:24:10 BoogieIcfgContainer [2024-11-07 11:24:10,450 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-07 11:24:10,452 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-07 11:24:10,453 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-07 11:24:10,457 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-07 11:24:10,457 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 11:24:09" (1/3) ... [2024-11-07 11:24:10,458 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d757f50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 11:24:10, skipping insertion in model container [2024-11-07 11:24:10,458 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:24:09" (2/3) ... [2024-11-07 11:24:10,459 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d757f50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 11:24:10, skipping insertion in model container [2024-11-07 11:24:10,459 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 11:24:10" (3/3) ... [2024-11-07 11:24:10,461 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-time-subst.wvr.c [2024-11-07 11:24:10,475 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-07 11:24:10,475 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-07 11:24:10,475 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-07 11:24:10,542 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-07 11:24:10,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 35 places, 25 transitions, 71 flow [2024-11-07 11:24:10,614 INFO L124 PetriNetUnfolderBase]: 0/22 cut-off events. [2024-11-07 11:24:10,617 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-07 11:24:10,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35 conditions, 22 events. 0/22 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 20 event pairs, 0 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2024-11-07 11:24:10,621 INFO L82 GeneralOperation]: Start removeDead. Operand has 35 places, 25 transitions, 71 flow [2024-11-07 11:24:10,623 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 31 places, 21 transitions, 60 flow [2024-11-07 11:24:10,632 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 11:24:10,643 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@49f2f3e6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 11:24:10,643 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-07 11:24:10,658 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-07 11:24:10,658 INFO L124 PetriNetUnfolderBase]: 0/20 cut-off events. [2024-11-07 11:24:10,659 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-07 11:24:10,659 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:24:10,660 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] [2024-11-07 11:24:10,660 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 11:24:10,664 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:24:10,664 INFO L85 PathProgramCache]: Analyzing trace with hash -538905494, now seen corresponding path program 1 times [2024-11-07 11:24:10,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:24:10,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859587505] [2024-11-07 11:24:10,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:24:10,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:24:10,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:24:12,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:24:12,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:24:12,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859587505] [2024-11-07 11:24:12,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859587505] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:24:12,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:24:12,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-07 11:24:12,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953502976] [2024-11-07 11:24:12,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:24:12,617 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 11:24:12,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:24:12,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 11:24:12,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-07 11:24:12,643 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 25 [2024-11-07 11:24:12,645 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 21 transitions, 60 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:24:12,646 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:24:12,646 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 25 [2024-11-07 11:24:12,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:24:13,073 INFO L124 PetriNetUnfolderBase]: 178/337 cut-off events. [2024-11-07 11:24:13,075 INFO L125 PetriNetUnfolderBase]: For 57/57 co-relation queries the response was YES. [2024-11-07 11:24:13,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 721 conditions, 337 events. 178/337 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1314 event pairs, 46 based on Foata normal form. 1/335 useless extension candidates. Maximal degree in co-relation 575. Up to 110 conditions per place. [2024-11-07 11:24:13,080 INFO L140 encePairwiseOnDemand]: 21/25 looper letters, 30 selfloop transitions, 2 changer transitions 8/44 dead transitions. [2024-11-07 11:24:13,080 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 44 transitions, 210 flow [2024-11-07 11:24:13,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 11:24:13,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 11:24:13,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 76 transitions. [2024-11-07 11:24:13,091 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.608 [2024-11-07 11:24:13,093 INFO L175 Difference]: Start difference. First operand has 31 places, 21 transitions, 60 flow. Second operand 5 states and 76 transitions. [2024-11-07 11:24:13,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 44 transitions, 210 flow [2024-11-07 11:24:13,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 44 transitions, 182 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-07 11:24:13,101 INFO L231 Difference]: Finished difference. Result has 32 places, 22 transitions, 63 flow [2024-11-07 11:24:13,103 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=63, PETRI_PLACES=32, PETRI_TRANSITIONS=22} [2024-11-07 11:24:13,107 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 1 predicate places. [2024-11-07 11:24:13,107 INFO L471 AbstractCegarLoop]: Abstraction has has 32 places, 22 transitions, 63 flow [2024-11-07 11:24:13,107 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:24:13,108 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:24:13,108 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] [2024-11-07 11:24:13,108 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-07 11:24:13,108 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 11:24:13,108 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:24:13,108 INFO L85 PathProgramCache]: Analyzing trace with hash 407022892, now seen corresponding path program 2 times [2024-11-07 11:24:13,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:24:13,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415131671] [2024-11-07 11:24:13,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:24:13,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:24:13,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:24:14,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:24:14,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:24:14,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415131671] [2024-11-07 11:24:14,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415131671] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:24:14,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:24:14,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-07 11:24:14,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954818217] [2024-11-07 11:24:14,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:24:14,064 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 11:24:14,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:24:14,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 11:24:14,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-07 11:24:14,065 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 25 [2024-11-07 11:24:14,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 22 transitions, 63 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:24:14,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:24:14,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 25 [2024-11-07 11:24:14,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:24:14,398 INFO L124 PetriNetUnfolderBase]: 194/367 cut-off events. [2024-11-07 11:24:14,399 INFO L125 PetriNetUnfolderBase]: For 172/172 co-relation queries the response was YES. [2024-11-07 11:24:14,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 853 conditions, 367 events. 194/367 cut-off events. For 172/172 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1578 event pairs, 24 based on Foata normal form. 1/367 useless extension candidates. Maximal degree in co-relation 839. Up to 151 conditions per place. [2024-11-07 11:24:14,405 INFO L140 encePairwiseOnDemand]: 21/25 looper letters, 32 selfloop transitions, 2 changer transitions 12/50 dead transitions. [2024-11-07 11:24:14,405 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 50 transitions, 234 flow [2024-11-07 11:24:14,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 11:24:14,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 11:24:14,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 80 transitions. [2024-11-07 11:24:14,408 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.64 [2024-11-07 11:24:14,408 INFO L175 Difference]: Start difference. First operand has 32 places, 22 transitions, 63 flow. Second operand 5 states and 80 transitions. [2024-11-07 11:24:14,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 50 transitions, 234 flow [2024-11-07 11:24:14,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 50 transitions, 227 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-07 11:24:14,411 INFO L231 Difference]: Finished difference. Result has 36 places, 22 transitions, 73 flow [2024-11-07 11:24:14,411 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=73, PETRI_PLACES=36, PETRI_TRANSITIONS=22} [2024-11-07 11:24:14,412 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 5 predicate places. [2024-11-07 11:24:14,412 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 22 transitions, 73 flow [2024-11-07 11:24:14,412 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:24:14,413 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:24:14,413 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] [2024-11-07 11:24:14,413 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-07 11:24:14,413 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 11:24:14,413 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:24:14,413 INFO L85 PathProgramCache]: Analyzing trace with hash 921231556, now seen corresponding path program 3 times [2024-11-07 11:24:14,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:24:14,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15259623] [2024-11-07 11:24:14,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:24:14,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:24:14,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:24:15,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:24:15,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:24:15,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15259623] [2024-11-07 11:24:15,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15259623] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:24:15,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:24:15,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-07 11:24:15,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815927297] [2024-11-07 11:24:15,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:24:15,239 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 11:24:15,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:24:15,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 11:24:15,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-07 11:24:15,240 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 25 [2024-11-07 11:24:15,240 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 22 transitions, 73 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:24:15,240 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:24:15,240 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 25 [2024-11-07 11:24:15,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:24:15,487 INFO L124 PetriNetUnfolderBase]: 153/301 cut-off events. [2024-11-07 11:24:15,488 INFO L125 PetriNetUnfolderBase]: For 315/315 co-relation queries the response was YES. [2024-11-07 11:24:15,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 761 conditions, 301 events. 153/301 cut-off events. For 315/315 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1141 event pairs, 35 based on Foata normal form. 1/301 useless extension candidates. Maximal degree in co-relation 745. Up to 109 conditions per place. [2024-11-07 11:24:15,491 INFO L140 encePairwiseOnDemand]: 21/25 looper letters, 31 selfloop transitions, 3 changer transitions 8/46 dead transitions. [2024-11-07 11:24:15,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 46 transitions, 229 flow [2024-11-07 11:24:15,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 11:24:15,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 11:24:15,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 77 transitions. [2024-11-07 11:24:15,492 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.616 [2024-11-07 11:24:15,492 INFO L175 Difference]: Start difference. First operand has 36 places, 22 transitions, 73 flow. Second operand 5 states and 77 transitions. [2024-11-07 11:24:15,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 46 transitions, 229 flow [2024-11-07 11:24:15,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 46 transitions, 210 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-11-07 11:24:15,495 INFO L231 Difference]: Finished difference. Result has 38 places, 23 transitions, 84 flow [2024-11-07 11:24:15,495 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=84, PETRI_PLACES=38, PETRI_TRANSITIONS=23} [2024-11-07 11:24:15,496 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 7 predicate places. [2024-11-07 11:24:15,496 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 23 transitions, 84 flow [2024-11-07 11:24:15,496 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:24:15,496 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:24:15,496 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] [2024-11-07 11:24:15,496 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-07 11:24:15,497 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 11:24:15,497 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:24:15,497 INFO L85 PathProgramCache]: Analyzing trace with hash -534392932, now seen corresponding path program 4 times [2024-11-07 11:24:15,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:24:15,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313569452] [2024-11-07 11:24:15,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:24:15,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:24:15,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:24:16,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:24:16,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:24:16,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313569452] [2024-11-07 11:24:16,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313569452] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:24:16,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:24:16,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-07 11:24:16,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209784079] [2024-11-07 11:24:16,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:24:16,435 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 11:24:16,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:24:16,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 11:24:16,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-07 11:24:16,436 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 25 [2024-11-07 11:24:16,438 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 23 transitions, 84 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:24:16,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:24:16,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 25 [2024-11-07 11:24:16,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:24:16,753 INFO L124 PetriNetUnfolderBase]: 160/316 cut-off events. [2024-11-07 11:24:16,754 INFO L125 PetriNetUnfolderBase]: For 356/356 co-relation queries the response was YES. [2024-11-07 11:24:16,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 856 conditions, 316 events. 160/316 cut-off events. For 356/356 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1287 event pairs, 28 based on Foata normal form. 1/316 useless extension candidates. Maximal degree in co-relation 840. Up to 137 conditions per place. [2024-11-07 11:24:16,759 INFO L140 encePairwiseOnDemand]: 21/25 looper letters, 30 selfloop transitions, 2 changer transitions 12/48 dead transitions. [2024-11-07 11:24:16,759 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 48 transitions, 251 flow [2024-11-07 11:24:16,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 11:24:16,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 11:24:16,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 78 transitions. [2024-11-07 11:24:16,762 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.624 [2024-11-07 11:24:16,762 INFO L175 Difference]: Start difference. First operand has 38 places, 23 transitions, 84 flow. Second operand 5 states and 78 transitions. [2024-11-07 11:24:16,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 48 transitions, 251 flow [2024-11-07 11:24:16,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 48 transitions, 244 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-07 11:24:16,766 INFO L231 Difference]: Finished difference. Result has 42 places, 23 transitions, 93 flow [2024-11-07 11:24:16,767 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=93, PETRI_PLACES=42, PETRI_TRANSITIONS=23} [2024-11-07 11:24:16,767 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 11 predicate places. [2024-11-07 11:24:16,768 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 23 transitions, 93 flow [2024-11-07 11:24:16,768 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:24:16,768 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:24:16,768 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] [2024-11-07 11:24:16,768 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-07 11:24:16,768 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 11:24:16,768 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:24:16,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1865595054, now seen corresponding path program 5 times [2024-11-07 11:24:16,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:24:16,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46976547] [2024-11-07 11:24:16,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:24:16,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:24:16,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:24:17,519 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 11:24:17,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:24:17,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46976547] [2024-11-07 11:24:17,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46976547] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:24:17,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:24:17,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-07 11:24:17,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084126456] [2024-11-07 11:24:17,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:24:17,520 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 11:24:17,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:24:17,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 11:24:17,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-07 11:24:17,521 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 25 [2024-11-07 11:24:17,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 23 transitions, 93 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:24:17,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:24:17,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 25 [2024-11-07 11:24:17,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:24:17,839 INFO L124 PetriNetUnfolderBase]: 111/226 cut-off events. [2024-11-07 11:24:17,839 INFO L125 PetriNetUnfolderBase]: For 432/432 co-relation queries the response was YES. [2024-11-07 11:24:17,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 656 conditions, 226 events. 111/226 cut-off events. For 432/432 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 788 event pairs, 21 based on Foata normal form. 1/226 useless extension candidates. Maximal degree in co-relation 642. Up to 69 conditions per place. [2024-11-07 11:24:17,842 INFO L140 encePairwiseOnDemand]: 21/25 looper letters, 20 selfloop transitions, 1 changer transitions 19/44 dead transitions. [2024-11-07 11:24:17,842 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 44 transitions, 230 flow [2024-11-07 11:24:17,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 11:24:17,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 11:24:17,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 75 transitions. [2024-11-07 11:24:17,845 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-11-07 11:24:17,845 INFO L175 Difference]: Start difference. First operand has 42 places, 23 transitions, 93 flow. Second operand 5 states and 75 transitions. [2024-11-07 11:24:17,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 44 transitions, 230 flow [2024-11-07 11:24:17,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 44 transitions, 218 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-11-07 11:24:17,849 INFO L231 Difference]: Finished difference. Result has 43 places, 21 transitions, 73 flow [2024-11-07 11:24:17,850 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=73, PETRI_PLACES=43, PETRI_TRANSITIONS=21} [2024-11-07 11:24:17,850 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 12 predicate places. [2024-11-07 11:24:17,851 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 21 transitions, 73 flow [2024-11-07 11:24:17,851 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:24:17,852 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:24:17,852 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] [2024-11-07 11:24:17,852 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-07 11:24:17,853 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 11:24:17,853 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:24:17,853 INFO L85 PathProgramCache]: Analyzing trace with hash 104390900, now seen corresponding path program 6 times [2024-11-07 11:24:17,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:24:17,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375461490] [2024-11-07 11:24:17,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:24:17,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:24:17,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:24:18,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:24:18,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:24:18,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375461490] [2024-11-07 11:24:18,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375461490] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:24:18,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:24:18,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-07 11:24:18,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517023331] [2024-11-07 11:24:18,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:24:18,472 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 11:24:18,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:24:18,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 11:24:18,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-07 11:24:18,473 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 25 [2024-11-07 11:24:18,473 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 21 transitions, 73 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:24:18,473 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:24:18,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 25 [2024-11-07 11:24:18,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:24:18,687 INFO L124 PetriNetUnfolderBase]: 52/115 cut-off events. [2024-11-07 11:24:18,688 INFO L125 PetriNetUnfolderBase]: For 184/184 co-relation queries the response was YES. [2024-11-07 11:24:18,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 336 conditions, 115 events. 52/115 cut-off events. For 184/184 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 292 event pairs, 10 based on Foata normal form. 1/116 useless extension candidates. Maximal degree in co-relation 327. Up to 54 conditions per place. [2024-11-07 11:24:18,689 INFO L140 encePairwiseOnDemand]: 21/25 looper letters, 0 selfloop transitions, 0 changer transitions 29/29 dead transitions. [2024-11-07 11:24:18,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 29 transitions, 147 flow [2024-11-07 11:24:18,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 11:24:18,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 11:24:18,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 62 transitions. [2024-11-07 11:24:18,691 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.496 [2024-11-07 11:24:18,692 INFO L175 Difference]: Start difference. First operand has 43 places, 21 transitions, 73 flow. Second operand 5 states and 62 transitions. [2024-11-07 11:24:18,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 29 transitions, 147 flow [2024-11-07 11:24:18,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 29 transitions, 133 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-11-07 11:24:18,695 INFO L231 Difference]: Finished difference. Result has 36 places, 0 transitions, 0 flow [2024-11-07 11:24:18,695 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=32, 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=5, PETRI_FLOW=0, PETRI_PLACES=36, PETRI_TRANSITIONS=0} [2024-11-07 11:24:18,696 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 5 predicate places. [2024-11-07 11:24:18,696 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 0 transitions, 0 flow [2024-11-07 11:24:18,696 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:24:18,698 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2024-11-07 11:24:18,699 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2024-11-07 11:24:18,700 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-11-07 11:24:18,700 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-11-07 11:24:18,700 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-07 11:24:18,700 INFO L407 BasicCegarLoop]: Path program histogram: [6] [2024-11-07 11:24:18,703 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-07 11:24:18,703 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-07 11:24:18,711 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 11:24:18 BasicIcfg [2024-11-07 11:24:18,712 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-07 11:24:18,712 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-07 11:24:18,712 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-07 11:24:18,713 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-07 11:24:18,714 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 11:24:10" (3/4) ... [2024-11-07 11:24:18,715 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-07 11:24:18,718 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-11-07 11:24:18,718 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-11-07 11:24:18,718 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2024-11-07 11:24:18,721 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 78 nodes and edges [2024-11-07 11:24:18,723 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2024-11-07 11:24:18,723 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2024-11-07 11:24:18,723 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-11-07 11:24:18,794 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-07 11:24:18,794 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-07 11:24:18,794 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-07 11:24:18,795 INFO L158 Benchmark]: Toolchain (without parser) took 9604.13ms. Allocated memory was 100.7MB in the beginning and 285.2MB in the end (delta: 184.5MB). Free memory was 76.5MB in the beginning and 214.1MB in the end (delta: -137.6MB). Peak memory consumption was 43.8MB. Max. memory is 16.1GB. [2024-11-07 11:24:18,796 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 83.9MB. Free memory is still 48.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-07 11:24:18,796 INFO L158 Benchmark]: CACSL2BoogieTranslator took 243.68ms. Allocated memory is still 100.7MB. Free memory was 76.4MB in the beginning and 64.7MB in the end (delta: 11.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-07 11:24:18,796 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.65ms. Allocated memory is still 100.7MB. Free memory was 64.5MB in the beginning and 62.6MB in the end (delta: 1.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-07 11:24:18,797 INFO L158 Benchmark]: Boogie Preprocessor took 75.23ms. Allocated memory is still 100.7MB. Free memory was 62.6MB in the beginning and 60.6MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-07 11:24:18,798 INFO L158 Benchmark]: RCFGBuilder took 883.17ms. Allocated memory is still 100.7MB. Free memory was 60.5MB in the beginning and 61.1MB in the end (delta: -635.7kB). Peak memory consumption was 30.9MB. Max. memory is 16.1GB. [2024-11-07 11:24:18,800 INFO L158 Benchmark]: TraceAbstraction took 8259.86ms. Allocated memory was 100.7MB in the beginning and 285.2MB in the end (delta: 184.5MB). Free memory was 60.6MB in the beginning and 217.4MB in the end (delta: -156.8MB). Peak memory consumption was 29.6MB. Max. memory is 16.1GB. [2024-11-07 11:24:18,800 INFO L158 Benchmark]: Witness Printer took 81.99ms. Allocated memory is still 285.2MB. Free memory was 217.4MB in the beginning and 214.1MB in the end (delta: 3.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-07 11:24:18,801 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 83.9MB. Free memory is still 48.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 243.68ms. Allocated memory is still 100.7MB. Free memory was 76.4MB in the beginning and 64.7MB in the end (delta: 11.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 53.65ms. Allocated memory is still 100.7MB. Free memory was 64.5MB in the beginning and 62.6MB in the end (delta: 1.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 75.23ms. Allocated memory is still 100.7MB. Free memory was 62.6MB in the beginning and 60.6MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 883.17ms. Allocated memory is still 100.7MB. Free memory was 60.5MB in the beginning and 61.1MB in the end (delta: -635.7kB). Peak memory consumption was 30.9MB. Max. memory is 16.1GB. * TraceAbstraction took 8259.86ms. Allocated memory was 100.7MB in the beginning and 285.2MB in the end (delta: 184.5MB). Free memory was 60.6MB in the beginning and 217.4MB in the end (delta: -156.8MB). Peak memory consumption was 29.6MB. Max. memory is 16.1GB. * Witness Printer took 81.99ms. Allocated memory is still 285.2MB. Free memory was 217.4MB in the beginning and 214.1MB in the end (delta: 3.2MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 93]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 41 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 8.1s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 123 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 123 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 604 IncrementalHoareTripleChecker+Invalid, 604 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 0 mSDtfsCounter, 604 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 42 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=93occurred in iteration=4, InterpolantAutomatonStates: 30, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 5.6s InterpolantComputationTime, 126 NumberOfCodeBlocks, 126 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 120 ConstructedInterpolants, 0 QuantifiedInterpolants, 4120 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-07 11:24:18,826 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE