./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_20-callback_racefree.i --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/goblint-regression/28-race_reach_20-callback_racefree.i', '-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', '4e91816f101a416d37c086dd7185cfb4e2bfa63eb286e4a418cb94db27cf2f6f'] 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/goblint-regression/28-race_reach_20-callback_racefree.i -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 4e91816f101a416d37c086dd7185cfb4e2bfa63eb286e4a418cb94db27cf2f6f --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-07 11:18:50,200 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-07 11:18:50,282 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-07 11:18:50,288 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-07 11:18:50,289 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-07 11:18:50,314 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-07 11:18:50,315 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-07 11:18:50,315 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-07 11:18:50,316 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-07 11:18:50,316 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-07 11:18:50,316 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-07 11:18:50,316 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-07 11:18:50,317 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-07 11:18:50,317 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-07 11:18:50,317 INFO L153 SettingsManager]: * Use SBE=true [2024-11-07 11:18:50,317 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-07 11:18:50,318 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-07 11:18:50,318 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-07 11:18:50,318 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-07 11:18:50,318 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-07 11:18:50,318 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-07 11:18:50,318 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-07 11:18:50,318 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-07 11:18:50,318 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-07 11:18:50,318 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-07 11:18:50,319 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-07 11:18:50,319 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-07 11:18:50,319 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-07 11:18:50,319 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-07 11:18:50,319 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-07 11:18:50,319 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-07 11:18:50,319 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-07 11:18:50,320 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 11:18:50,320 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-07 11:18:50,320 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-07 11:18:50,320 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-07 11:18:50,320 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-07 11:18:50,321 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-07 11:18:50,321 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-07 11:18:50,321 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-07 11:18:50,321 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-07 11:18:50,321 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-07 11:18:50,321 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 -> 4e91816f101a416d37c086dd7185cfb4e2bfa63eb286e4a418cb94db27cf2f6f [2024-11-07 11:18:50,587 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-07 11:18:50,593 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-07 11:18:50,595 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-07 11:18:50,596 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-07 11:18:50,596 INFO L274 PluginConnector]: CDTParser initialized [2024-11-07 11:18:50,598 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_20-callback_racefree.i [2024-11-07 11:18:51,721 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-07 11:18:52,025 INFO L384 CDTParser]: Found 1 translation units. [2024-11-07 11:18:52,027 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_20-callback_racefree.i [2024-11-07 11:18:52,041 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/3cea15f60/675b2a9e0ab7452581786ffd2c1007eb/FLAGdb78bccff [2024-11-07 11:18:52,299 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/3cea15f60/675b2a9e0ab7452581786ffd2c1007eb [2024-11-07 11:18:52,301 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-07 11:18:52,303 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-07 11:18:52,304 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-07 11:18:52,304 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-07 11:18:52,307 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-07 11:18:52,307 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 11:18:52" (1/1) ... [2024-11-07 11:18:52,308 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10b5ee1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:18:52, skipping insertion in model container [2024-11-07 11:18:52,308 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 11:18:52" (1/1) ... [2024-11-07 11:18:52,330 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-07 11:18:52,521 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/goblint-regression/28-race_reach_20-callback_racefree.i[30212,30225] [2024-11-07 11:18:52,539 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 11:18:52,556 INFO L200 MainTranslator]: Completed pre-run [2024-11-07 11:18:52,585 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/goblint-regression/28-race_reach_20-callback_racefree.i[30212,30225] [2024-11-07 11:18:52,598 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 11:18:52,627 INFO L204 MainTranslator]: Completed translation [2024-11-07 11:18:52,628 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:18:52 WrapperNode [2024-11-07 11:18:52,628 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-07 11:18:52,629 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-07 11:18:52,630 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-07 11:18:52,630 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-07 11:18:52,636 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:18:52" (1/1) ... [2024-11-07 11:18:52,646 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:18:52" (1/1) ... [2024-11-07 11:18:52,665 INFO L138 Inliner]: procedures = 174, calls = 38, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 195 [2024-11-07 11:18:52,665 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-07 11:18:52,666 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-07 11:18:52,666 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-07 11:18:52,666 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-07 11:18:52,676 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:18:52" (1/1) ... [2024-11-07 11:18:52,677 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:18:52" (1/1) ... [2024-11-07 11:18:52,682 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:18:52" (1/1) ... [2024-11-07 11:18:52,699 INFO L175 MemorySlicer]: Split 14 memory accesses to 4 slices as follows [2, 2, 5, 5]. 36 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 0, 5, 5]. The 1 writes are split as follows [0, 1, 0, 0]. [2024-11-07 11:18:52,700 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:18:52" (1/1) ... [2024-11-07 11:18:52,700 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:18:52" (1/1) ... [2024-11-07 11:18:52,705 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:18:52" (1/1) ... [2024-11-07 11:18:52,708 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:18:52" (1/1) ... [2024-11-07 11:18:52,709 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:18:52" (1/1) ... [2024-11-07 11:18:52,710 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:18:52" (1/1) ... [2024-11-07 11:18:52,712 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-07 11:18:52,713 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-07 11:18:52,713 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-07 11:18:52,713 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-07 11:18:52,714 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:18:52" (1/1) ... [2024-11-07 11:18:52,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 11:18:52,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:18:52,740 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 11:18:52,742 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 11:18:52,766 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-07 11:18:52,766 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-07 11:18:52,766 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-07 11:18:52,767 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-07 11:18:52,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-07 11:18:52,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-07 11:18:52,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-07 11:18:52,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-07 11:18:52,767 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-07 11:18:52,767 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-07 11:18:52,767 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-07 11:18:52,767 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-07 11:18:52,768 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-07 11:18:52,768 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-07 11:18:52,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-07 11:18:52,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-07 11:18:52,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-07 11:18:52,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-07 11:18:52,768 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-07 11:18:52,768 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-07 11:18:52,768 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-07 11:18:52,770 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 11:18:52,907 INFO L238 CfgBuilder]: Building ICFG [2024-11-07 11:18:52,909 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-07 11:18:53,192 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-07 11:18:53,192 INFO L287 CfgBuilder]: Performing block encoding [2024-11-07 11:18:53,532 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-07 11:18:53,533 INFO L316 CfgBuilder]: Removed 11 assume(true) statements. [2024-11-07 11:18:53,533 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 11:18:53 BoogieIcfgContainer [2024-11-07 11:18:53,534 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-07 11:18:53,536 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-07 11:18:53,536 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-07 11:18:53,540 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-07 11:18:53,540 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 11:18:52" (1/3) ... [2024-11-07 11:18:53,540 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b16c521 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 11:18:53, skipping insertion in model container [2024-11-07 11:18:53,540 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:18:52" (2/3) ... [2024-11-07 11:18:53,540 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b16c521 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 11:18:53, skipping insertion in model container [2024-11-07 11:18:53,541 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 11:18:53" (3/3) ... [2024-11-07 11:18:53,541 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_20-callback_racefree.i [2024-11-07 11:18:53,551 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-07 11:18:53,552 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-07 11:18:53,552 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-07 11:18:53,594 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-07 11:18:53,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 45 places, 54 transitions, 115 flow [2024-11-07 11:18:53,666 INFO L124 PetriNetUnfolderBase]: 20/85 cut-off events. [2024-11-07 11:18:53,669 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-07 11:18:53,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 85 events. 20/85 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 271 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 49. Up to 6 conditions per place. [2024-11-07 11:18:53,674 INFO L82 GeneralOperation]: Start removeDead. Operand has 45 places, 54 transitions, 115 flow [2024-11-07 11:18:53,677 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 44 places, 52 transitions, 108 flow [2024-11-07 11:18:53,686 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 11:18:53,696 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;@433c4204, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 11:18:53,696 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-11-07 11:18:53,706 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-07 11:18:53,707 INFO L124 PetriNetUnfolderBase]: 1/18 cut-off events. [2024-11-07 11:18:53,707 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-07 11:18:53,707 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:18:53,708 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-07 11:18:53,708 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 11:18:53,712 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:18:53,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1769805341, now seen corresponding path program 1 times [2024-11-07 11:18:53,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:18:53,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018086415] [2024-11-07 11:18:53,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:18:53,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:18:53,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-07 11:18:53,853 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-07 11:18:53,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-07 11:18:53,913 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-07 11:18:53,914 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-07 11:18:53,915 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2024-11-07 11:18:53,918 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2024-11-07 11:18:53,918 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2024-11-07 11:18:53,919 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-07 11:18:53,919 INFO L407 BasicCegarLoop]: Path program histogram: [1] [2024-11-07 11:18:53,925 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-07 11:18:53,925 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-07 11:18:53,946 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-07 11:18:53,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 62 places, 73 transitions, 162 flow [2024-11-07 11:18:53,972 INFO L124 PetriNetUnfolderBase]: 33/142 cut-off events. [2024-11-07 11:18:53,973 INFO L125 PetriNetUnfolderBase]: For 6/7 co-relation queries the response was YES. [2024-11-07 11:18:53,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154 conditions, 142 events. 33/142 cut-off events. For 6/7 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 576 event pairs, 0 based on Foata normal form. 0/103 useless extension candidates. Maximal degree in co-relation 89. Up to 9 conditions per place. [2024-11-07 11:18:53,974 INFO L82 GeneralOperation]: Start removeDead. Operand has 62 places, 73 transitions, 162 flow [2024-11-07 11:18:53,975 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 62 places, 73 transitions, 162 flow [2024-11-07 11:18:53,976 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 11:18:53,977 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;@433c4204, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 11:18:53,977 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-07 11:18:53,986 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-07 11:18:53,986 INFO L124 PetriNetUnfolderBase]: 4/48 cut-off events. [2024-11-07 11:18:53,986 INFO L125 PetriNetUnfolderBase]: For 3/4 co-relation queries the response was YES. [2024-11-07 11:18:53,987 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:18:53,987 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2024-11-07 11:18:53,987 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-11-07 11:18:53,987 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:18:53,987 INFO L85 PathProgramCache]: Analyzing trace with hash 755159264, now seen corresponding path program 1 times [2024-11-07 11:18:53,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:18:53,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985729836] [2024-11-07 11:18:53,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:18:53,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:18:54,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-07 11:18:54,069 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-07 11:18:54,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-07 11:18:54,120 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-07 11:18:54,120 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-07 11:18:54,121 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2024-11-07 11:18:54,121 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2024-11-07 11:18:54,121 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2024-11-07 11:18:54,121 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2024-11-07 11:18:54,121 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-07 11:18:54,121 INFO L407 BasicCegarLoop]: Path program histogram: [1] [2024-11-07 11:18:54,122 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-07 11:18:54,122 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-07 11:18:54,151 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-07 11:18:54,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 79 places, 92 transitions, 211 flow [2024-11-07 11:18:54,199 INFO L124 PetriNetUnfolderBase]: 49/210 cut-off events. [2024-11-07 11:18:54,199 INFO L125 PetriNetUnfolderBase]: For 19/21 co-relation queries the response was YES. [2024-11-07 11:18:54,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 235 conditions, 210 events. 49/210 cut-off events. For 19/21 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 927 event pairs, 1 based on Foata normal form. 0/154 useless extension candidates. Maximal degree in co-relation 153. Up to 12 conditions per place. [2024-11-07 11:18:54,205 INFO L82 GeneralOperation]: Start removeDead. Operand has 79 places, 92 transitions, 211 flow [2024-11-07 11:18:54,207 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 79 places, 92 transitions, 211 flow [2024-11-07 11:18:54,208 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 11:18:54,210 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;@433c4204, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 11:18:54,211 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-07 11:18:54,221 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-07 11:18:54,221 INFO L124 PetriNetUnfolderBase]: 6/57 cut-off events. [2024-11-07 11:18:54,221 INFO L125 PetriNetUnfolderBase]: For 5/6 co-relation queries the response was YES. [2024-11-07 11:18:54,222 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:18:54,222 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:18:54,222 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-07 11:18:54,222 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:18:54,222 INFO L85 PathProgramCache]: Analyzing trace with hash -981082608, now seen corresponding path program 1 times [2024-11-07 11:18:54,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:18:54,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898352527] [2024-11-07 11:18:54,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:18:54,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:18:54,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:18:54,466 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 11:18:54,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:18:54,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898352527] [2024-11-07 11:18:54,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898352527] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:18:54,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:18:54,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 11:18:54,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435355441] [2024-11-07 11:18:54,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:18:54,478 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 11:18:54,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:18:54,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 11:18:54,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 11:18:54,506 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 92 [2024-11-07 11:18:54,510 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 92 transitions, 211 flow. Second operand has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 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 11:18:54,510 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:18:54,511 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 92 [2024-11-07 11:18:54,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:19:00,046 INFO L124 PetriNetUnfolderBase]: 54674/85793 cut-off events. [2024-11-07 11:19:00,046 INFO L125 PetriNetUnfolderBase]: For 1238/1238 co-relation queries the response was YES. [2024-11-07 11:19:00,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162764 conditions, 85793 events. 54674/85793 cut-off events. For 1238/1238 co-relation queries the response was YES. Maximal size of possible extension queue 1670. Compared 710051 event pairs, 17942 based on Foata normal form. 16640/94297 useless extension candidates. Maximal degree in co-relation 44212. Up to 37812 conditions per place. [2024-11-07 11:19:00,534 INFO L140 encePairwiseOnDemand]: 71/92 looper letters, 145 selfloop transitions, 7 changer transitions 0/179 dead transitions. [2024-11-07 11:19:00,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 179 transitions, 722 flow [2024-11-07 11:19:00,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 11:19:00,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 11:19:00,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 334 transitions. [2024-11-07 11:19:00,549 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7260869565217392 [2024-11-07 11:19:00,550 INFO L175 Difference]: Start difference. First operand has 79 places, 92 transitions, 211 flow. Second operand 5 states and 334 transitions. [2024-11-07 11:19:00,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 179 transitions, 722 flow [2024-11-07 11:19:00,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 179 transitions, 722 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-07 11:19:00,566 INFO L231 Difference]: Finished difference. Result has 87 places, 82 transitions, 231 flow [2024-11-07 11:19:00,568 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=231, PETRI_PLACES=87, PETRI_TRANSITIONS=82} [2024-11-07 11:19:00,571 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 8 predicate places. [2024-11-07 11:19:00,571 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 82 transitions, 231 flow [2024-11-07 11:19:00,571 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 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 11:19:00,571 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:19:00,571 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2024-11-07 11:19:00,572 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-07 11:19:00,572 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-07 11:19:00,572 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:19:00,572 INFO L85 PathProgramCache]: Analyzing trace with hash 164907170, now seen corresponding path program 1 times [2024-11-07 11:19:00,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:19:00,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681354936] [2024-11-07 11:19:00,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:19:00,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:19:00,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-07 11:19:00,622 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-07 11:19:00,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-07 11:19:00,649 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-07 11:19:00,651 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-07 11:19:00,651 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2024-11-07 11:19:00,651 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2024-11-07 11:19:00,652 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2024-11-07 11:19:00,652 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2024-11-07 11:19:00,652 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2024-11-07 11:19:00,652 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-07 11:19:00,652 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-07 11:19:00,652 WARN L244 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-07 11:19:00,652 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-11-07 11:19:00,676 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-07 11:19:00,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 96 places, 111 transitions, 262 flow [2024-11-07 11:19:00,703 INFO L124 PetriNetUnfolderBase]: 73/302 cut-off events. [2024-11-07 11:19:00,703 INFO L125 PetriNetUnfolderBase]: For 48/51 co-relation queries the response was YES. [2024-11-07 11:19:00,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 353 conditions, 302 events. 73/302 cut-off events. For 48/51 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1419 event pairs, 6 based on Foata normal form. 0/225 useless extension candidates. Maximal degree in co-relation 234. Up to 32 conditions per place. [2024-11-07 11:19:00,705 INFO L82 GeneralOperation]: Start removeDead. Operand has 96 places, 111 transitions, 262 flow [2024-11-07 11:19:00,708 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 96 places, 111 transitions, 262 flow [2024-11-07 11:19:00,709 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 11:19:00,709 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;@433c4204, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 11:19:00,709 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-07 11:19:00,713 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-07 11:19:00,713 INFO L124 PetriNetUnfolderBase]: 7/68 cut-off events. [2024-11-07 11:19:00,713 INFO L125 PetriNetUnfolderBase]: For 6/8 co-relation queries the response was YES. [2024-11-07 11:19:00,713 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:19:00,713 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:19:00,713 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-11-07 11:19:00,714 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:19:00,714 INFO L85 PathProgramCache]: Analyzing trace with hash 1081232368, now seen corresponding path program 1 times [2024-11-07 11:19:00,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:19:00,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752882882] [2024-11-07 11:19:00,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:19:00,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:19:00,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:19:00,819 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 11:19:00,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:19:00,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752882882] [2024-11-07 11:19:00,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752882882] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:19:00,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:19:00,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 11:19:00,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935809796] [2024-11-07 11:19:00,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:19:00,820 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 11:19:00,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:19:00,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 11:19:00,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 11:19:00,823 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 111 [2024-11-07 11:19:00,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 111 transitions, 262 flow. Second operand has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 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 11:19:00,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:19:00,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 111 [2024-11-07 11:19:00,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand