./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/parallel-barrier.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66c58aa-5104-4bb5-9650-cafdcdb410b0/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66c58aa-5104-4bb5-9650-cafdcdb410b0/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66c58aa-5104-4bb5-9650-cafdcdb410b0/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66c58aa-5104-4bb5-9650-cafdcdb410b0/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-barrier.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66c58aa-5104-4bb5-9650-cafdcdb410b0/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66c58aa-5104-4bb5-9650-cafdcdb410b0/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 504de2e820c504d0b98f5b71c19407f1b43c0dd9338639fad4f2fe6ea2f6854f --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:47:12,464 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:47:12,597 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66c58aa-5104-4bb5-9650-cafdcdb410b0/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-19 07:47:12,605 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:47:12,606 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:47:12,652 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:47:12,653 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:47:12,653 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:47:12,654 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:47:12,661 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:47:12,662 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:47:12,663 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:47:12,664 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:47:12,666 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:47:12,666 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:47:12,667 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:47:12,667 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:47:12,668 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:47:12,668 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:47:12,669 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:47:12,669 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:47:12,670 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:47:12,671 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 07:47:12,671 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:47:12,672 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:47:12,672 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:47:12,672 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:47:12,674 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:47:12,674 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:47:12,675 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:47:12,676 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:47:12,677 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:47:12,677 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:47:12,677 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:47:12,678 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:47:12,678 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:47:12,678 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:47:12,679 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:47:12,679 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:47:12,679 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:47:12,679 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:47:12,680 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66c58aa-5104-4bb5-9650-cafdcdb410b0/bin/uautomizer-verify-uCwYo4JHxu/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66c58aa-5104-4bb5-9650-cafdcdb410b0/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 504de2e820c504d0b98f5b71c19407f1b43c0dd9338639fad4f2fe6ea2f6854f [2023-11-19 07:47:13,037 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:47:13,076 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:47:13,079 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:47:13,080 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:47:13,080 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:47:13,082 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66c58aa-5104-4bb5-9650-cafdcdb410b0/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/weaver/parallel-barrier.wvr.c [2023-11-19 07:47:16,288 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:47:16,648 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:47:16,650 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66c58aa-5104-4bb5-9650-cafdcdb410b0/sv-benchmarks/c/weaver/parallel-barrier.wvr.c [2023-11-19 07:47:16,667 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66c58aa-5104-4bb5-9650-cafdcdb410b0/bin/uautomizer-verify-uCwYo4JHxu/data/54bdd5fd3/81df9e91b1ca4082b6363483ae24fb24/FLAG0ddbef2c7 [2023-11-19 07:47:16,688 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66c58aa-5104-4bb5-9650-cafdcdb410b0/bin/uautomizer-verify-uCwYo4JHxu/data/54bdd5fd3/81df9e91b1ca4082b6363483ae24fb24 [2023-11-19 07:47:16,695 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:47:16,697 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:47:16,700 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:47:16,700 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:47:16,706 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:47:16,707 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:47:16" (1/1) ... [2023-11-19 07:47:16,708 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1466acba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:16, skipping insertion in model container [2023-11-19 07:47:16,709 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:47:16" (1/1) ... [2023-11-19 07:47:16,764 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:47:17,034 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:47:17,047 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:47:17,087 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:47:17,097 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:47:17,097 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:47:17,106 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:47:17,107 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:17 WrapperNode [2023-11-19 07:47:17,107 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:47:17,109 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:47:17,109 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:47:17,109 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:47:17,117 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:17" (1/1) ... [2023-11-19 07:47:17,129 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:17" (1/1) ... [2023-11-19 07:47:17,167 INFO L138 Inliner]: procedures = 25, calls = 99, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 288 [2023-11-19 07:47:17,167 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:47:17,168 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:47:17,168 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:47:17,168 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:47:17,179 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:17" (1/1) ... [2023-11-19 07:47:17,179 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:17" (1/1) ... [2023-11-19 07:47:17,184 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:17" (1/1) ... [2023-11-19 07:47:17,185 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:17" (1/1) ... [2023-11-19 07:47:17,195 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:17" (1/1) ... [2023-11-19 07:47:17,198 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:17" (1/1) ... [2023-11-19 07:47:17,216 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:17" (1/1) ... [2023-11-19 07:47:17,219 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:17" (1/1) ... [2023-11-19 07:47:17,223 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:47:17,224 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:47:17,225 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:47:17,225 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:47:17,226 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:17" (1/1) ... [2023-11-19 07:47:17,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:47:17,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66c58aa-5104-4bb5-9650-cafdcdb410b0/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:17,265 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66c58aa-5104-4bb5-9650-cafdcdb410b0/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:47:17,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66c58aa-5104-4bb5-9650-cafdcdb410b0/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:47:17,316 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:47:17,316 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:47:17,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:47:17,317 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:47:17,317 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-19 07:47:17,317 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-19 07:47:17,317 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-19 07:47:17,318 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-19 07:47:17,318 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-19 07:47:17,318 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-19 07:47:17,318 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-11-19 07:47:17,319 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-11-19 07:47:17,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:47:17,322 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2023-11-19 07:47:17,322 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2023-11-19 07:47:17,322 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2023-11-19 07:47:17,323 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2023-11-19 07:47:17,323 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 07:47:17,323 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 07:47:17,323 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:47:17,324 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:47:17,324 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:47:17,327 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 07:47:17,534 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:47:17,542 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:47:18,163 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:47:18,327 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:47:18,328 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 07:47:18,338 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:47:18 BoogieIcfgContainer [2023-11-19 07:47:18,338 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:47:18,342 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:47:18,342 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:47:18,346 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:47:18,347 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:47:16" (1/3) ... [2023-11-19 07:47:18,348 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37142ccd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:47:18, skipping insertion in model container [2023-11-19 07:47:18,348 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:17" (2/3) ... [2023-11-19 07:47:18,349 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37142ccd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:47:18, skipping insertion in model container [2023-11-19 07:47:18,350 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:47:18" (3/3) ... [2023-11-19 07:47:18,351 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-barrier.wvr.c [2023-11-19 07:47:18,361 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 07:47:18,373 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:47:18,373 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2023-11-19 07:47:18,374 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:47:18,560 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2023-11-19 07:47:18,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 278 places, 267 transitions, 600 flow [2023-11-19 07:47:18,730 INFO L124 PetriNetUnfolderBase]: 8/239 cut-off events. [2023-11-19 07:47:18,730 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-19 07:47:18,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 268 conditions, 239 events. 8/239 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 342 event pairs, 0 based on Foata normal form. 0/215 useless extension candidates. Maximal degree in co-relation 202. Up to 3 conditions per place. [2023-11-19 07:47:18,739 INFO L82 GeneralOperation]: Start removeDead. Operand has 278 places, 267 transitions, 600 flow [2023-11-19 07:47:18,747 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 229 places, 217 transitions, 479 flow [2023-11-19 07:47:18,751 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:47:18,761 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 229 places, 217 transitions, 479 flow [2023-11-19 07:47:18,765 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 229 places, 217 transitions, 479 flow [2023-11-19 07:47:18,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 229 places, 217 transitions, 479 flow [2023-11-19 07:47:18,829 INFO L124 PetriNetUnfolderBase]: 7/217 cut-off events. [2023-11-19 07:47:18,829 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-11-19 07:47:18,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 245 conditions, 217 events. 7/217 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 341 event pairs, 0 based on Foata normal form. 0/194 useless extension candidates. Maximal degree in co-relation 202. Up to 3 conditions per place. [2023-11-19 07:47:18,845 INFO L119 LiptonReduction]: Number of co-enabled transitions 11336 [2023-11-19 07:47:24,991 INFO L134 LiptonReduction]: Checked pairs total: 75679 [2023-11-19 07:47:24,992 INFO L136 LiptonReduction]: Total number of compositions: 160 [2023-11-19 07:47:25,009 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:47:25,016 INFO L357 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, mHoare=true, 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;@49c0c642, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:47:25,017 INFO L358 AbstractCegarLoop]: Starting to check reachability of 42 error locations. [2023-11-19 07:47:25,025 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:47:25,025 INFO L124 PetriNetUnfolderBase]: 0/17 cut-off events. [2023-11-19 07:47:25,025 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:47:25,025 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:47:25,026 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:25,027 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err7INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-19 07:47:25,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:25,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1016110506, now seen corresponding path program 1 times [2023-11-19 07:47:25,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:25,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642546678] [2023-11-19 07:47:25,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:25,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:25,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:25,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:47:25,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:25,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642546678] [2023-11-19 07:47:25,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642546678] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:25,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:25,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:47:25,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800210757] [2023-11-19 07:47:25,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:25,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:47:25,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:25,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:47:25,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:47:25,581 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 431 [2023-11-19 07:47:25,589 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 91 transitions, 227 flow. Second operand has 3 states, 3 states have (on average 214.33333333333334) internal successors, (643), 3 states have internal predecessors, (643), 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) [2023-11-19 07:47:25,590 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:47:25,590 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 431 [2023-11-19 07:47:25,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:47:58,793 INFO L124 PetriNetUnfolderBase]: 247042/336447 cut-off events. [2023-11-19 07:47:58,793 INFO L125 PetriNetUnfolderBase]: For 25018/25018 co-relation queries the response was YES. [2023-11-19 07:47:59,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 674429 conditions, 336447 events. 247042/336447 cut-off events. For 25018/25018 co-relation queries the response was YES. Maximal size of possible extension queue 9200. Compared 2434527 event pairs, 240278 based on Foata normal form. 320/263335 useless extension candidates. Maximal degree in co-relation 671598. Up to 310401 conditions per place. [2023-11-19 07:48:01,622 INFO L140 encePairwiseOnDemand]: 427/431 looper letters, 63 selfloop transitions, 1 changer transitions 0/88 dead transitions. [2023-11-19 07:48:01,623 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 88 transitions, 349 flow [2023-11-19 07:48:01,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:48:01,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:48:01,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 703 transitions. [2023-11-19 07:48:01,646 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5436968290796597 [2023-11-19 07:48:01,647 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 703 transitions. [2023-11-19 07:48:01,647 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 703 transitions. [2023-11-19 07:48:01,651 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:48:01,654 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 703 transitions. [2023-11-19 07:48:01,662 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 234.33333333333334) internal successors, (703), 3 states have internal predecessors, (703), 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) [2023-11-19 07:48:01,671 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 431.0) internal successors, (1724), 4 states have internal predecessors, (1724), 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) [2023-11-19 07:48:01,673 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 431.0) internal successors, (1724), 4 states have internal predecessors, (1724), 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) [2023-11-19 07:48:01,675 INFO L175 Difference]: Start difference. First operand has 105 places, 91 transitions, 227 flow. Second operand 3 states and 703 transitions. [2023-11-19 07:48:01,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 88 transitions, 349 flow