./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/parallel-bakery-4.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_f11b3313-0518-4bb4-b896-7aaef9b2cb32/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11b3313-0518-4bb4-b896-7aaef9b2cb32/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_f11b3313-0518-4bb4-b896-7aaef9b2cb32/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11b3313-0518-4bb4-b896-7aaef9b2cb32/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-bakery-4.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11b3313-0518-4bb4-b896-7aaef9b2cb32/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_f11b3313-0518-4bb4-b896-7aaef9b2cb32/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 a42fdc99fbc54512a7829bd297e0f02fe251a511098f304812399f6e9de1d8b6 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:48:05,067 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:48:05,139 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11b3313-0518-4bb4-b896-7aaef9b2cb32/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-19 07:48:05,146 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:48:05,147 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:48:05,173 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:48:05,174 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:48:05,175 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:48:05,176 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:48:05,176 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:48:05,177 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:48:05,178 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:48:05,179 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:48:05,180 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:48:05,180 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:48:05,181 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:48:05,181 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:48:05,182 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:48:05,183 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:48:05,183 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:48:05,184 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:48:05,185 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:48:05,185 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 07:48:05,186 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:48:05,186 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:48:05,187 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:48:05,187 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:48:05,188 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:48:05,189 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:48:05,189 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:48:05,190 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:48:05,190 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:48:05,191 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:48:05,191 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:48:05,192 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:48:05,193 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:48:05,193 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:48:05,194 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:48:05,194 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:48:05,195 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:48:05,195 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:48:05,196 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_f11b3313-0518-4bb4-b896-7aaef9b2cb32/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11b3313-0518-4bb4-b896-7aaef9b2cb32/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a42fdc99fbc54512a7829bd297e0f02fe251a511098f304812399f6e9de1d8b6 [2023-11-19 07:48:05,544 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:48:05,575 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:48:05,578 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:48:05,579 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:48:05,580 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:48:05,581 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11b3313-0518-4bb4-b896-7aaef9b2cb32/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/weaver/parallel-bakery-4.wvr.c [2023-11-19 07:48:08,811 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:48:09,114 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:48:09,114 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11b3313-0518-4bb4-b896-7aaef9b2cb32/sv-benchmarks/c/weaver/parallel-bakery-4.wvr.c [2023-11-19 07:48:09,131 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11b3313-0518-4bb4-b896-7aaef9b2cb32/bin/uautomizer-verify-uCwYo4JHxu/data/b474159d3/e7bb49491fcd4324b07ada1fc9842792/FLAG4eb8717bf [2023-11-19 07:48:09,155 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11b3313-0518-4bb4-b896-7aaef9b2cb32/bin/uautomizer-verify-uCwYo4JHxu/data/b474159d3/e7bb49491fcd4324b07ada1fc9842792 [2023-11-19 07:48:09,162 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:48:09,165 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:48:09,170 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:48:09,170 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:48:09,175 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:48:09,176 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:48:09" (1/1) ... [2023-11-19 07:48:09,177 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e425a54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:09, skipping insertion in model container [2023-11-19 07:48:09,178 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:48:09" (1/1) ... [2023-11-19 07:48:09,230 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:48:09,541 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:48:09,556 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:48:09,608 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:48:09,620 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:48:09,621 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:48:09,629 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:48:09,630 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:09 WrapperNode [2023-11-19 07:48:09,630 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:48:09,632 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:48:09,633 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:48:09,633 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:48:09,641 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:09" (1/1) ... [2023-11-19 07:48:09,652 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:09" (1/1) ... [2023-11-19 07:48:09,700 INFO L138 Inliner]: procedures = 23, calls = 177, calls flagged for inlining = 29, calls inlined = 29, statements flattened = 426 [2023-11-19 07:48:09,701 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:48:09,702 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:48:09,702 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:48:09,702 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:48:09,711 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:09" (1/1) ... [2023-11-19 07:48:09,712 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:09" (1/1) ... [2023-11-19 07:48:09,717 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:09" (1/1) ... [2023-11-19 07:48:09,717 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:09" (1/1) ... [2023-11-19 07:48:09,729 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:09" (1/1) ... [2023-11-19 07:48:09,732 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:09" (1/1) ... [2023-11-19 07:48:09,735 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:09" (1/1) ... [2023-11-19 07:48:09,738 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:09" (1/1) ... [2023-11-19 07:48:09,743 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:48:09,744 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:48:09,744 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:48:09,744 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:48:09,745 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:09" (1/1) ... [2023-11-19 07:48:09,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:48:09,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11b3313-0518-4bb4-b896-7aaef9b2cb32/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:48:09,794 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11b3313-0518-4bb4-b896-7aaef9b2cb32/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:48:09,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11b3313-0518-4bb4-b896-7aaef9b2cb32/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:48:09,841 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:48:09,842 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-19 07:48:09,842 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-19 07:48:09,842 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-19 07:48:09,842 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-19 07:48:09,842 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-19 07:48:09,843 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-19 07:48:09,843 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-11-19 07:48:09,843 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-11-19 07:48:09,843 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:48:09,843 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:48:09,844 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:48:09,845 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 07:48:09,846 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 07:48:09,846 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:48:09,846 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:48:09,846 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:48:09,847 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:48:09,848 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 07:48:09,975 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:48:09,978 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:48:10,549 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:48:10,873 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:48:10,873 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 07:48:10,882 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:48:10 BoogieIcfgContainer [2023-11-19 07:48:10,882 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:48:10,886 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:48:10,886 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:48:10,897 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:48:10,898 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:48:09" (1/3) ... [2023-11-19 07:48:10,899 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dc68f7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:48:10, skipping insertion in model container [2023-11-19 07:48:10,899 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:09" (2/3) ... [2023-11-19 07:48:10,901 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dc68f7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:48:10, skipping insertion in model container [2023-11-19 07:48:10,901 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:48:10" (3/3) ... [2023-11-19 07:48:10,903 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-bakery-4.wvr.c [2023-11-19 07:48:10,913 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 07:48:10,923 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:48:10,924 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2023-11-19 07:48:10,924 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:48:11,030 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-19 07:48:11,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 244 places, 233 transitions, 494 flow [2023-11-19 07:48:11,301 INFO L124 PetriNetUnfolderBase]: 2/229 cut-off events. [2023-11-19 07:48:11,301 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-19 07:48:11,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 246 conditions, 229 events. 2/229 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 303 event pairs, 0 based on Foata normal form. 0/211 useless extension candidates. Maximal degree in co-relation 174. Up to 2 conditions per place. [2023-11-19 07:48:11,307 INFO L82 GeneralOperation]: Start removeDead. Operand has 244 places, 233 transitions, 494 flow [2023-11-19 07:48:11,322 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 215 places, 203 transitions, 427 flow [2023-11-19 07:48:11,326 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:48:11,352 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 215 places, 203 transitions, 427 flow [2023-11-19 07:48:11,357 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 215 places, 203 transitions, 427 flow [2023-11-19 07:48:11,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 215 places, 203 transitions, 427 flow [2023-11-19 07:48:11,418 INFO L124 PetriNetUnfolderBase]: 1/203 cut-off events. [2023-11-19 07:48:11,418 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-19 07:48:11,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 219 conditions, 203 events. 1/203 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 301 event pairs, 0 based on Foata normal form. 0/186 useless extension candidates. Maximal degree in co-relation 174. Up to 2 conditions per place. [2023-11-19 07:48:11,425 INFO L119 LiptonReduction]: Number of co-enabled transitions 8712 [2023-11-19 07:48:19,150 INFO L134 LiptonReduction]: Checked pairs total: 92372 [2023-11-19 07:48:19,150 INFO L136 LiptonReduction]: Total number of compositions: 135 [2023-11-19 07:48:19,175 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:48:19,188 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;@12019071, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:48:19,188 INFO L358 AbstractCegarLoop]: Starting to check reachability of 36 error locations. [2023-11-19 07:48:19,192 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:48:19,192 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2023-11-19 07:48:19,193 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:48:19,193 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:48:19,194 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 07:48:19,194 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-11-19 07:48:19,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:19,200 INFO L85 PathProgramCache]: Analyzing trace with hash -2046343013, now seen corresponding path program 1 times [2023-11-19 07:48:19,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:19,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953010160] [2023-11-19 07:48:19,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:19,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:19,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:19,885 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 07:48:19,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:19,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953010160] [2023-11-19 07:48:19,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953010160] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:48:19,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:48:19,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:48:19,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680784263] [2023-11-19 07:48:19,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:48:19,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:48:19,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:19,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:48:19,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:48:20,111 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 368 [2023-11-19 07:48:20,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 91 transitions, 203 flow. Second operand has 5 states, 5 states have (on average 164.2) internal successors, (821), 5 states have internal predecessors, (821), 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 07:48:20,119 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:48:20,119 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 368 [2023-11-19 07:48:20,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand