./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 e7bb482b 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_46c1d8b6-39a6-449a-8f6e-cc74ccba9d62/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46c1d8b6-39a6-449a-8f6e-cc74ccba9d62/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46c1d8b6-39a6-449a-8f6e-cc74ccba9d62/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46c1d8b6-39a6-449a-8f6e-cc74ccba9d62/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-barrier.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46c1d8b6-39a6-449a-8f6e-cc74ccba9d62/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46c1d8b6-39a6-449a-8f6e-cc74ccba9d62/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --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 22b51332425cd14048935a20a73abea0065b1633fac56d6d6be511ab67585236 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 23:07:46,797 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 23:07:46,866 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46c1d8b6-39a6-449a-8f6e-cc74ccba9d62/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-06 23:07:46,872 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 23:07:46,872 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 23:07:46,897 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 23:07:46,898 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 23:07:46,899 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 23:07:46,900 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 23:07:46,901 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 23:07:46,902 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 23:07:46,902 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 23:07:46,903 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 23:07:46,903 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 23:07:46,904 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 23:07:46,905 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 23:07:46,905 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 23:07:46,906 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 23:07:46,906 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 23:07:46,907 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 23:07:46,907 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 23:07:46,908 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 23:07:46,909 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-06 23:07:46,909 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 23:07:46,910 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 23:07:46,910 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 23:07:46,911 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 23:07:46,912 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 23:07:46,912 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 23:07:46,913 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 23:07:46,914 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 23:07:46,914 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 23:07:46,915 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 23:07:46,915 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 23:07:46,916 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 23:07:46,916 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 23:07:46,917 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 23:07:46,917 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 23:07:46,918 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 23:07:46,918 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 23:07:46,918 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 23:07:46,919 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_46c1d8b6-39a6-449a-8f6e-cc74ccba9d62/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46c1d8b6-39a6-449a-8f6e-cc74ccba9d62/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 22b51332425cd14048935a20a73abea0065b1633fac56d6d6be511ab67585236 [2023-11-06 23:07:47,255 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 23:07:47,290 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 23:07:47,293 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 23:07:47,294 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 23:07:47,295 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 23:07:47,296 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46c1d8b6-39a6-449a-8f6e-cc74ccba9d62/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/weaver/parallel-barrier.wvr.c [2023-11-06 23:07:50,452 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 23:07:50,660 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 23:07:50,660 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46c1d8b6-39a6-449a-8f6e-cc74ccba9d62/sv-benchmarks/c/weaver/parallel-barrier.wvr.c [2023-11-06 23:07:50,670 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46c1d8b6-39a6-449a-8f6e-cc74ccba9d62/bin/uautomizer-verify-WvqO1wxjHP/data/e54bed89f/bad44023f521471596a599e8b8d94001/FLAG03ffb010a [2023-11-06 23:07:50,686 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46c1d8b6-39a6-449a-8f6e-cc74ccba9d62/bin/uautomizer-verify-WvqO1wxjHP/data/e54bed89f/bad44023f521471596a599e8b8d94001 [2023-11-06 23:07:50,688 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 23:07:50,690 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 23:07:50,691 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 23:07:50,692 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 23:07:50,701 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 23:07:50,702 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:07:50" (1/1) ... [2023-11-06 23:07:50,706 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ba679f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:50, skipping insertion in model container [2023-11-06 23:07:50,707 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:07:50" (1/1) ... [2023-11-06 23:07:50,744 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 23:07:51,031 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:07:51,050 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 23:07:51,099 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:07:51,109 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 23:07:51,110 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 23:07:51,119 INFO L206 MainTranslator]: Completed translation [2023-11-06 23:07:51,119 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:51 WrapperNode [2023-11-06 23:07:51,119 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 23:07:51,121 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 23:07:51,121 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 23:07:51,121 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 23:07:51,130 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:51" (1/1) ... [2023-11-06 23:07:51,142 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:51" (1/1) ... [2023-11-06 23:07:51,184 INFO L138 Inliner]: procedures = 25, calls = 99, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 282 [2023-11-06 23:07:51,184 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 23:07:51,185 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 23:07:51,185 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 23:07:51,185 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 23:07:51,195 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:51" (1/1) ... [2023-11-06 23:07:51,196 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:51" (1/1) ... [2023-11-06 23:07:51,201 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:51" (1/1) ... [2023-11-06 23:07:51,202 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:51" (1/1) ... [2023-11-06 23:07:51,212 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:51" (1/1) ... [2023-11-06 23:07:51,215 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:51" (1/1) ... [2023-11-06 23:07:51,217 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:51" (1/1) ... [2023-11-06 23:07:51,219 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:51" (1/1) ... [2023-11-06 23:07:51,224 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 23:07:51,225 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 23:07:51,225 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 23:07:51,225 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 23:07:51,227 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:51" (1/1) ... [2023-11-06 23:07:51,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 23:07:51,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46c1d8b6-39a6-449a-8f6e-cc74ccba9d62/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:07:51,264 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46c1d8b6-39a6-449a-8f6e-cc74ccba9d62/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 23:07:51,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46c1d8b6-39a6-449a-8f6e-cc74ccba9d62/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 23:07:51,318 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 23:07:51,319 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 23:07:51,319 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 23:07:51,319 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 23:07:51,319 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-06 23:07:51,319 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-06 23:07:51,320 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-06 23:07:51,320 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-06 23:07:51,320 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-06 23:07:51,320 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-06 23:07:51,320 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-11-06 23:07:51,321 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-11-06 23:07:51,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 23:07:51,324 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2023-11-06 23:07:51,324 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2023-11-06 23:07:51,324 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2023-11-06 23:07:51,325 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2023-11-06 23:07:51,325 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-06 23:07:51,325 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-06 23:07:51,325 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 23:07:51,325 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 23:07:51,326 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 23:07:51,329 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 23:07:51,476 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 23:07:51,478 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 23:07:51,964 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 23:07:52,157 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 23:07:52,158 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-06 23:07:52,161 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:07:52 BoogieIcfgContainer [2023-11-06 23:07:52,161 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 23:07:52,168 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 23:07:52,168 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 23:07:52,173 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 23:07:52,173 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 11:07:50" (1/3) ... [2023-11-06 23:07:52,174 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72d607e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:07:52, skipping insertion in model container [2023-11-06 23:07:52,174 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:51" (2/3) ... [2023-11-06 23:07:52,176 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72d607e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:07:52, skipping insertion in model container [2023-11-06 23:07:52,176 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:07:52" (3/3) ... [2023-11-06 23:07:52,178 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-barrier.wvr.c [2023-11-06 23:07:52,188 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 23:07:52,201 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 23:07:52,201 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2023-11-06 23:07:52,201 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 23:07:52,429 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2023-11-06 23:07:52,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 272 places, 261 transitions, 588 flow [2023-11-06 23:07:52,620 INFO L124 PetriNetUnfolderBase]: 8/233 cut-off events. [2023-11-06 23:07:52,621 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-06 23:07:52,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 262 conditions, 233 events. 8/233 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 327 event pairs, 0 based on Foata normal form. 0/209 useless extension candidates. Maximal degree in co-relation 197. Up to 3 conditions per place. [2023-11-06 23:07:52,630 INFO L82 GeneralOperation]: Start removeDead. Operand has 272 places, 261 transitions, 588 flow [2023-11-06 23:07:52,639 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 223 places, 211 transitions, 467 flow [2023-11-06 23:07:52,643 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 23:07:52,655 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 223 places, 211 transitions, 467 flow [2023-11-06 23:07:52,658 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 223 places, 211 transitions, 467 flow [2023-11-06 23:07:52,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 223 places, 211 transitions, 467 flow [2023-11-06 23:07:52,724 INFO L124 PetriNetUnfolderBase]: 7/211 cut-off events. [2023-11-06 23:07:52,724 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-11-06 23:07:52,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 239 conditions, 211 events. 7/211 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 326 event pairs, 0 based on Foata normal form. 0/188 useless extension candidates. Maximal degree in co-relation 197. Up to 3 conditions per place. [2023-11-06 23:07:52,738 INFO L119 LiptonReduction]: Number of co-enabled transitions 10344 [2023-11-06 23:07:58,452 INFO L134 LiptonReduction]: Checked pairs total: 67025 [2023-11-06 23:07:58,452 INFO L136 LiptonReduction]: Total number of compositions: 148 [2023-11-06 23:07:58,467 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 23:07:58,476 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=LoopsAndPotentialCycles, 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;@31382639, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 23:07:58,476 INFO L358 AbstractCegarLoop]: Starting to check reachability of 42 error locations. [2023-11-06 23:07:58,481 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 23:07:58,482 INFO L124 PetriNetUnfolderBase]: 0/16 cut-off events. [2023-11-06 23:07:58,482 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 23:07:58,482 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:07:58,483 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:07:58,483 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-06 23:07:58,488 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:58,489 INFO L85 PathProgramCache]: Analyzing trace with hash -677185148, now seen corresponding path program 1 times [2023-11-06 23:07:58,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:07:58,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471286875] [2023-11-06 23:07:58,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:58,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:07:58,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:59,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:07:59,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:07:59,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471286875] [2023-11-06 23:07:59,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471286875] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:07:59,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:07:59,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 23:07:59,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609949248] [2023-11-06 23:07:59,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:07:59,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 23:07:59,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:07:59,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 23:07:59,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 23:07:59,152 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 413 [2023-11-06 23:07:59,161 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 89 transitions, 223 flow. Second operand has 4 states, 4 states have (on average 213.5) internal successors, (854), 4 states have internal predecessors, (854), 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) [2023-11-06 23:07:59,161 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:07:59,161 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 413 [2023-11-06 23:07:59,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:08:19,325 INFO L124 PetriNetUnfolderBase]: 149013/202401 cut-off events. [2023-11-06 23:08:19,325 INFO L125 PetriNetUnfolderBase]: For 16408/16408 co-relation queries the response was YES. [2023-11-06 23:08:19,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 409971 conditions, 202401 events. 149013/202401 cut-off events. For 16408/16408 co-relation queries the response was YES. Maximal size of possible extension queue 6030. Compared 1452526 event pairs, 21781 based on Foata normal form. 4452/169805 useless extension candidates. Maximal degree in co-relation 407703. Up to 169561 conditions per place. [2023-11-06 23:08:21,136 INFO L140 encePairwiseOnDemand]: 405/413 looper letters, 122 selfloop transitions, 4 changer transitions 0/156 dead transitions. [2023-11-06 23:08:21,137 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 156 transitions, 654 flow [2023-11-06 23:08:21,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 23:08:21,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 23:08:21,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 978 transitions. [2023-11-06 23:08:21,163 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5920096852300242 [2023-11-06 23:08:21,164 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 978 transitions. [2023-11-06 23:08:21,165 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 978 transitions. [2023-11-06 23:08:21,168 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:08:21,171 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 978 transitions. [2023-11-06 23:08:21,180 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 244.5) internal successors, (978), 4 states have internal predecessors, (978), 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) [2023-11-06 23:08:21,189 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 413.0) internal successors, (2065), 5 states have internal predecessors, (2065), 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) [2023-11-06 23:08:21,191 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 413.0) internal successors, (2065), 5 states have internal predecessors, (2065), 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) [2023-11-06 23:08:21,193 INFO L175 Difference]: Start difference. First operand has 104 places, 89 transitions, 223 flow. Second operand 4 states and 978 transitions. [2023-11-06 23:08:21,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 156 transitions, 654 flow [2023-11-06 23:08:21,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 156 transitions, 597 flow, removed 0 selfloop flow, removed 11 redundant places. [2023-11-06 23:08:21,772 INFO L231 Difference]: Finished difference. Result has 97 places, 91 transitions, 221 flow [2023-11-06 23:08:21,775 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=413, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=221, PETRI_PLACES=97, PETRI_TRANSITIONS=91} [2023-11-06 23:08:21,779 INFO L281 CegarLoopForPetriNet]: 104 programPoint places, -7 predicate places. [2023-11-06 23:08:21,779 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 91 transitions, 221 flow [2023-11-06 23:08:21,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 213.5) internal successors, (854), 4 states have internal predecessors, (854), 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) [2023-11-06 23:08:21,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:08:21,781 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:08:21,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 23:08:21,782 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread5Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-06 23:08:21,782 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:08:21,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1025524891, now seen corresponding path program 1 times [2023-11-06 23:08:21,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:08:21,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594204117] [2023-11-06 23:08:21,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:08:21,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:08:21,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:22,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:08:22,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:08:22,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594204117] [2023-11-06 23:08:22,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594204117] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:08:22,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:08:22,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 23:08:22,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650741940] [2023-11-06 23:08:22,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:08:22,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 23:08:22,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:08:22,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 23:08:22,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:08:22,123 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 413 [2023-11-06 23:08:22,126 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 91 transitions, 221 flow. Second operand has 5 states, 5 states have (on average 212.6) internal successors, (1063), 5 states have internal predecessors, (1063), 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) [2023-11-06 23:08:22,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:08:22,127 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 413 [2023-11-06 23:08:22,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:08:35,041 INFO L124 PetriNetUnfolderBase]: 113037/152320 cut-off events. [2023-11-06 23:08:35,041 INFO L125 PetriNetUnfolderBase]: For 13607/13607 co-relation queries the response was YES. [2023-11-06 23:08:35,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 316036 conditions, 152320 events. 113037/152320 cut-off events. For 13607/13607 co-relation queries the response was YES. Maximal size of possible extension queue 4270. Compared 1030527 event pairs, 27935 based on Foata normal form. 3444/128384 useless extension candidates. Maximal degree in co-relation 311912. Up to 128441 conditions per place. [2023-11-06 23:08:36,108 INFO L140 encePairwiseOnDemand]: 404/413 looper letters, 158 selfloop transitions, 5 changer transitions 0/193 dead transitions. [2023-11-06 23:08:36,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 193 transitions, 836 flow [2023-11-06 23:08:36,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 23:08:36,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 23:08:36,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1214 transitions. [2023-11-06 23:08:36,115 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5878934624697336 [2023-11-06 23:08:36,116 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1214 transitions. [2023-11-06 23:08:36,116 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1214 transitions. [2023-11-06 23:08:36,117 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:08:36,118 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1214 transitions. [2023-11-06 23:08:36,123 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 242.8) internal successors, (1214), 5 states have internal predecessors, (1214), 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) [2023-11-06 23:08:36,129 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 413.0) internal successors, (2478), 6 states have internal predecessors, (2478), 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) [2023-11-06 23:08:36,132 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 413.0) internal successors, (2478), 6 states have internal predecessors, (2478), 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) [2023-11-06 23:08:36,132 INFO L175 Difference]: Start difference. First operand has 97 places, 91 transitions, 221 flow. Second operand 5 states and 1214 transitions. [2023-11-06 23:08:36,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 193 transitions, 836 flow [2023-11-06 23:08:36,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 193 transitions, 822 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 23:08:36,140 INFO L231 Difference]: Finished difference. Result has 100 places, 93 transitions, 245 flow [2023-11-06 23:08:36,141 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=413, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=245, PETRI_PLACES=100, PETRI_TRANSITIONS=93} [2023-11-06 23:08:36,142 INFO L281 CegarLoopForPetriNet]: 104 programPoint places, -4 predicate places. [2023-11-06 23:08:36,142 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 93 transitions, 245 flow [2023-11-06 23:08:36,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 212.6) internal successors, (1063), 5 states have internal predecessors, (1063), 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) [2023-11-06 23:08:36,144 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:08:36,144 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:08:36,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 23:08:36,145 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-06 23:08:36,145 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:08:36,146 INFO L85 PathProgramCache]: Analyzing trace with hash -118504547, now seen corresponding path program 1 times [2023-11-06 23:08:36,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:08:36,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950169402] [2023-11-06 23:08:36,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:08:36,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:08:36,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:36,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:08:36,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:08:36,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950169402] [2023-11-06 23:08:36,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950169402] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:08:36,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:08:36,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 23:08:36,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72881598] [2023-11-06 23:08:36,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:08:36,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:08:36,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:08:36,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:08:36,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:08:36,240 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 214 out of 413 [2023-11-06 23:08:36,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 93 transitions, 245 flow. Second operand has 3 states, 3 states have (on average 216.66666666666666) internal successors, (650), 3 states have internal predecessors, (650), 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) [2023-11-06 23:08:36,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:08:36,242 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 214 of 413 [2023-11-06 23:08:36,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:08:45,773 INFO L124 PetriNetUnfolderBase]: 85165/116889 cut-off events. [2023-11-06 23:08:45,773 INFO L125 PetriNetUnfolderBase]: For 18128/18128 co-relation queries the response was YES. [2023-11-06 23:08:45,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 253588 conditions, 116889 events. 85165/116889 cut-off events. For 18128/18128 co-relation queries the response was YES. Maximal size of possible extension queue 3488. Compared 805278 event pairs, 17941 based on Foata normal form. 2460/100064 useless extension candidates. Maximal degree in co-relation 249791. Up to 93953 conditions per place. [2023-11-06 23:08:46,450 INFO L140 encePairwiseOnDemand]: 406/413 looper letters, 98 selfloop transitions, 3 changer transitions 0/131 dead transitions. [2023-11-06 23:08:46,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 131 transitions, 557 flow [2023-11-06 23:08:46,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:08:46,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:08:46,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 741 transitions. [2023-11-06 23:08:46,455 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5980629539951574 [2023-11-06 23:08:46,455 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 741 transitions. [2023-11-06 23:08:46,455 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 741 transitions. [2023-11-06 23:08:46,456 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:08:46,456 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 741 transitions. [2023-11-06 23:08:46,460 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 247.0) internal successors, (741), 3 states have internal predecessors, (741), 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) [2023-11-06 23:08:46,464 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 413.0) internal successors, (1652), 4 states have internal predecessors, (1652), 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) [2023-11-06 23:08:46,466 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 413.0) internal successors, (1652), 4 states have internal predecessors, (1652), 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) [2023-11-06 23:08:46,466 INFO L175 Difference]: Start difference. First operand has 100 places, 93 transitions, 245 flow. Second operand 3 states and 741 transitions. [2023-11-06 23:08:46,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 131 transitions, 557 flow [2023-11-06 23:08:46,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 131 transitions, 545 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-06 23:08:46,502 INFO L231 Difference]: Finished difference. Result has 100 places, 95 transitions, 263 flow [2023-11-06 23:08:46,503 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=413, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=263, PETRI_PLACES=100, PETRI_TRANSITIONS=95} [2023-11-06 23:08:46,504 INFO L281 CegarLoopForPetriNet]: 104 programPoint places, -4 predicate places. [2023-11-06 23:08:46,504 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 95 transitions, 263 flow [2023-11-06 23:08:46,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 216.66666666666666) internal successors, (650), 3 states have internal predecessors, (650), 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) [2023-11-06 23:08:46,505 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:08:46,506 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:08:46,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 23:08:46,506 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread6Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-06 23:08:46,507 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:08:46,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1841848752, now seen corresponding path program 1 times [2023-11-06 23:08:46,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:08:46,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164547396] [2023-11-06 23:08:46,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:08:46,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:08:46,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:46,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:08:46,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:08:46,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164547396] [2023-11-06 23:08:46,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164547396] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:08:46,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:08:46,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 23:08:46,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877578845] [2023-11-06 23:08:46,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:08:46,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:08:46,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:08:46,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:08:46,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:08:46,651 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 413 [2023-11-06 23:08:46,653 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 95 transitions, 263 flow. Second operand has 3 states, 3 states have (on average 218.33333333333334) internal successors, (655), 3 states have internal predecessors, (655), 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) [2023-11-06 23:08:46,653 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:08:46,653 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 413 [2023-11-06 23:08:46,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand