./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread-wmm/mix036.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8910271c-b60a-4c93-be09-858c9249e1a9/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8910271c-b60a-4c93-be09-858c9249e1a9/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8910271c-b60a-4c93-be09-858c9249e1a9/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8910271c-b60a-4c93-be09-858c9249e1a9/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/mix036.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8910271c-b60a-4c93-be09-858c9249e1a9/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8910271c-b60a-4c93-be09-858c9249e1a9/bin/uautomizer-verify-VRDe98Ueme --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 e3d3e405a2d3cb3ab8b02ed87788ef59412b7b81517118cc37c044f334087868 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 10:44:29,841 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 10:44:29,952 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8910271c-b60a-4c93-be09-858c9249e1a9/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-26 10:44:29,958 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 10:44:29,959 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 10:44:29,986 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 10:44:29,987 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 10:44:29,988 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 10:44:29,988 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 10:44:29,989 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 10:44:29,990 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 10:44:29,991 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 10:44:29,992 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 10:44:29,992 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 10:44:29,993 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 10:44:29,994 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 10:44:29,994 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 10:44:29,995 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 10:44:29,996 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 10:44:29,996 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 10:44:29,997 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 10:44:30,007 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 10:44:30,008 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 10:44:30,009 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 10:44:30,009 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-26 10:44:30,010 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 10:44:30,010 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 10:44:30,011 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 10:44:30,011 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 10:44:30,012 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 10:44:30,012 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 10:44:30,013 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 10:44:30,013 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 10:44:30,014 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:44:30,014 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 10:44:30,015 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 10:44:30,015 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 10:44:30,015 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 10:44:30,016 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 10:44:30,016 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 10:44:30,016 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 10:44:30,017 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 10:44:30,017 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 10:44:30,018 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 10:44:30,018 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_8910271c-b60a-4c93-be09-858c9249e1a9/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8910271c-b60a-4c93-be09-858c9249e1a9/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e3d3e405a2d3cb3ab8b02ed87788ef59412b7b81517118cc37c044f334087868 [2023-11-26 10:44:30,387 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 10:44:30,425 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 10:44:30,429 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 10:44:30,431 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 10:44:30,432 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 10:44:30,433 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8910271c-b60a-4c93-be09-858c9249e1a9/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/pthread-wmm/mix036.oepc.i [2023-11-26 10:44:33,789 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 10:44:34,189 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 10:44:34,193 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8910271c-b60a-4c93-be09-858c9249e1a9/sv-benchmarks/c/pthread-wmm/mix036.oepc.i [2023-11-26 10:44:34,218 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8910271c-b60a-4c93-be09-858c9249e1a9/bin/uautomizer-verify-VRDe98Ueme/data/00af78638/a1037ba9d8ea489f8c8a8cdd3b2d82d5/FLAG6e95e58c6 [2023-11-26 10:44:34,241 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8910271c-b60a-4c93-be09-858c9249e1a9/bin/uautomizer-verify-VRDe98Ueme/data/00af78638/a1037ba9d8ea489f8c8a8cdd3b2d82d5 [2023-11-26 10:44:34,249 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 10:44:34,252 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 10:44:34,254 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 10:44:34,254 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 10:44:34,261 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 10:44:34,262 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:44:34" (1/1) ... [2023-11-26 10:44:34,263 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34e68077 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:34, skipping insertion in model container [2023-11-26 10:44:34,264 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:44:34" (1/1) ... [2023-11-26 10:44:34,346 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 10:44:34,871 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:44:34,892 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 10:44:34,963 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:44:35,054 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 10:44:35,055 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 10:44:35,063 INFO L206 MainTranslator]: Completed translation [2023-11-26 10:44:35,064 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:35 WrapperNode [2023-11-26 10:44:35,065 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 10:44:35,067 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 10:44:35,067 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 10:44:35,067 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 10:44:35,076 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:35" (1/1) ... [2023-11-26 10:44:35,104 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:35" (1/1) ... [2023-11-26 10:44:35,136 INFO L138 Inliner]: procedures = 177, calls = 72, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 154 [2023-11-26 10:44:35,137 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 10:44:35,138 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 10:44:35,138 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 10:44:35,138 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 10:44:35,153 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:35" (1/1) ... [2023-11-26 10:44:35,154 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:35" (1/1) ... [2023-11-26 10:44:35,168 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:35" (1/1) ... [2023-11-26 10:44:35,206 INFO L175 MemorySlicer]: Split 6 memory accesses to 5 slices as follows [2, 1, 1, 1, 1]. 33 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 4 writes are split as follows [0, 1, 1, 1, 1]. [2023-11-26 10:44:35,206 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:35" (1/1) ... [2023-11-26 10:44:35,206 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:35" (1/1) ... [2023-11-26 10:44:35,240 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:35" (1/1) ... [2023-11-26 10:44:35,260 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:35" (1/1) ... [2023-11-26 10:44:35,263 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:35" (1/1) ... [2023-11-26 10:44:35,265 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:35" (1/1) ... [2023-11-26 10:44:35,270 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 10:44:35,279 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 10:44:35,279 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 10:44:35,280 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 10:44:35,281 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:35" (1/1) ... [2023-11-26 10:44:35,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:44:35,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8910271c-b60a-4c93-be09-858c9249e1a9/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:44:35,338 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8910271c-b60a-4c93-be09-858c9249e1a9/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 10:44:35,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8910271c-b60a-4c93-be09-858c9249e1a9/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 10:44:35,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-26 10:44:35,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-26 10:44:35,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-26 10:44:35,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-26 10:44:35,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-26 10:44:35,398 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-26 10:44:35,398 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 10:44:35,400 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 10:44:35,401 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 10:44:35,401 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-26 10:44:35,402 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-26 10:44:35,402 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-26 10:44:35,402 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-26 10:44:35,402 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-26 10:44:35,402 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-26 10:44:35,403 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-11-26 10:44:35,403 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-11-26 10:44:35,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 10:44:35,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-26 10:44:35,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-26 10:44:35,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-26 10:44:35,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-26 10:44:35,406 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-26 10:44:35,407 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 10:44:35,407 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 10:44:35,410 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-26 10:44:35,633 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 10:44:35,635 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 10:44:36,071 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 10:44:36,470 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 10:44:36,471 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-26 10:44:36,472 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:44:36 BoogieIcfgContainer [2023-11-26 10:44:36,472 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 10:44:36,476 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 10:44:36,476 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 10:44:36,480 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 10:44:36,480 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 10:44:34" (1/3) ... [2023-11-26 10:44:36,481 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4790204e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:44:36, skipping insertion in model container [2023-11-26 10:44:36,481 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:35" (2/3) ... [2023-11-26 10:44:36,483 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4790204e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:44:36, skipping insertion in model container [2023-11-26 10:44:36,483 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:44:36" (3/3) ... [2023-11-26 10:44:36,484 INFO L112 eAbstractionObserver]: Analyzing ICFG mix036.oepc.i [2023-11-26 10:44:36,494 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-26 10:44:36,507 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 10:44:36,507 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-11-26 10:44:36,507 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-26 10:44:36,585 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-26 10:44:36,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 65 places, 52 transitions, 120 flow [2023-11-26 10:44:36,702 INFO L124 PetriNetUnfolderBase]: 0/48 cut-off events. [2023-11-26 10:44:36,703 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 10:44:36,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 48 events. 0/48 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 118 event pairs, 0 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2023-11-26 10:44:36,708 INFO L82 GeneralOperation]: Start removeDead. Operand has 65 places, 52 transitions, 120 flow [2023-11-26 10:44:36,720 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 61 places, 48 transitions, 108 flow [2023-11-26 10:44:36,744 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 10:44:36,754 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;@6a2314ca, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 10:44:36,754 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2023-11-26 10:44:36,768 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 10:44:36,769 INFO L124 PetriNetUnfolderBase]: 0/15 cut-off events. [2023-11-26 10:44:36,769 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 10:44:36,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:44:36,770 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:44:36,770 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-26 10:44:36,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:36,777 INFO L85 PathProgramCache]: Analyzing trace with hash -1416329891, now seen corresponding path program 1 times [2023-11-26 10:44:36,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:36,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970384998] [2023-11-26 10:44:36,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:36,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:36,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:37,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:44:37,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:44:37,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970384998] [2023-11-26 10:44:37,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970384998] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:44:37,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:44:37,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 10:44:37,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010850184] [2023-11-26 10:44:37,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:44:37,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:44:37,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:44:37,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:44:37,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:44:37,310 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 52 [2023-11-26 10:44:37,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 48 transitions, 108 flow. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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) [2023-11-26 10:44:37,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:44:37,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 52 [2023-11-26 10:44:37,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:44:42,387 INFO L124 PetriNetUnfolderBase]: 22099/29659 cut-off events. [2023-11-26 10:44:42,387 INFO L125 PetriNetUnfolderBase]: For 196/196 co-relation queries the response was YES. [2023-11-26 10:44:42,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59635 conditions, 29659 events. 22099/29659 cut-off events. For 196/196 co-relation queries the response was YES. Maximal size of possible extension queue 1567. Compared 184744 event pairs, 9017 based on Foata normal form. 0/21691 useless extension candidates. Maximal degree in co-relation 59623. Up to 28869 conditions per place. [2023-11-26 10:44:42,693 INFO L140 encePairwiseOnDemand]: 39/52 looper letters, 49 selfloop transitions, 5 changer transitions 0/68 dead transitions. [2023-11-26 10:44:42,693 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 68 transitions, 265 flow [2023-11-26 10:44:42,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:44:42,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 10:44:42,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 116 transitions. [2023-11-26 10:44:42,708 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7435897435897436 [2023-11-26 10:44:42,710 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 116 transitions. [2023-11-26 10:44:42,710 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 116 transitions. [2023-11-26 10:44:42,712 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:44:42,714 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 116 transitions. [2023-11-26 10:44:42,719 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 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) [2023-11-26 10:44:42,725 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 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) [2023-11-26 10:44:42,726 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 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) [2023-11-26 10:44:42,728 INFO L175 Difference]: Start difference. First operand has 61 places, 48 transitions, 108 flow. Second operand 3 states and 116 transitions. [2023-11-26 10:44:42,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 68 transitions, 265 flow [2023-11-26 10:44:42,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 68 transitions, 258 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-26 10:44:42,745 INFO L231 Difference]: Finished difference. Result has 60 places, 52 transitions, 151 flow [2023-11-26 10:44:42,748 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=151, PETRI_PLACES=60, PETRI_TRANSITIONS=52} [2023-11-26 10:44:42,755 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -1 predicate places. [2023-11-26 10:44:42,755 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 52 transitions, 151 flow [2023-11-26 10:44:42,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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) [2023-11-26 10:44:42,756 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:44:42,756 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:44:42,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 10:44:42,757 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-26 10:44:42,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:42,759 INFO L85 PathProgramCache]: Analyzing trace with hash -1560853802, now seen corresponding path program 1 times [2023-11-26 10:44:42,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:42,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621267705] [2023-11-26 10:44:42,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:42,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:42,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:43,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:44:43,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:44:43,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621267705] [2023-11-26 10:44:43,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621267705] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:44:43,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:44:43,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:44:43,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637259603] [2023-11-26 10:44:43,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:44:43,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:44:43,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:44:43,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:44:43,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:44:43,170 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 52 [2023-11-26 10:44:43,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 52 transitions, 151 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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) [2023-11-26 10:44:43,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:44:43,171 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 52 [2023-11-26 10:44:43,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:44:46,085 INFO L124 PetriNetUnfolderBase]: 12417/16813 cut-off events. [2023-11-26 10:44:46,085 INFO L125 PetriNetUnfolderBase]: For 1233/1233 co-relation queries the response was YES. [2023-11-26 10:44:46,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39650 conditions, 16813 events. 12417/16813 cut-off events. For 1233/1233 co-relation queries the response was YES. Maximal size of possible extension queue 924. Compared 101111 event pairs, 4275 based on Foata normal form. 0/13954 useless extension candidates. Maximal degree in co-relation 39639. Up to 16022 conditions per place. [2023-11-26 10:44:46,231 INFO L140 encePairwiseOnDemand]: 43/52 looper letters, 45 selfloop transitions, 5 changer transitions 0/64 dead transitions. [2023-11-26 10:44:46,232 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 64 transitions, 273 flow [2023-11-26 10:44:46,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:44:46,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 10:44:46,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 126 transitions. [2023-11-26 10:44:46,239 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6057692307692307 [2023-11-26 10:44:46,239 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 126 transitions. [2023-11-26 10:44:46,240 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 126 transitions. [2023-11-26 10:44:46,242 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:44:46,243 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 126 transitions. [2023-11-26 10:44:46,244 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 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) [2023-11-26 10:44:46,246 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 52.0) internal successors, (260), 5 states have internal predecessors, (260), 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) [2023-11-26 10:44:46,247 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 52.0) internal successors, (260), 5 states have internal predecessors, (260), 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) [2023-11-26 10:44:46,247 INFO L175 Difference]: Start difference. First operand has 60 places, 52 transitions, 151 flow. Second operand 4 states and 126 transitions. [2023-11-26 10:44:46,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 64 transitions, 273 flow [2023-11-26 10:44:46,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 64 transitions, 268 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 10:44:46,256 INFO L231 Difference]: Finished difference. Result has 58 places, 48 transitions, 140 flow [2023-11-26 10:44:46,257 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=140, PETRI_PLACES=58, PETRI_TRANSITIONS=48} [2023-11-26 10:44:46,258 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -3 predicate places. [2023-11-26 10:44:46,258 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 48 transitions, 140 flow [2023-11-26 10:44:46,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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) [2023-11-26 10:44:46,258 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:44:46,258 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:44:46,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 10:44:46,259 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-26 10:44:46,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:46,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1560853801, now seen corresponding path program 1 times [2023-11-26 10:44:46,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:46,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823381744] [2023-11-26 10:44:46,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:46,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:46,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:46,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:44:46,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:44:46,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823381744] [2023-11-26 10:44:46,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823381744] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:44:46,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:44:46,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:44:46,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969865443] [2023-11-26 10:44:46,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:44:46,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:44:46,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:44:46,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:44:46,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:44:46,449 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 52 [2023-11-26 10:44:46,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 48 transitions, 140 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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) [2023-11-26 10:44:46,450 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:44:46,450 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 52 [2023-11-26 10:44:46,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:44:48,722 INFO L124 PetriNetUnfolderBase]: 8671/11911 cut-off events. [2023-11-26 10:44:48,722 INFO L125 PetriNetUnfolderBase]: For 1746/1746 co-relation queries the response was YES. [2023-11-26 10:44:48,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27479 conditions, 11911 events. 8671/11911 cut-off events. For 1746/1746 co-relation queries the response was YES. Maximal size of possible extension queue 606. Compared 69869 event pairs, 1503 based on Foata normal form. 0/10671 useless extension candidates. Maximal degree in co-relation 27467. Up to 8721 conditions per place. [2023-11-26 10:44:48,813 INFO L140 encePairwiseOnDemand]: 43/52 looper letters, 63 selfloop transitions, 9 changer transitions 0/86 dead transitions. [2023-11-26 10:44:48,813 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 86 transitions, 378 flow [2023-11-26 10:44:48,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:44:48,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 10:44:48,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 148 transitions. [2023-11-26 10:44:48,816 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7115384615384616 [2023-11-26 10:44:48,816 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 148 transitions. [2023-11-26 10:44:48,816 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 148 transitions. [2023-11-26 10:44:48,816 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:44:48,817 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 148 transitions. [2023-11-26 10:44:48,818 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 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) [2023-11-26 10:44:48,819 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 52.0) internal successors, (260), 5 states have internal predecessors, (260), 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) [2023-11-26 10:44:48,819 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 52.0) internal successors, (260), 5 states have internal predecessors, (260), 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) [2023-11-26 10:44:48,820 INFO L175 Difference]: Start difference. First operand has 58 places, 48 transitions, 140 flow. Second operand 4 states and 148 transitions. [2023-11-26 10:44:48,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 86 transitions, 378 flow [2023-11-26 10:44:48,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 86 transitions, 372 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 10:44:48,823 INFO L231 Difference]: Finished difference. Result has 60 places, 52 transitions, 192 flow [2023-11-26 10:44:48,824 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=192, PETRI_PLACES=60, PETRI_TRANSITIONS=52} [2023-11-26 10:44:48,825 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -1 predicate places. [2023-11-26 10:44:48,825 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 52 transitions, 192 flow [2023-11-26 10:44:48,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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) [2023-11-26 10:44:48,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:44:48,826 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:44:48,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 10:44:48,826 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting P2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-26 10:44:48,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:48,827 INFO L85 PathProgramCache]: Analyzing trace with hash -1406246658, now seen corresponding path program 1 times [2023-11-26 10:44:48,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:48,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767503064] [2023-11-26 10:44:48,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:48,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:48,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:49,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:44:49,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:44:49,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767503064] [2023-11-26 10:44:49,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767503064] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:44:49,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:44:49,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:44:49,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817284865] [2023-11-26 10:44:49,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:44:49,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 10:44:49,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:44:49,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 10:44:49,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:44:49,032 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 52 [2023-11-26 10:44:49,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 52 transitions, 192 flow. Second operand has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 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) [2023-11-26 10:44:49,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:44:49,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 52 [2023-11-26 10:44:49,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:44:50,524 INFO L124 PetriNetUnfolderBase]: 6607/9103 cut-off events. [2023-11-26 10:44:50,524 INFO L125 PetriNetUnfolderBase]: For 4236/4236 co-relation queries the response was YES. [2023-11-26 10:44:50,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23632 conditions, 9103 events. 6607/9103 cut-off events. For 4236/4236 co-relation queries the response was YES. Maximal size of possible extension queue 480. Compared 52331 event pairs, 563 based on Foata normal form. 0/8738 useless extension candidates. Maximal degree in co-relation 23619. Up to 3176 conditions per place. [2023-11-26 10:44:50,616 INFO L140 encePairwiseOnDemand]: 43/52 looper letters, 75 selfloop transitions, 13 changer transitions 4/106 dead transitions. [2023-11-26 10:44:50,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 106 transitions, 512 flow [2023-11-26 10:44:50,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 10:44:50,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-26 10:44:50,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 186 transitions. [2023-11-26 10:44:50,621 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7153846153846154 [2023-11-26 10:44:50,621 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 186 transitions. [2023-11-26 10:44:50,621 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 186 transitions. [2023-11-26 10:44:50,622 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:44:50,622 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 186 transitions. [2023-11-26 10:44:50,623 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 37.2) internal successors, (186), 5 states have internal predecessors, (186), 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) [2023-11-26 10:44:50,626 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 52.0) internal successors, (312), 6 states have internal predecessors, (312), 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) [2023-11-26 10:44:50,627 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 52.0) internal successors, (312), 6 states have internal predecessors, (312), 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) [2023-11-26 10:44:50,627 INFO L175 Difference]: Start difference. First operand has 60 places, 52 transitions, 192 flow. Second operand 5 states and 186 transitions. [2023-11-26 10:44:50,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 106 transitions, 512 flow [2023-11-26 10:44:50,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 106 transitions, 494 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-11-26 10:44:50,640 INFO L231 Difference]: Finished difference. Result has 63 places, 52 transitions, 216 flow [2023-11-26 10:44:50,640 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=216, PETRI_PLACES=63, PETRI_TRANSITIONS=52} [2023-11-26 10:44:50,643 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 2 predicate places. [2023-11-26 10:44:50,643 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 52 transitions, 216 flow [2023-11-26 10:44:50,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 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) [2023-11-26 10:44:50,644 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:44:50,644 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:44:50,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-26 10:44:50,645 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting P3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-26 10:44:50,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:50,646 INFO L85 PathProgramCache]: Analyzing trace with hash 123812877, now seen corresponding path program 1 times [2023-11-26 10:44:50,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:50,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220001797] [2023-11-26 10:44:50,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:50,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:50,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:50,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:44:50,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:44:50,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220001797] [2023-11-26 10:44:50,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220001797] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:44:50,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:44:50,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 10:44:50,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070764078] [2023-11-26 10:44:50,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:44:50,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 10:44:50,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:44:50,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 10:44:50,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-26 10:44:50,938 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 52 [2023-11-26 10:44:50,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 52 transitions, 216 flow. Second operand has 6 states, 6 states have (on average 21.0) internal successors, (126), 6 states have internal predecessors, (126), 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) [2023-11-26 10:44:50,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:44:50,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 52 [2023-11-26 10:44:50,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:44:52,389 INFO L124 PetriNetUnfolderBase]: 5935/8191 cut-off events. [2023-11-26 10:44:52,389 INFO L125 PetriNetUnfolderBase]: For 7332/7332 co-relation queries the response was YES. [2023-11-26 10:44:52,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21957 conditions, 8191 events. 5935/8191 cut-off events. For 7332/7332 co-relation queries the response was YES. Maximal size of possible extension queue 480. Compared 48119 event pairs, 443 based on Foata normal form. 160/8146 useless extension candidates. Maximal degree in co-relation 21943. Up to 3176 conditions per place. [2023-11-26 10:44:52,424 INFO L140 encePairwiseOnDemand]: 43/52 looper letters, 0 selfloop transitions, 0 changer transitions 98/98 dead transitions. [2023-11-26 10:44:52,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 98 transitions, 464 flow [2023-11-26 10:44:52,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 10:44:52,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 10:44:52,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 196 transitions. [2023-11-26 10:44:52,426 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6282051282051282 [2023-11-26 10:44:52,426 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 196 transitions. [2023-11-26 10:44:52,427 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 196 transitions. [2023-11-26 10:44:52,427 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:44:52,427 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 196 transitions. [2023-11-26 10:44:52,428 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 32.666666666666664) internal successors, (196), 6 states have internal predecessors, (196), 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) [2023-11-26 10:44:52,429 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 52.0) internal successors, (364), 7 states have internal predecessors, (364), 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) [2023-11-26 10:44:52,430 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 52.0) internal successors, (364), 7 states have internal predecessors, (364), 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) [2023-11-26 10:44:52,430 INFO L175 Difference]: Start difference. First operand has 63 places, 52 transitions, 216 flow. Second operand 6 states and 196 transitions. [2023-11-26 10:44:52,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 98 transitions, 464 flow [2023-11-26 10:44:52,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 98 transitions, 409 flow, removed 8 selfloop flow, removed 6 redundant places. [2023-11-26 10:44:52,511 INFO L231 Difference]: Finished difference. Result has 58 places, 0 transitions, 0 flow [2023-11-26 10:44:52,511 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=58, PETRI_TRANSITIONS=0} [2023-11-26 10:44:52,512 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -3 predicate places. [2023-11-26 10:44:52,512 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 0 transitions, 0 flow [2023-11-26 10:44:52,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.0) internal successors, (126), 6 states have internal predecessors, (126), 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) [2023-11-26 10:44:52,515 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 20 remaining) [2023-11-26 10:44:52,515 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 20 remaining) [2023-11-26 10:44:52,516 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 20 remaining) [2023-11-26 10:44:52,516 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 20 remaining) [2023-11-26 10:44:52,516 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 20 remaining) [2023-11-26 10:44:52,516 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 20 remaining) [2023-11-26 10:44:52,516 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 20 remaining) [2023-11-26 10:44:52,517 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 20 remaining) [2023-11-26 10:44:52,517 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (11 of 20 remaining) [2023-11-26 10:44:52,517 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 20 remaining) [2023-11-26 10:44:52,517 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 20 remaining) [2023-11-26 10:44:52,517 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 20 remaining) [2023-11-26 10:44:52,518 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 20 remaining) [2023-11-26 10:44:52,518 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 20 remaining) [2023-11-26 10:44:52,518 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 20 remaining) [2023-11-26 10:44:52,518 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 20 remaining) [2023-11-26 10:44:52,518 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 20 remaining) [2023-11-26 10:44:52,523 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 20 remaining) [2023-11-26 10:44:52,523 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 20 remaining) [2023-11-26 10:44:52,523 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 20 remaining) [2023-11-26 10:44:52,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-26 10:44:52,524 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-11-26 10:44:52,532 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-26 10:44:52,532 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-26 10:44:52,539 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 10:44:52 BasicIcfg [2023-11-26 10:44:52,539 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-26 10:44:52,540 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-26 10:44:52,540 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-26 10:44:52,540 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-26 10:44:52,541 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:44:36" (3/4) ... [2023-11-26 10:44:52,543 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-26 10:44:52,545 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-11-26 10:44:52,546 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-11-26 10:44:52,546 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2023-11-26 10:44:52,546 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2023-11-26 10:44:52,554 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 91 nodes and edges [2023-11-26 10:44:52,555 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2023-11-26 10:44:52,555 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-11-26 10:44:52,555 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-26 10:44:52,671 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8910271c-b60a-4c93-be09-858c9249e1a9/bin/uautomizer-verify-VRDe98Ueme/witness.graphml [2023-11-26 10:44:52,672 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8910271c-b60a-4c93-be09-858c9249e1a9/bin/uautomizer-verify-VRDe98Ueme/witness.yml [2023-11-26 10:44:52,672 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-26 10:44:52,672 INFO L158 Benchmark]: Toolchain (without parser) took 18420.97ms. Allocated memory was 107.0MB in the beginning and 6.0GB in the end (delta: 5.9GB). Free memory was 62.0MB in the beginning and 5.4GB in the end (delta: -5.3GB). Peak memory consumption was 629.2MB. Max. memory is 16.1GB. [2023-11-26 10:44:52,673 INFO L158 Benchmark]: CDTParser took 1.52ms. Allocated memory is still 107.0MB. Free memory is still 76.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 10:44:52,673 INFO L158 Benchmark]: CACSL2BoogieTranslator took 812.15ms. Allocated memory was 107.0MB in the beginning and 155.2MB in the end (delta: 48.2MB). Free memory was 61.7MB in the beginning and 124.5MB in the end (delta: -62.9MB). Peak memory consumption was 30.3MB. Max. memory is 16.1GB. [2023-11-26 10:44:52,673 INFO L158 Benchmark]: Boogie Procedure Inliner took 70.00ms. Allocated memory is still 155.2MB. Free memory was 124.5MB in the beginning and 121.7MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-26 10:44:52,674 INFO L158 Benchmark]: Boogie Preprocessor took 133.22ms. Allocated memory is still 155.2MB. Free memory was 121.7MB in the beginning and 117.5MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-26 10:44:52,674 INFO L158 Benchmark]: RCFGBuilder took 1192.80ms. Allocated memory is still 155.2MB. Free memory was 117.4MB in the beginning and 107.0MB in the end (delta: 10.4MB). Peak memory consumption was 46.5MB. Max. memory is 16.1GB. [2023-11-26 10:44:52,675 INFO L158 Benchmark]: TraceAbstraction took 16063.22ms. Allocated memory was 155.2MB in the beginning and 6.0GB in the end (delta: 5.9GB). Free memory was 106.0MB in the beginning and 5.4GB in the end (delta: -5.3GB). Peak memory consumption was 705.4MB. Max. memory is 16.1GB. [2023-11-26 10:44:52,675 INFO L158 Benchmark]: Witness Printer took 132.15ms. Allocated memory is still 6.0GB. Free memory was 5.4GB in the beginning and 5.4GB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-26 10:44:52,678 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.52ms. Allocated memory is still 107.0MB. Free memory is still 76.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 812.15ms. Allocated memory was 107.0MB in the beginning and 155.2MB in the end (delta: 48.2MB). Free memory was 61.7MB in the beginning and 124.5MB in the end (delta: -62.9MB). Peak memory consumption was 30.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 70.00ms. Allocated memory is still 155.2MB. Free memory was 124.5MB in the beginning and 121.7MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 133.22ms. Allocated memory is still 155.2MB. Free memory was 121.7MB in the beginning and 117.5MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1192.80ms. Allocated memory is still 155.2MB. Free memory was 117.4MB in the beginning and 107.0MB in the end (delta: 10.4MB). Peak memory consumption was 46.5MB. Max. memory is 16.1GB. * TraceAbstraction took 16063.22ms. Allocated memory was 155.2MB in the beginning and 6.0GB in the end (delta: 5.9GB). Free memory was 106.0MB in the beginning and 5.4GB in the end (delta: -5.3GB). Peak memory consumption was 705.4MB. Max. memory is 16.1GB. * Witness Printer took 132.15ms. Allocated memory is still 6.0GB. Free memory was 5.4GB in the beginning and 5.4GB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 779]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 779]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 799]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 799]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 819]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 819]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 858]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 858]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 95 locations, 20 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 15.9s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 14.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 296 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 286 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 51 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 465 IncrementalHoareTripleChecker+Invalid, 516 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 51 mSolverCounterUnsat, 0 mSDtfsCounter, 465 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=216occurred in iteration=4, InterpolantAutomatonStates: 22, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 86 NumberOfCodeBlocks, 86 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 81 ConstructedInterpolants, 0 QuantifiedInterpolants, 243 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-26 10:44:52,710 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8910271c-b60a-4c93-be09-858c9249e1a9/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE