./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread-wmm/mix005.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc 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_7dfcbde3-ebfc-492e-beaa-4825ed8ca0b3/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dfcbde3-ebfc-492e-beaa-4825ed8ca0b3/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_7dfcbde3-ebfc-492e-beaa-4825ed8ca0b3/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dfcbde3-ebfc-492e-beaa-4825ed8ca0b3/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/mix005.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dfcbde3-ebfc-492e-beaa-4825ed8ca0b3/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_7dfcbde3-ebfc-492e-beaa-4825ed8ca0b3/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 0c4e58b38f229da1b25a4c7b1c830f1f36e4dc5c1e18903f04a209f4b4cfa3c5 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 12:01:42,141 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 12:01:42,275 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dfcbde3-ebfc-492e-beaa-4825ed8ca0b3/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-26 12:01:42,294 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 12:01:42,295 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 12:01:42,341 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 12:01:42,342 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 12:01:42,343 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 12:01:42,344 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 12:01:42,349 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 12:01:42,350 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 12:01:42,351 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 12:01:42,352 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 12:01:42,354 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 12:01:42,354 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 12:01:42,355 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 12:01:42,355 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 12:01:42,356 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 12:01:42,356 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 12:01:42,357 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 12:01:42,357 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 12:01:42,358 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 12:01:42,358 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 12:01:42,359 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 12:01:42,359 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-26 12:01:42,360 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 12:01:42,360 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 12:01:42,361 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 12:01:42,361 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 12:01:42,362 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 12:01:42,363 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 12:01:42,363 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 12:01:42,364 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 12:01:42,364 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 12:01:42,364 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 12:01:42,364 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 12:01:42,364 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 12:01:42,365 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 12:01:42,365 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 12:01:42,365 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 12:01:42,365 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 12:01:42,367 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 12:01:42,367 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 12:01:42,368 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 12:01:42,368 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_7dfcbde3-ebfc-492e-beaa-4825ed8ca0b3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dfcbde3-ebfc-492e-beaa-4825ed8ca0b3/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0c4e58b38f229da1b25a4c7b1c830f1f36e4dc5c1e18903f04a209f4b4cfa3c5 [2023-11-26 12:01:42,727 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 12:01:42,763 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 12:01:42,766 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 12:01:42,768 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 12:01:42,768 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 12:01:42,769 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dfcbde3-ebfc-492e-beaa-4825ed8ca0b3/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/pthread-wmm/mix005.opt.i [2023-11-26 12:01:45,873 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 12:01:46,213 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 12:01:46,214 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dfcbde3-ebfc-492e-beaa-4825ed8ca0b3/sv-benchmarks/c/pthread-wmm/mix005.opt.i [2023-11-26 12:01:46,240 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dfcbde3-ebfc-492e-beaa-4825ed8ca0b3/bin/uautomizer-verify-VRDe98Ueme/data/b303196b4/9c82a563fcb942e58a968bced7f6618f/FLAG0d329b3e6 [2023-11-26 12:01:46,261 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dfcbde3-ebfc-492e-beaa-4825ed8ca0b3/bin/uautomizer-verify-VRDe98Ueme/data/b303196b4/9c82a563fcb942e58a968bced7f6618f [2023-11-26 12:01:46,264 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 12:01:46,266 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 12:01:46,267 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 12:01:46,268 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 12:01:46,273 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 12:01:46,274 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:01:46" (1/1) ... [2023-11-26 12:01:46,275 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60b2c27e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:46, skipping insertion in model container [2023-11-26 12:01:46,276 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:01:46" (1/1) ... [2023-11-26 12:01:46,333 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 12:01:46,817 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 12:01:46,834 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 12:01:46,933 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 12:01:46,970 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 12:01:46,970 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 12:01:46,978 INFO L206 MainTranslator]: Completed translation [2023-11-26 12:01:46,979 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:46 WrapperNode [2023-11-26 12:01:46,979 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 12:01:46,980 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 12:01:46,981 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 12:01:46,981 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 12:01:46,990 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:46" (1/1) ... [2023-11-26 12:01:47,008 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:46" (1/1) ... [2023-11-26 12:01:47,050 INFO L138 Inliner]: procedures = 177, calls = 72, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 173 [2023-11-26 12:01:47,050 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 12:01:47,051 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 12:01:47,051 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 12:01:47,051 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 12:01:47,076 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:46" (1/1) ... [2023-11-26 12:01:47,076 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:46" (1/1) ... [2023-11-26 12:01:47,082 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:46" (1/1) ... [2023-11-26 12:01:47,118 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 12:01:47,118 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:46" (1/1) ... [2023-11-26 12:01:47,119 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:46" (1/1) ... [2023-11-26 12:01:47,132 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:46" (1/1) ... [2023-11-26 12:01:47,134 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:46" (1/1) ... [2023-11-26 12:01:47,139 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:46" (1/1) ... [2023-11-26 12:01:47,141 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:46" (1/1) ... [2023-11-26 12:01:47,148 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 12:01:47,149 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 12:01:47,149 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 12:01:47,149 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 12:01:47,150 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:46" (1/1) ... [2023-11-26 12:01:47,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 12:01:47,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dfcbde3-ebfc-492e-beaa-4825ed8ca0b3/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:01:47,207 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dfcbde3-ebfc-492e-beaa-4825ed8ca0b3/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 12:01:47,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dfcbde3-ebfc-492e-beaa-4825ed8ca0b3/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 12:01:47,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-26 12:01:47,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-26 12:01:47,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-26 12:01:47,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-26 12:01:47,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-26 12:01:47,260 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-26 12:01:47,260 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 12:01:47,263 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 12:01:47,263 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 12:01:47,264 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-26 12:01:47,264 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-26 12:01:47,264 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-26 12:01:47,264 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-26 12:01:47,264 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-26 12:01:47,264 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-26 12:01:47,265 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-11-26 12:01:47,265 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-11-26 12:01:47,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 12:01:47,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-26 12:01:47,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-26 12:01:47,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-26 12:01:47,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-26 12:01:47,268 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-26 12:01:47,269 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 12:01:47,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 12:01:47,271 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 12:01:47,465 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 12:01:47,469 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 12:01:47,913 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 12:01:48,256 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 12:01:48,256 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-26 12:01:48,257 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:01:48 BoogieIcfgContainer [2023-11-26 12:01:48,257 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 12:01:48,259 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 12:01:48,260 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 12:01:48,263 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 12:01:48,263 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:01:46" (1/3) ... [2023-11-26 12:01:48,264 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ef00311 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:01:48, skipping insertion in model container [2023-11-26 12:01:48,264 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:46" (2/3) ... [2023-11-26 12:01:48,265 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ef00311 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:01:48, skipping insertion in model container [2023-11-26 12:01:48,265 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:01:48" (3/3) ... [2023-11-26 12:01:48,266 INFO L112 eAbstractionObserver]: Analyzing ICFG mix005.opt.i [2023-11-26 12:01:48,277 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-26 12:01:48,289 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 12:01:48,289 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-11-26 12:01:48,289 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-26 12:01:48,352 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-26 12:01:48,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 65 places, 52 transitions, 120 flow [2023-11-26 12:01:48,453 INFO L124 PetriNetUnfolderBase]: 0/48 cut-off events. [2023-11-26 12:01:48,453 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 12:01:48,456 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 7. Compared 127 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 12:01:48,457 INFO L82 GeneralOperation]: Start removeDead. Operand has 65 places, 52 transitions, 120 flow [2023-11-26 12:01:48,467 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 61 places, 48 transitions, 108 flow [2023-11-26 12:01:48,489 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 12:01:48,503 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;@1253dcaa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 12:01:48,503 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2023-11-26 12:01:48,523 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 12:01:48,523 INFO L124 PetriNetUnfolderBase]: 0/15 cut-off events. [2023-11-26 12:01:48,523 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 12:01:48,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:01:48,525 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:01:48,526 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 12:01:48,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:48,535 INFO L85 PathProgramCache]: Analyzing trace with hash 1482848800, now seen corresponding path program 1 times [2023-11-26 12:01:48,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:48,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870280598] [2023-11-26 12:01:48,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:48,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:48,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:48,992 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 12:01:48,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:48,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870280598] [2023-11-26 12:01:48,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870280598] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:01:48,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:01:48,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 12:01:48,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317913600] [2023-11-26 12:01:48,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:01:49,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:01:49,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:49,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:01:49,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:01:49,051 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 52 [2023-11-26 12:01:49,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 48 transitions, 108 flow. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 12:01:49,054 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:01:49,055 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 52 [2023-11-26 12:01:49,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:01:52,780 INFO L124 PetriNetUnfolderBase]: 15277/20542 cut-off events. [2023-11-26 12:01:52,780 INFO L125 PetriNetUnfolderBase]: For 132/132 co-relation queries the response was YES. [2023-11-26 12:01:52,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41332 conditions, 20542 events. 15277/20542 cut-off events. For 132/132 co-relation queries the response was YES. Maximal size of possible extension queue 1869. Compared 137191 event pairs, 7263 based on Foata normal form. 0/14344 useless extension candidates. Maximal degree in co-relation 41320. Up to 20417 conditions per place. [2023-11-26 12:01:53,006 INFO L140 encePairwiseOnDemand]: 39/52 looper letters, 45 selfloop transitions, 5 changer transitions 0/66 dead transitions. [2023-11-26 12:01:53,007 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 66 transitions, 253 flow [2023-11-26 12:01:53,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:01:53,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 12:01:53,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 118 transitions. [2023-11-26 12:01:53,020 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7564102564102564 [2023-11-26 12:01:53,021 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 118 transitions. [2023-11-26 12:01:53,022 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 118 transitions. [2023-11-26 12:01:53,023 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:01:53,025 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 118 transitions. [2023-11-26 12:01:53,028 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 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 12:01:53,031 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 12:01:53,032 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 12:01:53,034 INFO L175 Difference]: Start difference. First operand has 61 places, 48 transitions, 108 flow. Second operand 3 states and 118 transitions. [2023-11-26 12:01:53,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 66 transitions, 253 flow [2023-11-26 12:01:53,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 66 transitions, 246 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-26 12:01:53,044 INFO L231 Difference]: Finished difference. Result has 60 places, 52 transitions, 151 flow [2023-11-26 12:01:53,046 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 12:01:53,051 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -1 predicate places. [2023-11-26 12:01:53,051 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 52 transitions, 151 flow [2023-11-26 12:01:53,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 12:01:53,052 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:01:53,052 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:01:53,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 12:01:53,053 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 12:01:53,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:53,054 INFO L85 PathProgramCache]: Analyzing trace with hash -346058725, now seen corresponding path program 1 times [2023-11-26 12:01:53,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:53,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932376819] [2023-11-26 12:01:53,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:53,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:53,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:53,221 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 12:01:53,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:53,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932376819] [2023-11-26 12:01:53,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932376819] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:01:53,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:01:53,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:01:53,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95812128] [2023-11-26 12:01:53,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:01:53,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 12:01:53,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:53,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 12:01:53,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 12:01:53,229 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 52 [2023-11-26 12:01:53,230 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 52 transitions, 151 flow. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 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 12:01:53,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:01:53,230 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 52 [2023-11-26 12:01:53,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:01:54,952 INFO L124 PetriNetUnfolderBase]: 7641/10386 cut-off events. [2023-11-26 12:01:54,952 INFO L125 PetriNetUnfolderBase]: For 888/888 co-relation queries the response was YES. [2023-11-26 12:01:54,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25147 conditions, 10386 events. 7641/10386 cut-off events. For 888/888 co-relation queries the response was YES. Maximal size of possible extension queue 844. Compared 64389 event pairs, 3143 based on Foata normal form. 0/8384 useless extension candidates. Maximal degree in co-relation 25136. Up to 10260 conditions per place. [2023-11-26 12:01:55,075 INFO L140 encePairwiseOnDemand]: 43/52 looper letters, 41 selfloop transitions, 5 changer transitions 0/62 dead transitions. [2023-11-26 12:01:55,076 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 62 transitions, 261 flow [2023-11-26 12:01:55,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 12:01:55,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 12:01:55,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 130 transitions. [2023-11-26 12:01:55,084 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.625 [2023-11-26 12:01:55,084 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 130 transitions. [2023-11-26 12:01:55,085 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 130 transitions. [2023-11-26 12:01:55,087 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:01:55,088 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 130 transitions. [2023-11-26 12:01:55,090 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 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 12:01:55,093 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 12:01:55,093 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 12:01:55,094 INFO L175 Difference]: Start difference. First operand has 60 places, 52 transitions, 151 flow. Second operand 4 states and 130 transitions. [2023-11-26 12:01:55,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 62 transitions, 261 flow [2023-11-26 12:01:55,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 62 transitions, 256 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 12:01:55,105 INFO L231 Difference]: Finished difference. Result has 58 places, 48 transitions, 140 flow [2023-11-26 12:01:55,106 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 12:01:55,107 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -3 predicate places. [2023-11-26 12:01:55,107 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 48 transitions, 140 flow [2023-11-26 12:01:55,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 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 12:01:55,108 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:01:55,108 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:01:55,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 12:01:55,109 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 12:01:55,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:55,109 INFO L85 PathProgramCache]: Analyzing trace with hash -346058724, now seen corresponding path program 1 times [2023-11-26 12:01:55,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:55,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091593992] [2023-11-26 12:01:55,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:55,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:55,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:55,287 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 12:01:55,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:55,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091593992] [2023-11-26 12:01:55,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091593992] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:01:55,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:01:55,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:01:55,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056427224] [2023-11-26 12:01:55,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:01:55,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 12:01:55,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:55,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 12:01:55,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 12:01:55,297 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 52 [2023-11-26 12:01:55,298 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 48 transitions, 140 flow. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 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 12:01:55,298 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:01:55,298 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 52 [2023-11-26 12:01:55,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:01:56,441 INFO L124 PetriNetUnfolderBase]: 5209/7202 cut-off events. [2023-11-26 12:01:56,441 INFO L125 PetriNetUnfolderBase]: For 978/978 co-relation queries the response was YES. [2023-11-26 12:01:56,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17020 conditions, 7202 events. 5209/7202 cut-off events. For 978/978 co-relation queries the response was YES. Maximal size of possible extension queue 556. Compared 42511 event pairs, 1005 based on Foata normal form. 0/6284 useless extension candidates. Maximal degree in co-relation 17008. Up to 6369 conditions per place. [2023-11-26 12:01:56,521 INFO L140 encePairwiseOnDemand]: 43/52 looper letters, 57 selfloop transitions, 9 changer transitions 0/82 dead transitions. [2023-11-26 12:01:56,521 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 82 transitions, 358 flow [2023-11-26 12:01:56,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 12:01:56,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 12:01:56,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 150 transitions. [2023-11-26 12:01:56,524 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7211538461538461 [2023-11-26 12:01:56,524 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 150 transitions. [2023-11-26 12:01:56,524 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 150 transitions. [2023-11-26 12:01:56,525 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:01:56,525 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 150 transitions. [2023-11-26 12:01:56,526 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 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 12:01:56,527 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 12:01:56,528 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 12:01:56,528 INFO L175 Difference]: Start difference. First operand has 58 places, 48 transitions, 140 flow. Second operand 4 states and 150 transitions. [2023-11-26 12:01:56,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 82 transitions, 358 flow [2023-11-26 12:01:56,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 82 transitions, 352 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 12:01:56,532 INFO L231 Difference]: Finished difference. Result has 60 places, 52 transitions, 192 flow [2023-11-26 12:01:56,532 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 12:01:56,533 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -1 predicate places. [2023-11-26 12:01:56,533 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 52 transitions, 192 flow [2023-11-26 12:01:56,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 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 12:01:56,534 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:01:56,534 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] [2023-11-26 12:01:56,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 12:01:56,535 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 12:01:56,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:56,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1749891022, now seen corresponding path program 1 times [2023-11-26 12:01:56,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:56,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346379925] [2023-11-26 12:01:56,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:56,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:56,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:56,731 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 12:01:56,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:56,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346379925] [2023-11-26 12:01:56,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346379925] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:01:56,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:01:56,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 12:01:56,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829185914] [2023-11-26 12:01:56,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:01:56,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 12:01:56,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:56,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 12:01:56,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-26 12:01:56,739 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 52 [2023-11-26 12:01:56,740 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 52 transitions, 192 flow. Second operand has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 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 12:01:56,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:01:56,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 52 [2023-11-26 12:01:56,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:01:57,611 INFO L124 PetriNetUnfolderBase]: 3481/4850 cut-off events. [2023-11-26 12:01:57,612 INFO L125 PetriNetUnfolderBase]: For 2424/2424 co-relation queries the response was YES. [2023-11-26 12:01:57,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13179 conditions, 4850 events. 3481/4850 cut-off events. For 2424/2424 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 26988 event pairs, 165 based on Foata normal form. 0/4676 useless extension candidates. Maximal degree in co-relation 13166. Up to 2353 conditions per place. [2023-11-26 12:01:57,666 INFO L140 encePairwiseOnDemand]: 43/52 looper letters, 67 selfloop transitions, 13 changer transitions 4/100 dead transitions. [2023-11-26 12:01:57,667 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 100 transitions, 484 flow [2023-11-26 12:01:57,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 12:01:57,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-26 12:01:57,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 188 transitions. [2023-11-26 12:01:57,669 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7230769230769231 [2023-11-26 12:01:57,669 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 188 transitions. [2023-11-26 12:01:57,669 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 188 transitions. [2023-11-26 12:01:57,669 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:01:57,669 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 188 transitions. [2023-11-26 12:01:57,670 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 37.6) internal successors, (188), 5 states have internal predecessors, (188), 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 12:01:57,672 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 12:01:57,672 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 12:01:57,672 INFO L175 Difference]: Start difference. First operand has 60 places, 52 transitions, 192 flow. Second operand 5 states and 188 transitions. [2023-11-26 12:01:57,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 100 transitions, 484 flow [2023-11-26 12:01:57,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 100 transitions, 466 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-11-26 12:01:57,679 INFO L231 Difference]: Finished difference. Result has 63 places, 52 transitions, 216 flow [2023-11-26 12:01:57,679 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 12:01:57,680 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 2 predicate places. [2023-11-26 12:01:57,680 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 52 transitions, 216 flow [2023-11-26 12:01:57,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 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 12:01:57,680 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:01:57,681 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 12:01:57,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-26 12:01:57,681 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 12:01:57,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:57,682 INFO L85 PathProgramCache]: Analyzing trace with hash -1992842119, now seen corresponding path program 1 times [2023-11-26 12:01:57,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:57,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235720346] [2023-11-26 12:01:57,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:57,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:57,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:57,870 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 12:01:57,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:57,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235720346] [2023-11-26 12:01:57,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235720346] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:01:57,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:01:57,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 12:01:57,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196596970] [2023-11-26 12:01:57,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:01:57,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 12:01:57,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:57,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 12:01:57,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-26 12:01:57,884 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 52 [2023-11-26 12:01:57,884 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 52 transitions, 216 flow. Second operand has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 6 states have internal predecessors, (136), 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 12:01:57,885 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:01:57,885 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 52 [2023-11-26 12:01:57,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:01:58,732 INFO L124 PetriNetUnfolderBase]: 2809/3938 cut-off events. [2023-11-26 12:01:58,732 INFO L125 PetriNetUnfolderBase]: For 4592/4592 co-relation queries the response was YES. [2023-11-26 12:01:58,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11390 conditions, 3938 events. 2809/3938 cut-off events. For 4592/4592 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 22276 event pairs, 45 based on Foata normal form. 160/4084 useless extension candidates. Maximal degree in co-relation 11376. Up to 1664 conditions per place. [2023-11-26 12:01:58,754 INFO L140 encePairwiseOnDemand]: 43/52 looper letters, 0 selfloop transitions, 0 changer transitions 92/92 dead transitions. [2023-11-26 12:01:58,754 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 92 transitions, 436 flow [2023-11-26 12:01:58,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 12:01:58,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 12:01:58,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 200 transitions. [2023-11-26 12:01:58,756 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6410256410256411 [2023-11-26 12:01:58,756 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 200 transitions. [2023-11-26 12:01:58,756 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 200 transitions. [2023-11-26 12:01:58,757 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:01:58,757 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 200 transitions. [2023-11-26 12:01:58,758 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 33.333333333333336) internal successors, (200), 6 states have internal predecessors, (200), 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 12:01:58,760 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 12:01:58,760 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 12:01:58,760 INFO L175 Difference]: Start difference. First operand has 63 places, 52 transitions, 216 flow. Second operand 6 states and 200 transitions. [2023-11-26 12:01:58,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 92 transitions, 436 flow [2023-11-26 12:01:58,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 92 transitions, 381 flow, removed 8 selfloop flow, removed 6 redundant places. [2023-11-26 12:01:58,782 INFO L231 Difference]: Finished difference. Result has 58 places, 0 transitions, 0 flow [2023-11-26 12:01:58,783 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 12:01:58,784 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -3 predicate places. [2023-11-26 12:01:58,784 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 0 transitions, 0 flow [2023-11-26 12:01:58,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 6 states have internal predecessors, (136), 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 12:01:58,787 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 20 remaining) [2023-11-26 12:01:58,788 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 20 remaining) [2023-11-26 12:01:58,788 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 20 remaining) [2023-11-26 12:01:58,788 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 20 remaining) [2023-11-26 12:01:58,788 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 20 remaining) [2023-11-26 12:01:58,789 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 20 remaining) [2023-11-26 12:01:58,789 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 20 remaining) [2023-11-26 12:01:58,789 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 20 remaining) [2023-11-26 12:01:58,789 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (11 of 20 remaining) [2023-11-26 12:01:58,790 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 20 remaining) [2023-11-26 12:01:58,790 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 20 remaining) [2023-11-26 12:01:58,790 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 20 remaining) [2023-11-26 12:01:58,790 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 20 remaining) [2023-11-26 12:01:58,791 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 20 remaining) [2023-11-26 12:01:58,791 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 20 remaining) [2023-11-26 12:01:58,791 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 20 remaining) [2023-11-26 12:01:58,791 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 20 remaining) [2023-11-26 12:01:58,792 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 20 remaining) [2023-11-26 12:01:58,792 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 20 remaining) [2023-11-26 12:01:58,792 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 20 remaining) [2023-11-26 12:01:58,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-26 12:01:58,793 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-11-26 12:01:58,799 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-26 12:01:58,799 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-26 12:01:58,808 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 12:01:58 BasicIcfg [2023-11-26 12:01:58,808 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-26 12:01:58,809 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-26 12:01:58,809 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-26 12:01:58,809 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-26 12:01:58,810 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:01:48" (3/4) ... [2023-11-26 12:01:58,811 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-26 12:01:58,815 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-11-26 12:01:58,815 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-11-26 12:01:58,815 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2023-11-26 12:01:58,816 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2023-11-26 12:01:58,822 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 88 nodes and edges [2023-11-26 12:01:58,823 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2023-11-26 12:01:58,823 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-11-26 12:01:58,823 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-26 12:01:58,918 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dfcbde3-ebfc-492e-beaa-4825ed8ca0b3/bin/uautomizer-verify-VRDe98Ueme/witness.graphml [2023-11-26 12:01:58,919 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dfcbde3-ebfc-492e-beaa-4825ed8ca0b3/bin/uautomizer-verify-VRDe98Ueme/witness.yml [2023-11-26 12:01:58,919 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-26 12:01:58,920 INFO L158 Benchmark]: Toolchain (without parser) took 12654.50ms. Allocated memory was 140.5MB in the beginning and 882.9MB in the end (delta: 742.4MB). Free memory was 99.4MB in the beginning and 460.6MB in the end (delta: -361.2MB). Peak memory consumption was 384.1MB. Max. memory is 16.1GB. [2023-11-26 12:01:58,921 INFO L158 Benchmark]: CDTParser took 1.22ms. Allocated memory is still 140.5MB. Free memory is still 115.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 12:01:58,921 INFO L158 Benchmark]: CACSL2BoogieTranslator took 712.41ms. Allocated memory is still 140.5MB. Free memory was 99.2MB in the beginning and 74.5MB in the end (delta: 24.7MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2023-11-26 12:01:58,921 INFO L158 Benchmark]: Boogie Procedure Inliner took 69.97ms. Allocated memory is still 140.5MB. Free memory was 74.5MB in the beginning and 71.4MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-26 12:01:58,922 INFO L158 Benchmark]: Boogie Preprocessor took 96.99ms. Allocated memory is still 140.5MB. Free memory was 71.4MB in the beginning and 67.8MB in the end (delta: 3.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-26 12:01:58,922 INFO L158 Benchmark]: RCFGBuilder took 1108.11ms. Allocated memory is still 140.5MB. Free memory was 67.8MB in the beginning and 68.2MB in the end (delta: -375.8kB). Peak memory consumption was 28.2MB. Max. memory is 16.1GB. [2023-11-26 12:01:58,923 INFO L158 Benchmark]: TraceAbstraction took 10548.81ms. Allocated memory was 140.5MB in the beginning and 882.9MB in the end (delta: 742.4MB). Free memory was 67.4MB in the beginning and 465.9MB in the end (delta: -398.5MB). Peak memory consumption was 565.6MB. Max. memory is 16.1GB. [2023-11-26 12:01:58,923 INFO L158 Benchmark]: Witness Printer took 110.81ms. Allocated memory is still 882.9MB. Free memory was 465.9MB in the beginning and 460.6MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-26 12:01:58,925 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.22ms. Allocated memory is still 140.5MB. Free memory is still 115.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 712.41ms. Allocated memory is still 140.5MB. Free memory was 99.2MB in the beginning and 74.5MB in the end (delta: 24.7MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 69.97ms. Allocated memory is still 140.5MB. Free memory was 74.5MB in the beginning and 71.4MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 96.99ms. Allocated memory is still 140.5MB. Free memory was 71.4MB in the beginning and 67.8MB in the end (delta: 3.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1108.11ms. Allocated memory is still 140.5MB. Free memory was 67.8MB in the beginning and 68.2MB in the end (delta: -375.8kB). Peak memory consumption was 28.2MB. Max. memory is 16.1GB. * TraceAbstraction took 10548.81ms. Allocated memory was 140.5MB in the beginning and 882.9MB in the end (delta: 742.4MB). Free memory was 67.4MB in the beginning and 465.9MB in the end (delta: -398.5MB). Peak memory consumption was 565.6MB. Max. memory is 16.1GB. * Witness Printer took 110.81ms. Allocated memory is still 882.9MB. Free memory was 465.9MB in the beginning and 460.6MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 762]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 762]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 777]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 777]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 808]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 808]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 854]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 854]: 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: 10.4s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 9.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 278 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 268 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 51 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 431 IncrementalHoareTripleChecker+Invalid, 482 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 51 mSolverCounterUnsat, 0 mSDtfsCounter, 431 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, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 87 NumberOfCodeBlocks, 87 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 82 ConstructedInterpolants, 0 QuantifiedInterpolants, 246 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 12:01:58,943 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dfcbde3-ebfc-492e-beaa-4825ed8ca0b3/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