./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/pthread-complex/workstealqueue_mutex-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version c4f91361 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/pthread-complex/workstealqueue_mutex-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 4ef1ebb9985ad6dadbe7cf99c72a7d7cbd507bc2d179a6afec5353fae325d63f --- Real Ultimate output --- This is Ultimate 0.2.3-dev-c4f9136-m [2023-11-23 16:02:22,628 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 16:02:22,674 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-23 16:02:22,685 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 16:02:22,685 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 16:02:22,717 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 16:02:22,724 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 16:02:22,725 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 16:02:22,725 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 16:02:22,725 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 16:02:22,726 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 16:02:22,726 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 16:02:22,726 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 16:02:22,726 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 16:02:22,740 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 16:02:22,740 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 16:02:22,741 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 16:02:22,741 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 16:02:22,741 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 16:02:22,741 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 16:02:22,741 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 16:02:22,742 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 16:02:22,742 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 16:02:22,742 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 16:02:22,742 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-23 16:02:22,743 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 16:02:22,743 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 16:02:22,743 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 16:02:22,743 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 16:02:22,743 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 16:02:22,744 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 16:02:22,744 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 16:02:22,744 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 16:02:22,744 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 16:02:22,744 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 16:02:22,744 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 16:02:22,745 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 16:02:22,745 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 16:02:22,745 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 16:02:22,745 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 16:02:22,745 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 16:02:22,746 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 16:02:22,746 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 16:02:22,746 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 16:02:22,747 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4ef1ebb9985ad6dadbe7cf99c72a7d7cbd507bc2d179a6afec5353fae325d63f [2023-11-23 16:02:22,939 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 16:02:22,964 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 16:02:22,968 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 16:02:22,969 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 16:02:22,969 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 16:02:22,970 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-complex/workstealqueue_mutex-2.i [2023-11-23 16:02:24,080 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 16:02:24,362 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 16:02:24,362 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-complex/workstealqueue_mutex-2.i [2023-11-23 16:02:24,382 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a6ab5056/962d36aadae1443ead2d27186a4fda29/FLAG1b86d9a65 [2023-11-23 16:02:24,392 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a6ab5056/962d36aadae1443ead2d27186a4fda29 [2023-11-23 16:02:24,394 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 16:02:24,396 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 16:02:24,399 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 16:02:24,399 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 16:02:24,402 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 16:02:24,403 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:02:24" (1/1) ... [2023-11-23 16:02:24,403 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59a1470e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:02:24, skipping insertion in model container [2023-11-23 16:02:24,404 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:02:24" (1/1) ... [2023-11-23 16:02:24,453 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 16:02:24,959 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 16:02:24,978 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 16:02:25,053 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 16:02:25,135 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 16:02:25,135 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 16:02:25,141 INFO L206 MainTranslator]: Completed translation [2023-11-23 16:02:25,141 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:02:25 WrapperNode [2023-11-23 16:02:25,141 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 16:02:25,142 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 16:02:25,142 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 16:02:25,142 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 16:02:25,147 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:02:25" (1/1) ... [2023-11-23 16:02:25,187 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:02:25" (1/1) ... [2023-11-23 16:02:25,278 INFO L138 Inliner]: procedures = 490, calls = 133, calls flagged for inlining = 48, calls inlined = 122, statements flattened = 1963 [2023-11-23 16:02:25,278 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 16:02:25,279 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 16:02:25,279 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 16:02:25,279 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 16:02:25,288 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:02:25" (1/1) ... [2023-11-23 16:02:25,288 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:02:25" (1/1) ... [2023-11-23 16:02:25,300 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:02:25" (1/1) ... [2023-11-23 16:02:25,368 INFO L175 MemorySlicer]: Split 287 memory accesses to 9 slices as follows [2, 171, 2, 8, 12, 4, 6, 80, 2]. 60 percent of accesses are in the largest equivalence class. The 28 initializations are split as follows [2, 0, 0, 2, 4, 0, 0, 20, 0]. The 97 writes are split as follows [0, 63, 1, 2, 4, 2, 4, 20, 1]. [2023-11-23 16:02:25,369 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:02:25" (1/1) ... [2023-11-23 16:02:25,369 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:02:25" (1/1) ... [2023-11-23 16:02:25,411 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:02:25" (1/1) ... [2023-11-23 16:02:25,417 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:02:25" (1/1) ... [2023-11-23 16:02:25,423 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:02:25" (1/1) ... [2023-11-23 16:02:25,428 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:02:25" (1/1) ... [2023-11-23 16:02:25,437 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 16:02:25,438 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 16:02:25,438 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 16:02:25,438 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 16:02:25,439 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:02:25" (1/1) ... [2023-11-23 16:02:25,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 16:02:25,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 16:02:25,490 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 16:02:25,560 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 16:02:25,610 INFO L130 BoogieDeclarations]: Found specification of procedure Stealer [2023-11-23 16:02:25,611 INFO L138 BoogieDeclarations]: Found implementation of procedure Stealer [2023-11-23 16:02:25,611 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-23 16:02:25,611 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 16:02:25,611 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-23 16:02:25,611 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-23 16:02:25,612 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-23 16:02:25,613 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-23 16:02:25,613 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-23 16:02:25,613 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-23 16:02:25,613 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-23 16:02:25,614 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2023-11-23 16:02:25,614 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2023-11-23 16:02:25,614 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2023-11-23 16:02:25,614 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-23 16:02:25,614 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 16:02:25,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-23 16:02:25,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-23 16:02:25,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-23 16:02:25,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-23 16:02:25,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2023-11-23 16:02:25,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2023-11-23 16:02:25,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2023-11-23 16:02:25,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2023-11-23 16:02:25,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#8 [2023-11-23 16:02:25,617 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 16:02:25,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 16:02:25,617 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 16:02:25,617 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-23 16:02:25,617 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-23 16:02:25,618 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-23 16:02:25,618 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-23 16:02:25,618 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2023-11-23 16:02:25,618 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2023-11-23 16:02:25,618 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2023-11-23 16:02:25,618 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2023-11-23 16:02:25,618 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#8 [2023-11-23 16:02:25,618 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-23 16:02:25,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-23 16:02:25,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-23 16:02:25,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-23 16:02:25,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-23 16:02:25,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-23 16:02:25,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-23 16:02:25,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2023-11-23 16:02:25,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2023-11-23 16:02:25,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2023-11-23 16:02:25,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-23 16:02:25,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-23 16:02:25,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-23 16:02:25,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-23 16:02:25,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-23 16:02:25,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-23 16:02:25,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-23 16:02:25,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2023-11-23 16:02:25,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2023-11-23 16:02:25,624 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-23 16:02:25,900 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 16:02:25,902 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 16:02:27,366 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 16:02:28,265 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 16:02:28,266 INFO L309 CfgBuilder]: Removed 11 assume(true) statements. [2023-11-23 16:02:28,266 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:02:28 BoogieIcfgContainer [2023-11-23 16:02:28,266 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 16:02:28,268 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 16:02:28,268 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 16:02:28,270 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 16:02:28,271 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 04:02:24" (1/3) ... [2023-11-23 16:02:28,271 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70d258b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:02:28, skipping insertion in model container [2023-11-23 16:02:28,271 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:02:25" (2/3) ... [2023-11-23 16:02:28,271 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70d258b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:02:28, skipping insertion in model container [2023-11-23 16:02:28,272 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:02:28" (3/3) ... [2023-11-23 16:02:28,273 INFO L112 eAbstractionObserver]: Analyzing ICFG workstealqueue_mutex-2.i [2023-11-23 16:02:28,280 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-23 16:02:28,287 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 16:02:28,287 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 90 error locations. [2023-11-23 16:02:28,287 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-23 16:02:28,407 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-23 16:02:28,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 351 places, 374 transitions, 755 flow [2023-11-23 16:02:28,535 INFO L124 PetriNetUnfolderBase]: 47/688 cut-off events. [2023-11-23 16:02:28,535 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-23 16:02:28,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 693 conditions, 688 events. 47/688 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 3735 event pairs, 0 based on Foata normal form. 0/472 useless extension candidates. Maximal degree in co-relation 351. Up to 4 conditions per place. [2023-11-23 16:02:28,547 INFO L82 GeneralOperation]: Start removeDead. Operand has 351 places, 374 transitions, 755 flow [2023-11-23 16:02:28,553 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 351 places, 374 transitions, 755 flow [2023-11-23 16:02:28,560 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 16:02:28,565 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;@6e209f41, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 16:02:28,565 INFO L358 AbstractCegarLoop]: Starting to check reachability of 97 error locations. [2023-11-23 16:02:28,567 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-23 16:02:28,567 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2023-11-23 16:02:28,567 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-23 16:02:28,567 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 16:02:28,568 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-23 16:02:28,568 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [StealerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, StealerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, StealerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 94 more)] === [2023-11-23 16:02:28,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 16:02:28,571 INFO L85 PathProgramCache]: Analyzing trace with hash 166318959, now seen corresponding path program 1 times [2023-11-23 16:02:28,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 16:02:28,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942364555] [2023-11-23 16:02:28,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 16:02:28,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 16:02:28,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 16:02:28,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 16:02:28,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 16:02:28,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942364555] [2023-11-23 16:02:28,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942364555] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 16:02:28,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 16:02:28,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-23 16:02:28,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858152220] [2023-11-23 16:02:28,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 16:02:28,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 16:02:28,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 16:02:28,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 16:02:28,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 16:02:28,886 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 374 [2023-11-23 16:02:28,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 374 transitions, 755 flow. Second operand has 3 states, 3 states have (on average 144.33333333333334) internal successors, (433), 3 states have internal predecessors, (433), 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) [2023-11-23 16:02:28,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 16:02:28,889 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 374 [2023-11-23 16:02:28,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 16:02:30,506 INFO L124 PetriNetUnfolderBase]: 4252/10555 cut-off events. [2023-11-23 16:02:30,506 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-23 16:02:30,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18474 conditions, 10555 events. 4252/10555 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 82608 event pairs, 3287 based on Foata normal form. 1/8710 useless extension candidates. Maximal degree in co-relation 17927. Up to 7909 conditions per place. [2023-11-23 16:02:30,552 INFO L140 encePairwiseOnDemand]: 370/374 looper letters, 227 selfloop transitions, 2 changer transitions 0/372 dead transitions. [2023-11-23 16:02:30,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 372 transitions, 1209 flow [2023-11-23 16:02:30,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 16:02:30,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-23 16:02:30,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 660 transitions. [2023-11-23 16:02:30,567 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5882352941176471 [2023-11-23 16:02:30,567 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 660 transitions. [2023-11-23 16:02:30,568 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 660 transitions. [2023-11-23 16:02:30,571 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 16:02:30,573 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 660 transitions. [2023-11-23 16:02:30,578 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 220.0) internal successors, (660), 3 states have internal predecessors, (660), 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) [2023-11-23 16:02:30,583 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 374.0) internal successors, (1496), 4 states have internal predecessors, (1496), 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) [2023-11-23 16:02:30,584 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 374.0) internal successors, (1496), 4 states have internal predecessors, (1496), 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) [2023-11-23 16:02:30,585 INFO L175 Difference]: Start difference. First operand has 351 places, 374 transitions, 755 flow. Second operand 3 states and 660 transitions. [2023-11-23 16:02:30,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 372 transitions, 1209 flow [2023-11-23 16:02:30,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 372 transitions, 1209 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-23 16:02:30,597 INFO L231 Difference]: Finished difference. Result has 351 places, 372 transitions, 755 flow [2023-11-23 16:02:30,598 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=374, PETRI_DIFFERENCE_MINUEND_FLOW=751, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=372, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=370, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=755, PETRI_PLACES=351, PETRI_TRANSITIONS=372} [2023-11-23 16:02:30,601 INFO L281 CegarLoopForPetriNet]: 351 programPoint places, 0 predicate places. [2023-11-23 16:02:30,602 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 372 transitions, 755 flow [2023-11-23 16:02:30,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 144.33333333333334) internal successors, (433), 3 states have internal predecessors, (433), 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) [2023-11-23 16:02:30,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 16:02:30,602 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 16:02:30,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 16:02:30,603 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [StealerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, StealerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, StealerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 94 more)] === [2023-11-23 16:02:30,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 16:02:30,607 INFO L85 PathProgramCache]: Analyzing trace with hash -1293477606, now seen corresponding path program 1 times [2023-11-23 16:02:30,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 16:02:30,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457993524] [2023-11-23 16:02:30,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 16:02:30,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 16:02:30,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 16:02:30,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 16:02:30,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 16:02:30,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457993524] [2023-11-23 16:02:30,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457993524] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 16:02:30,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 16:02:30,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 16:02:30,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286575923] [2023-11-23 16:02:30,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 16:02:30,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 16:02:30,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 16:02:30,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 16:02:30,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 16:02:30,810 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 374 [2023-11-23 16:02:30,811 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 372 transitions, 755 flow. Second operand has 4 states, 4 states have (on average 139.0) internal successors, (556), 4 states have internal predecessors, (556), 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) [2023-11-23 16:02:30,811 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 16:02:30,811 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 374 [2023-11-23 16:02:30,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 16:02:33,860 INFO L124 PetriNetUnfolderBase]: 8267/19721 cut-off events. [2023-11-23 16:02:33,860 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-23 16:02:33,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34859 conditions, 19721 events. 8267/19721 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 156203 event pairs, 3192 based on Foata normal form. 99/16595 useless extension candidates. Maximal degree in co-relation 34840. Up to 7683 conditions per place. [2023-11-23 16:02:33,941 INFO L140 encePairwiseOnDemand]: 352/374 looper letters, 433 selfloop transitions, 13 changer transitions 2/583 dead transitions. [2023-11-23 16:02:33,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 583 transitions, 2073 flow [2023-11-23 16:02:33,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 16:02:33,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-23 16:02:33,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1010 transitions. [2023-11-23 16:02:33,944 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6751336898395722 [2023-11-23 16:02:33,944 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1010 transitions. [2023-11-23 16:02:33,944 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1010 transitions. [2023-11-23 16:02:33,944 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 16:02:33,945 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1010 transitions. [2023-11-23 16:02:33,946 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 252.5) internal successors, (1010), 4 states have internal predecessors, (1010), 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) [2023-11-23 16:02:33,948 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 374.0) internal successors, (1870), 5 states have internal predecessors, (1870), 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) [2023-11-23 16:02:33,949 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 374.0) internal successors, (1870), 5 states have internal predecessors, (1870), 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) [2023-11-23 16:02:33,949 INFO L175 Difference]: Start difference. First operand has 351 places, 372 transitions, 755 flow. Second operand 4 states and 1010 transitions. [2023-11-23 16:02:33,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 583 transitions, 2073 flow [2023-11-23 16:02:33,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 583 transitions, 2069 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-23 16:02:33,960 INFO L231 Difference]: Finished difference. Result has 354 places, 376 transitions, 825 flow [2023-11-23 16:02:33,961 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=374, PETRI_DIFFERENCE_MINUEND_FLOW=751, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=372, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=359, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=825, PETRI_PLACES=354, PETRI_TRANSITIONS=376} [2023-11-23 16:02:33,961 INFO L281 CegarLoopForPetriNet]: 351 programPoint places, 3 predicate places. [2023-11-23 16:02:33,961 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 376 transitions, 825 flow [2023-11-23 16:02:33,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 139.0) internal successors, (556), 4 states have internal predecessors, (556), 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) [2023-11-23 16:02:33,962 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 16:02:33,962 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 16:02:33,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 16:02:33,962 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [StealerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, StealerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, StealerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 94 more)] === [2023-11-23 16:02:33,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 16:02:33,964 INFO L85 PathProgramCache]: Analyzing trace with hash 460408561, now seen corresponding path program 1 times [2023-11-23 16:02:33,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 16:02:33,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013929256] [2023-11-23 16:02:33,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 16:02:33,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 16:02:33,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 16:02:34,096 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 16:02:34,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 16:02:34,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013929256] [2023-11-23 16:02:34,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013929256] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 16:02:34,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [998809515] [2023-11-23 16:02:34,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 16:02:34,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 16:02:34,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 16:02:34,102 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 16:02:34,121 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 16:02:34,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 16:02:34,277 INFO L262 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 16:02:34,280 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 16:02:34,313 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 16:02:34,313 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 16:02:34,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [998809515] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 16:02:34,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 16:02:34,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2023-11-23 16:02:34,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071358547] [2023-11-23 16:02:34,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 16:02:34,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 16:02:34,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 16:02:34,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 16:02:34,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-23 16:02:34,348 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 374 [2023-11-23 16:02:34,349 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 376 transitions, 825 flow. Second operand has 6 states, 6 states have (on average 138.66666666666666) internal successors, (832), 6 states have internal predecessors, (832), 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) [2023-11-23 16:02:34,349 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 16:02:34,349 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 374 [2023-11-23 16:02:34,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 16:02:37,426 INFO L124 PetriNetUnfolderBase]: 8267/19719 cut-off events. [2023-11-23 16:02:37,426 INFO L125 PetriNetUnfolderBase]: For 207/207 co-relation queries the response was YES. [2023-11-23 16:02:37,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35210 conditions, 19719 events. 8267/19719 cut-off events. For 207/207 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 156179 event pairs, 3192 based on Foata normal form. 1/16578 useless extension candidates. Maximal degree in co-relation 35175. Up to 7551 conditions per place. [2023-11-23 16:02:37,486 INFO L140 encePairwiseOnDemand]: 357/374 looper letters, 449 selfloop transitions, 18 changer transitions 1/603 dead transitions. [2023-11-23 16:02:37,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 603 transitions, 2213 flow [2023-11-23 16:02:37,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 16:02:37,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-23 16:02:37,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1291 transitions. [2023-11-23 16:02:37,489 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5753119429590018 [2023-11-23 16:02:37,489 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1291 transitions. [2023-11-23 16:02:37,489 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1291 transitions. [2023-11-23 16:02:37,490 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 16:02:37,490 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1291 transitions. [2023-11-23 16:02:37,492 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 215.16666666666666) internal successors, (1291), 6 states have internal predecessors, (1291), 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) [2023-11-23 16:02:37,495 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 374.0) internal successors, (2618), 7 states have internal predecessors, (2618), 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) [2023-11-23 16:02:37,495 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 374.0) internal successors, (2618), 7 states have internal predecessors, (2618), 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) [2023-11-23 16:02:37,496 INFO L175 Difference]: Start difference. First operand has 354 places, 376 transitions, 825 flow. Second operand 6 states and 1291 transitions. [2023-11-23 16:02:37,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 603 transitions, 2213 flow [2023-11-23 16:02:37,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 603 transitions, 2213 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-23 16:02:37,503 INFO L231 Difference]: Finished difference. Result has 357 places, 375 transitions, 857 flow [2023-11-23 16:02:37,503 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=374, PETRI_DIFFERENCE_MINUEND_FLOW=821, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=357, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=857, PETRI_PLACES=357, PETRI_TRANSITIONS=375} [2023-11-23 16:02:37,504 INFO L281 CegarLoopForPetriNet]: 351 programPoint places, 6 predicate places. [2023-11-23 16:02:37,504 INFO L495 AbstractCegarLoop]: Abstraction has has 357 places, 375 transitions, 857 flow [2023-11-23 16:02:37,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 138.66666666666666) internal successors, (832), 6 states have internal predecessors, (832), 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) [2023-11-23 16:02:37,505 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 16:02:37,505 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 16:02:37,535 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-23 16:02:37,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 16:02:37,717 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [StealerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, StealerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, StealerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 94 more)] === [2023-11-23 16:02:37,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 16:02:37,718 INFO L85 PathProgramCache]: Analyzing trace with hash 1387768719, now seen corresponding path program 1 times [2023-11-23 16:02:37,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 16:02:37,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166901839] [2023-11-23 16:02:37,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 16:02:37,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 16:02:37,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 16:02:37,806 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 16:02:37,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 16:02:37,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166901839] [2023-11-23 16:02:37,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166901839] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 16:02:37,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 16:02:37,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 16:02:37,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442340522] [2023-11-23 16:02:37,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 16:02:37,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 16:02:37,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 16:02:37,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 16:02:37,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 16:02:37,814 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 374 [2023-11-23 16:02:37,816 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 375 transitions, 857 flow. Second operand has 3 states, 3 states have (on average 146.33333333333334) internal successors, (439), 3 states have internal predecessors, (439), 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) [2023-11-23 16:02:37,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 16:02:37,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 374 [2023-11-23 16:02:37,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 16:02:40,325 INFO L124 PetriNetUnfolderBase]: 8135/19596 cut-off events. [2023-11-23 16:02:40,325 INFO L125 PetriNetUnfolderBase]: For 406/406 co-relation queries the response was YES. [2023-11-23 16:02:40,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35023 conditions, 19596 events. 8135/19596 cut-off events. For 406/406 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 156258 event pairs, 6365 based on Foata normal form. 1/16469 useless extension candidates. Maximal degree in co-relation 34986. Up to 14873 conditions per place. [2023-11-23 16:02:40,444 INFO L140 encePairwiseOnDemand]: 371/374 looper letters, 229 selfloop transitions, 4 changer transitions 0/374 dead transitions. [2023-11-23 16:02:40,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 374 transitions, 1319 flow [2023-11-23 16:02:40,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 16:02:40,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-23 16:02:40,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 658 transitions. [2023-11-23 16:02:40,446 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5864527629233511 [2023-11-23 16:02:40,446 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 658 transitions. [2023-11-23 16:02:40,446 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 658 transitions. [2023-11-23 16:02:40,447 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 16:02:40,447 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 658 transitions. [2023-11-23 16:02:40,448 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 219.33333333333334) internal successors, (658), 3 states have internal predecessors, (658), 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) [2023-11-23 16:02:40,449 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 374.0) internal successors, (1496), 4 states have internal predecessors, (1496), 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) [2023-11-23 16:02:40,450 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 374.0) internal successors, (1496), 4 states have internal predecessors, (1496), 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) [2023-11-23 16:02:40,450 INFO L175 Difference]: Start difference. First operand has 357 places, 375 transitions, 857 flow. Second operand 3 states and 658 transitions. [2023-11-23 16:02:40,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 374 transitions, 1319 flow [2023-11-23 16:02:40,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 374 transitions, 1287 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-11-23 16:02:40,458 INFO L231 Difference]: Finished difference. Result has 354 places, 374 transitions, 829 flow [2023-11-23 16:02:40,459 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=374, PETRI_DIFFERENCE_MINUEND_FLOW=821, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=370, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=829, PETRI_PLACES=354, PETRI_TRANSITIONS=374} [2023-11-23 16:02:40,460 INFO L281 CegarLoopForPetriNet]: 351 programPoint places, 3 predicate places. [2023-11-23 16:02:40,460 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 374 transitions, 829 flow [2023-11-23 16:02:40,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 146.33333333333334) internal successors, (439), 3 states have internal predecessors, (439), 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) [2023-11-23 16:02:40,461 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 16:02:40,461 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 16:02:40,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-23 16:02:40,461 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [StealerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, StealerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, StealerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 94 more)] === [2023-11-23 16:02:40,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 16:02:40,461 INFO L85 PathProgramCache]: Analyzing trace with hash -2082257109, now seen corresponding path program 1 times [2023-11-23 16:02:40,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 16:02:40,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016983778] [2023-11-23 16:02:40,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 16:02:40,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 16:02:40,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 16:02:40,556 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 16:02:40,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 16:02:40,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016983778] [2023-11-23 16:02:40,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016983778] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 16:02:40,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [964799577] [2023-11-23 16:02:40,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 16:02:40,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 16:02:40,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 16:02:40,558 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 16:02:40,595 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 16:02:40,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 16:02:40,732 INFO L262 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-23 16:02:40,733 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 16:02:40,746 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 16:02:40,746 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 16:02:40,766 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 16:02:40,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [964799577] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 16:02:40,766 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 16:02:40,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-11-23 16:02:40,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825392618] [2023-11-23 16:02:40,767 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 16:02:40,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-23 16:02:40,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 16:02:40,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-23 16:02:40,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-23 16:02:40,831 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 374 [2023-11-23 16:02:40,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 374 transitions, 829 flow. Second operand has 10 states, 10 states have (on average 137.9) internal successors, (1379), 10 states have internal predecessors, (1379), 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) [2023-11-23 16:02:40,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 16:02:40,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 374 [2023-11-23 16:02:40,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 16:02:44,041 INFO L124 PetriNetUnfolderBase]: 8245/19673 cut-off events. [2023-11-23 16:02:44,042 INFO L125 PetriNetUnfolderBase]: For 314/314 co-relation queries the response was YES. [2023-11-23 16:02:44,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35072 conditions, 19673 events. 8245/19673 cut-off events. For 314/314 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 155484 event pairs, 3211 based on Foata normal form. 62/16596 useless extension candidates. Maximal degree in co-relation 35020. Up to 7488 conditions per place. [2023-11-23 16:02:44,137 INFO L140 encePairwiseOnDemand]: 350/374 looper letters, 463 selfloop transitions, 27 changer transitions 1/625 dead transitions. [2023-11-23 16:02:44,137 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 625 transitions, 2313 flow [2023-11-23 16:02:44,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 16:02:44,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-23 16:02:44,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1584 transitions. [2023-11-23 16:02:44,141 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5294117647058824 [2023-11-23 16:02:44,141 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1584 transitions. [2023-11-23 16:02:44,141 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1584 transitions. [2023-11-23 16:02:44,142 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 16:02:44,142 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1584 transitions. [2023-11-23 16:02:44,145 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 198.0) internal successors, (1584), 8 states have internal predecessors, (1584), 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) [2023-11-23 16:02:44,148 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 374.0) internal successors, (3366), 9 states have internal predecessors, (3366), 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) [2023-11-23 16:02:44,149 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 374.0) internal successors, (3366), 9 states have internal predecessors, (3366), 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) [2023-11-23 16:02:44,149 INFO L175 Difference]: Start difference. First operand has 354 places, 374 transitions, 829 flow. Second operand 8 states and 1584 transitions. [2023-11-23 16:02:44,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 625 transitions, 2313 flow [2023-11-23 16:02:44,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 625 transitions, 2299 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-23 16:02:44,157 INFO L231 Difference]: Finished difference. Result has 357 places, 378 transitions, 909 flow [2023-11-23 16:02:44,158 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=374, PETRI_DIFFERENCE_MINUEND_FLOW=803, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=371, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=346, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=909, PETRI_PLACES=357, PETRI_TRANSITIONS=378} [2023-11-23 16:02:44,160 INFO L281 CegarLoopForPetriNet]: 351 programPoint places, 6 predicate places. [2023-11-23 16:02:44,160 INFO L495 AbstractCegarLoop]: Abstraction has has 357 places, 378 transitions, 909 flow [2023-11-23 16:02:44,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 137.9) internal successors, (1379), 10 states have internal predecessors, (1379), 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) [2023-11-23 16:02:44,161 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 16:02:44,161 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 16:02:44,187 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-23 16:02:44,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 16:02:44,373 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [StealerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, StealerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, StealerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 94 more)] === [2023-11-23 16:02:44,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 16:02:44,374 INFO L85 PathProgramCache]: Analyzing trace with hash 1744432075, now seen corresponding path program 2 times [2023-11-23 16:02:44,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 16:02:44,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522308525] [2023-11-23 16:02:44,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 16:02:44,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 16:02:44,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 16:02:44,501 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-23 16:02:44,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 16:02:44,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522308525] [2023-11-23 16:02:44,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522308525] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 16:02:44,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 16:02:44,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 16:02:44,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875898366] [2023-11-23 16:02:44,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 16:02:44,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 16:02:44,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 16:02:44,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 16:02:44,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 16:02:44,523 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 374 [2023-11-23 16:02:44,523 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 378 transitions, 909 flow. Second operand has 4 states, 4 states have (on average 140.25) internal successors, (561), 4 states have internal predecessors, (561), 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) [2023-11-23 16:02:44,523 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 16:02:44,523 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 374 [2023-11-23 16:02:44,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 16:02:47,439 INFO L124 PetriNetUnfolderBase]: 8201/19599 cut-off events. [2023-11-23 16:02:47,439 INFO L125 PetriNetUnfolderBase]: For 734/734 co-relation queries the response was YES. [2023-11-23 16:02:47,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35369 conditions, 19599 events. 8201/19599 cut-off events. For 734/734 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 155169 event pairs, 3173 based on Foata normal form. 40/16514 useless extension candidates. Maximal degree in co-relation 35242. Up to 7556 conditions per place. [2023-11-23 16:02:47,508 INFO L140 encePairwiseOnDemand]: 359/374 looper letters, 453 selfloop transitions, 13 changer transitions 0/600 dead transitions. [2023-11-23 16:02:47,508 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 600 transitions, 2285 flow [2023-11-23 16:02:47,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 16:02:47,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-23 16:02:47,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1013 transitions. [2023-11-23 16:02:47,510 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6771390374331551 [2023-11-23 16:02:47,511 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1013 transitions. [2023-11-23 16:02:47,511 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1013 transitions. [2023-11-23 16:02:47,511 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 16:02:47,511 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1013 transitions. [2023-11-23 16:02:47,513 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 253.25) internal successors, (1013), 4 states have internal predecessors, (1013), 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) [2023-11-23 16:02:47,514 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 374.0) internal successors, (1870), 5 states have internal predecessors, (1870), 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) [2023-11-23 16:02:47,515 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 374.0) internal successors, (1870), 5 states have internal predecessors, (1870), 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) [2023-11-23 16:02:47,515 INFO L175 Difference]: Start difference. First operand has 357 places, 378 transitions, 909 flow. Second operand 4 states and 1013 transitions. [2023-11-23 16:02:47,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 600 transitions, 2285 flow [2023-11-23 16:02:47,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 600 transitions, 2247 flow, removed 6 selfloop flow, removed 3 redundant places. [2023-11-23 16:02:47,523 INFO L231 Difference]: Finished difference. Result has 355 places, 376 transitions, 893 flow [2023-11-23 16:02:47,523 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=374, PETRI_DIFFERENCE_MINUEND_FLOW=867, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=376, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=363, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=893, PETRI_PLACES=355, PETRI_TRANSITIONS=376} [2023-11-23 16:02:47,523 INFO L281 CegarLoopForPetriNet]: 351 programPoint places, 4 predicate places. [2023-11-23 16:02:47,524 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 376 transitions, 893 flow [2023-11-23 16:02:47,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 140.25) internal successors, (561), 4 states have internal predecessors, (561), 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) [2023-11-23 16:02:47,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 16:02:47,524 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 16:02:47,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-23 16:02:47,525 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [StealerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, StealerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, StealerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 94 more)] === [2023-11-23 16:02:47,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 16:02:47,525 INFO L85 PathProgramCache]: Analyzing trace with hash -723030532, now seen corresponding path program 1 times [2023-11-23 16:02:47,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 16:02:47,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062551362] [2023-11-23 16:02:47,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 16:02:47,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 16:02:47,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 16:02:47,664 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 16:02:47,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 16:02:47,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062551362] [2023-11-23 16:02:47,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062551362] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 16:02:47,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [376418803] [2023-11-23 16:02:47,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 16:02:47,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 16:02:47,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 16:02:47,668 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 16:02:47,682 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-23 16:02:47,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 16:02:47,876 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-23 16:02:47,877 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 16:02:47,911 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 16:02:47,911 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 16:02:47,955 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 16:02:47,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [376418803] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 16:02:47,955 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 16:02:47,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 11 [2023-11-23 16:02:47,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232417550] [2023-11-23 16:02:47,956 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 16:02:47,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-23 16:02:47,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 16:02:47,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-23 16:02:47,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-11-23 16:02:48,021 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 374 [2023-11-23 16:02:48,022 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 376 transitions, 893 flow. Second operand has 11 states, 11 states have (on average 137.8181818181818) internal successors, (1516), 11 states have internal predecessors, (1516), 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) [2023-11-23 16:02:48,022 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 16:02:48,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 374 [2023-11-23 16:02:48,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 16:02:50,837 INFO L124 PetriNetUnfolderBase]: 8245/19671 cut-off events. [2023-11-23 16:02:50,837 INFO L125 PetriNetUnfolderBase]: For 574/574 co-relation queries the response was YES. [2023-11-23 16:02:50,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35468 conditions, 19671 events. 8245/19671 cut-off events. For 574/574 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 155476 event pairs, 3211 based on Foata normal form. 1/16535 useless extension candidates. Maximal degree in co-relation 35333. Up to 7488 conditions per place. [2023-11-23 16:02:50,917 INFO L140 encePairwiseOnDemand]: 354/374 looper letters, 463 selfloop transitions, 29 changer transitions 0/624 dead transitions. [2023-11-23 16:02:50,918 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 624 transitions, 2383 flow [2023-11-23 16:02:50,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-23 16:02:50,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-23 16:02:50,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1853 transitions. [2023-11-23 16:02:50,921 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4954545454545455 [2023-11-23 16:02:50,921 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1853 transitions. [2023-11-23 16:02:50,922 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1853 transitions. [2023-11-23 16:02:50,922 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 16:02:50,922 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1853 transitions. [2023-11-23 16:02:50,925 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 185.3) internal successors, (1853), 10 states have internal predecessors, (1853), 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) [2023-11-23 16:02:50,928 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 374.0) internal successors, (4114), 11 states have internal predecessors, (4114), 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) [2023-11-23 16:02:50,929 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 374.0) internal successors, (4114), 11 states have internal predecessors, (4114), 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) [2023-11-23 16:02:50,929 INFO L175 Difference]: Start difference. First operand has 355 places, 376 transitions, 893 flow. Second operand 10 states and 1853 transitions. [2023-11-23 16:02:50,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 624 transitions, 2383 flow [2023-11-23 16:02:50,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 624 transitions, 2369 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-23 16:02:50,937 INFO L231 Difference]: Finished difference. Result has 363 places, 378 transitions, 973 flow [2023-11-23 16:02:50,938 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=374, PETRI_DIFFERENCE_MINUEND_FLOW=879, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=376, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=348, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=973, PETRI_PLACES=363, PETRI_TRANSITIONS=378} [2023-11-23 16:02:50,938 INFO L281 CegarLoopForPetriNet]: 351 programPoint places, 12 predicate places. [2023-11-23 16:02:50,938 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 378 transitions, 973 flow [2023-11-23 16:02:50,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 137.8181818181818) internal successors, (1516), 11 states have internal predecessors, (1516), 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) [2023-11-23 16:02:50,939 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 16:02:50,939 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 16:02:50,969 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-23 16:02:51,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 16:02:51,151 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [StealerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, StealerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, StealerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 94 more)] === [2023-11-23 16:02:51,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 16:02:51,152 INFO L85 PathProgramCache]: Analyzing trace with hash 480180037, now seen corresponding path program 2 times [2023-11-23 16:02:51,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 16:02:51,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916928291] [2023-11-23 16:02:51,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 16:02:51,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 16:02:51,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 16:02:51,184 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 16:02:51,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 16:02:51,220 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-23 16:02:51,220 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-23 16:02:51,221 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (96 of 97 remaining) [2023-11-23 16:02:51,222 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location StealerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (95 of 97 remaining) [2023-11-23 16:02:51,222 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location StealerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (94 of 97 remaining) [2023-11-23 16:02:51,223 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location StealerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (93 of 97 remaining) [2023-11-23 16:02:51,223 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location StealerErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (92 of 97 remaining) [2023-11-23 16:02:51,223 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location StealerErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (91 of 97 remaining) [2023-11-23 16:02:51,223 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location StealerErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (90 of 97 remaining) [2023-11-23 16:02:51,223 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (89 of 97 remaining) [2023-11-23 16:02:51,223 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (88 of 97 remaining) [2023-11-23 16:02:51,223 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (87 of 97 remaining) [2023-11-23 16:02:51,224 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (86 of 97 remaining) [2023-11-23 16:02:51,224 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (85 of 97 remaining) [2023-11-23 16:02:51,224 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (84 of 97 remaining) [2023-11-23 16:02:51,224 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (83 of 97 remaining) [2023-11-23 16:02:51,224 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (82 of 97 remaining) [2023-11-23 16:02:51,224 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr68ASSERT_VIOLATIONINTEGER_OVERFLOW (81 of 97 remaining) [2023-11-23 16:02:51,225 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr82ASSERT_VIOLATIONINTEGER_OVERFLOW (80 of 97 remaining) [2023-11-23 16:02:51,225 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr69ASSERT_VIOLATIONINTEGER_OVERFLOW (79 of 97 remaining) [2023-11-23 16:02:51,225 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr80ASSERT_VIOLATIONINTEGER_OVERFLOW (78 of 97 remaining) [2023-11-23 16:02:51,225 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr83ASSERT_VIOLATIONINTEGER_OVERFLOW (77 of 97 remaining) [2023-11-23 16:02:51,225 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr81ASSERT_VIOLATIONINTEGER_OVERFLOW (76 of 97 remaining) [2023-11-23 16:02:51,225 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (75 of 97 remaining) [2023-11-23 16:02:51,225 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (74 of 97 remaining) [2023-11-23 16:02:51,226 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (73 of 97 remaining) [2023-11-23 16:02:51,226 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (72 of 97 remaining) [2023-11-23 16:02:51,226 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr70ASSERT_VIOLATIONINTEGER_OVERFLOW (71 of 97 remaining) [2023-11-23 16:02:51,226 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr71ASSERT_VIOLATIONINTEGER_OVERFLOW (70 of 97 remaining) [2023-11-23 16:02:51,226 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr76ASSERT_VIOLATIONINTEGER_OVERFLOW (69 of 97 remaining) [2023-11-23 16:02:51,226 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr78ASSERT_VIOLATIONINTEGER_OVERFLOW (68 of 97 remaining) [2023-11-23 16:02:51,226 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr77ASSERT_VIOLATIONINTEGER_OVERFLOW (67 of 97 remaining) [2023-11-23 16:02:51,227 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW (66 of 97 remaining) [2023-11-23 16:02:51,227 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr79ASSERT_VIOLATIONINTEGER_OVERFLOW (65 of 97 remaining) [2023-11-23 16:02:51,227 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW (64 of 97 remaining) [2023-11-23 16:02:51,227 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW (63 of 97 remaining) [2023-11-23 16:02:51,227 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW (62 of 97 remaining) [2023-11-23 16:02:51,227 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW (61 of 97 remaining) [2023-11-23 16:02:51,227 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW (60 of 97 remaining) [2023-11-23 16:02:51,228 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr72ASSERT_VIOLATIONINTEGER_OVERFLOW (59 of 97 remaining) [2023-11-23 16:02:51,228 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW (58 of 97 remaining) [2023-11-23 16:02:51,228 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr73ASSERT_VIOLATIONINTEGER_OVERFLOW (57 of 97 remaining) [2023-11-23 16:02:51,228 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW (56 of 97 remaining) [2023-11-23 16:02:51,228 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW (55 of 97 remaining) [2023-11-23 16:02:51,228 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW (54 of 97 remaining) [2023-11-23 16:02:51,228 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW (53 of 97 remaining) [2023-11-23 16:02:51,229 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW (52 of 97 remaining) [2023-11-23 16:02:51,229 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr74ASSERT_VIOLATIONINTEGER_OVERFLOW (51 of 97 remaining) [2023-11-23 16:02:51,229 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW (50 of 97 remaining) [2023-11-23 16:02:51,229 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr37ASSERT_VIOLATIONINTEGER_OVERFLOW (49 of 97 remaining) [2023-11-23 16:02:51,229 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr75ASSERT_VIOLATIONINTEGER_OVERFLOW (48 of 97 remaining) [2023-11-23 16:02:51,229 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW (47 of 97 remaining) [2023-11-23 16:02:51,229 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW (46 of 97 remaining) [2023-11-23 16:02:51,230 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW (45 of 97 remaining) [2023-11-23 16:02:51,230 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW (44 of 97 remaining) [2023-11-23 16:02:51,230 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW (43 of 97 remaining) [2023-11-23 16:02:51,230 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW (42 of 97 remaining) [2023-11-23 16:02:51,230 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW (41 of 97 remaining) [2023-11-23 16:02:51,230 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW (40 of 97 remaining) [2023-11-23 16:02:51,230 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW (39 of 97 remaining) [2023-11-23 16:02:51,231 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW (38 of 97 remaining) [2023-11-23 16:02:51,231 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW (37 of 97 remaining) [2023-11-23 16:02:51,231 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 97 remaining) [2023-11-23 16:02:51,231 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr38ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 97 remaining) [2023-11-23 16:02:51,231 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr39ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 97 remaining) [2023-11-23 16:02:51,231 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr56ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 97 remaining) [2023-11-23 16:02:51,231 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr57ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 97 remaining) [2023-11-23 16:02:51,232 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr40ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 97 remaining) [2023-11-23 16:02:51,232 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr41ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 97 remaining) [2023-11-23 16:02:51,232 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr58ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 97 remaining) [2023-11-23 16:02:51,232 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr59ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 97 remaining) [2023-11-23 16:02:51,232 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr42ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 97 remaining) [2023-11-23 16:02:51,232 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr64ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 97 remaining) [2023-11-23 16:02:51,232 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr43ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 97 remaining) [2023-11-23 16:02:51,233 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr66ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 97 remaining) [2023-11-23 16:02:51,233 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr65ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 97 remaining) [2023-11-23 16:02:51,233 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr54ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 97 remaining) [2023-11-23 16:02:51,233 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr46ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 97 remaining) [2023-11-23 16:02:51,233 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr44ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 97 remaining) [2023-11-23 16:02:51,233 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr67ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 97 remaining) [2023-11-23 16:02:51,233 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr55ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 97 remaining) [2023-11-23 16:02:51,234 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr47ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 97 remaining) [2023-11-23 16:02:51,234 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr50ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 97 remaining) [2023-11-23 16:02:51,234 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr52ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 97 remaining) [2023-11-23 16:02:51,234 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr45ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 97 remaining) [2023-11-23 16:02:51,234 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr48ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 97 remaining) [2023-11-23 16:02:51,234 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr51ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 97 remaining) [2023-11-23 16:02:51,234 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr53ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 97 remaining) [2023-11-23 16:02:51,235 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr49ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 97 remaining) [2023-11-23 16:02:51,235 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr60ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 97 remaining) [2023-11-23 16:02:51,235 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr61ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 97 remaining) [2023-11-23 16:02:51,235 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr62ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 97 remaining) [2023-11-23 16:02:51,235 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr63ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 97 remaining) [2023-11-23 16:02:51,235 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location StealerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 97 remaining) [2023-11-23 16:02:51,235 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location StealerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 97 remaining) [2023-11-23 16:02:51,236 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location StealerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 97 remaining) [2023-11-23 16:02:51,236 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location StealerErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 97 remaining) [2023-11-23 16:02:51,236 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location StealerErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 97 remaining) [2023-11-23 16:02:51,236 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location StealerErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 97 remaining) [2023-11-23 16:02:51,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-23 16:02:51,236 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1] [2023-11-23 16:02:51,238 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-23 16:02:51,238 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-23 16:02:51,296 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-23 16:02:51,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 383 places, 408 transitions, 832 flow [2023-11-23 16:02:51,375 INFO L124 PetriNetUnfolderBase]: 74/1061 cut-off events. [2023-11-23 16:02:51,376 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-23 16:02:51,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1073 conditions, 1061 events. 74/1061 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 6901 event pairs, 0 based on Foata normal form. 0/727 useless extension candidates. Maximal degree in co-relation 690. Up to 8 conditions per place. [2023-11-23 16:02:51,381 INFO L82 GeneralOperation]: Start removeDead. Operand has 383 places, 408 transitions, 832 flow [2023-11-23 16:02:51,387 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 383 places, 408 transitions, 832 flow [2023-11-23 16:02:51,387 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 16:02:51,388 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;@6e209f41, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 16:02:51,388 INFO L358 AbstractCegarLoop]: Starting to check reachability of 103 error locations. [2023-11-23 16:02:51,389 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-23 16:02:51,389 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2023-11-23 16:02:51,389 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-23 16:02:51,389 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 16:02:51,390 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-23 16:02:51,390 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [StealerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, StealerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, StealerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2023-11-23 16:02:51,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 16:02:51,390 INFO L85 PathProgramCache]: Analyzing trace with hash 178878831, now seen corresponding path program 1 times [2023-11-23 16:02:51,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 16:02:51,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611377924] [2023-11-23 16:02:51,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 16:02:51,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 16:02:51,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 16:02:51,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 16:02:51,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 16:02:51,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611377924] [2023-11-23 16:02:51,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611377924] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 16:02:51,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 16:02:51,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-23 16:02:51,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600835767] [2023-11-23 16:02:51,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 16:02:51,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 16:02:51,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 16:02:51,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 16:02:51,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 16:02:51,432 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 408 [2023-11-23 16:02:51,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 408 transitions, 832 flow. Second operand has 3 states, 3 states have (on average 154.33333333333334) internal successors, (463), 3 states have internal predecessors, (463), 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) [2023-11-23 16:02:51,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 16:02:51,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 408 [2023-11-23 16:02:51,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand