./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread-wmm/safe027_rmo.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32cbc29e-f0dc-4d08-889d-49cc6c9fc9e5/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32cbc29e-f0dc-4d08-889d-49cc6c9fc9e5/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32cbc29e-f0dc-4d08-889d-49cc6c9fc9e5/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32cbc29e-f0dc-4d08-889d-49cc6c9fc9e5/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe027_rmo.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32cbc29e-f0dc-4d08-889d-49cc6c9fc9e5/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32cbc29e-f0dc-4d08-889d-49cc6c9fc9e5/bin/uautomizer-verify-VRDe98Ueme --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 85e3ce8f111292d815206f012225ed7eff4e108dc07a389f6fa2d1590522afb0 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 10:46:03,578 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 10:46:03,680 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32cbc29e-f0dc-4d08-889d-49cc6c9fc9e5/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-26 10:46:03,686 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 10:46:03,686 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 10:46:03,724 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 10:46:03,725 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 10:46:03,726 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 10:46:03,727 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 10:46:03,727 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 10:46:03,728 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 10:46:03,728 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 10:46:03,729 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 10:46:03,729 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 10:46:03,730 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 10:46:03,731 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 10:46:03,731 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 10:46:03,732 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 10:46:03,732 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 10:46:03,733 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 10:46:03,733 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 10:46:03,740 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 10:46:03,740 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 10:46:03,741 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 10:46:03,741 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-26 10:46:03,742 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 10:46:03,742 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 10:46:03,742 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 10:46:03,743 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 10:46:03,743 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 10:46:03,743 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 10:46:03,744 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 10:46:03,744 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 10:46:03,745 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:46:03,745 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 10:46:03,745 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 10:46:03,746 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 10:46:03,746 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 10:46:03,746 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 10:46:03,747 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 10:46:03,747 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 10:46:03,748 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 10:46:03,748 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 10:46:03,749 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 10:46:03,749 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32cbc29e-f0dc-4d08-889d-49cc6c9fc9e5/bin/uautomizer-verify-VRDe98Ueme/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32cbc29e-f0dc-4d08-889d-49cc6c9fc9e5/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 85e3ce8f111292d815206f012225ed7eff4e108dc07a389f6fa2d1590522afb0 [2023-11-26 10:46:04,054 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 10:46:04,084 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 10:46:04,087 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 10:46:04,088 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 10:46:04,088 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 10:46:04,090 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32cbc29e-f0dc-4d08-889d-49cc6c9fc9e5/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/pthread-wmm/safe027_rmo.i [2023-11-26 10:46:07,177 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 10:46:07,518 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 10:46:07,532 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32cbc29e-f0dc-4d08-889d-49cc6c9fc9e5/sv-benchmarks/c/pthread-wmm/safe027_rmo.i [2023-11-26 10:46:07,549 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32cbc29e-f0dc-4d08-889d-49cc6c9fc9e5/bin/uautomizer-verify-VRDe98Ueme/data/b240c6806/f02a2ab675f246539077e35168184caf/FLAGf06240370 [2023-11-26 10:46:07,563 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32cbc29e-f0dc-4d08-889d-49cc6c9fc9e5/bin/uautomizer-verify-VRDe98Ueme/data/b240c6806/f02a2ab675f246539077e35168184caf [2023-11-26 10:46:07,566 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 10:46:07,567 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 10:46:07,569 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 10:46:07,569 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 10:46:07,573 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 10:46:07,574 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:46:07" (1/1) ... [2023-11-26 10:46:07,580 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b247fe8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:07, skipping insertion in model container [2023-11-26 10:46:07,580 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:46:07" (1/1) ... [2023-11-26 10:46:07,638 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 10:46:08,108 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:46:08,120 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 10:46:08,229 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:46:08,263 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 10:46:08,263 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 10:46:08,270 INFO L206 MainTranslator]: Completed translation [2023-11-26 10:46:08,271 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:08 WrapperNode [2023-11-26 10:46:08,271 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 10:46:08,272 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 10:46:08,272 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 10:46:08,273 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 10:46:08,280 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:08" (1/1) ... [2023-11-26 10:46:08,300 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:08" (1/1) ... [2023-11-26 10:46:08,331 INFO L138 Inliner]: procedures = 177, calls = 83, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 155 [2023-11-26 10:46:08,331 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 10:46:08,332 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 10:46:08,332 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 10:46:08,332 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 10:46:08,344 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:08" (1/1) ... [2023-11-26 10:46:08,344 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:08" (1/1) ... [2023-11-26 10:46:08,349 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:08" (1/1) ... [2023-11-26 10:46:08,371 INFO L175 MemorySlicer]: Split 25 memory accesses to 6 slices as follows [2, 19, 1, 1, 1, 1]. 76 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1, 0, 0, 0, 0]. The 11 writes are split as follows [0, 7, 1, 1, 1, 1]. [2023-11-26 10:46:08,371 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:08" (1/1) ... [2023-11-26 10:46:08,371 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:08" (1/1) ... [2023-11-26 10:46:08,388 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:08" (1/1) ... [2023-11-26 10:46:08,391 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:08" (1/1) ... [2023-11-26 10:46:08,395 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:08" (1/1) ... [2023-11-26 10:46:08,398 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:08" (1/1) ... [2023-11-26 10:46:08,421 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 10:46:08,422 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 10:46:08,422 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 10:46:08,422 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 10:46:08,423 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:08" (1/1) ... [2023-11-26 10:46:08,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:46:08,450 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32cbc29e-f0dc-4d08-889d-49cc6c9fc9e5/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:46:08,466 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32cbc29e-f0dc-4d08-889d-49cc6c9fc9e5/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 10:46:08,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32cbc29e-f0dc-4d08-889d-49cc6c9fc9e5/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 10:46:08,504 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-26 10:46:08,504 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-26 10:46:08,504 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-26 10:46:08,504 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-26 10:46:08,504 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-26 10:46:08,504 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-26 10:46:08,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-26 10:46:08,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-26 10:46:08,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-26 10:46:08,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-26 10:46:08,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-26 10:46:08,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-26 10:46:08,506 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-26 10:46:08,506 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 10:46:08,506 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 10:46:08,506 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 10:46:08,506 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-26 10:46:08,507 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-26 10:46:08,507 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-26 10:46:08,508 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-26 10:46:08,508 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-26 10:46:08,508 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-26 10:46:08,508 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-11-26 10:46:08,508 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-11-26 10:46:08,508 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 10:46:08,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-26 10:46:08,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-26 10:46:08,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-26 10:46:08,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-26 10:46:08,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-26 10:46:08,510 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-26 10:46:08,510 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 10:46:08,510 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 10:46:08,512 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-26 10:46:08,693 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 10:46:08,695 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 10:46:09,198 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 10:46:09,640 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 10:46:09,640 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-26 10:46:09,641 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:46:09 BoogieIcfgContainer [2023-11-26 10:46:09,641 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 10:46:09,645 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 10:46:09,646 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 10:46:09,649 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 10:46:09,649 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 10:46:07" (1/3) ... [2023-11-26 10:46:09,650 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@127679e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:46:09, skipping insertion in model container [2023-11-26 10:46:09,650 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:08" (2/3) ... [2023-11-26 10:46:09,652 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@127679e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:46:09, skipping insertion in model container [2023-11-26 10:46:09,652 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:46:09" (3/3) ... [2023-11-26 10:46:09,653 INFO L112 eAbstractionObserver]: Analyzing ICFG safe027_rmo.i [2023-11-26 10:46:09,662 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-26 10:46:09,673 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 10:46:09,673 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-11-26 10:46:09,673 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-26 10:46:09,750 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-26 10:46:09,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 61 places, 48 transitions, 112 flow [2023-11-26 10:46:09,844 INFO L124 PetriNetUnfolderBase]: 0/44 cut-off events. [2023-11-26 10:46:09,845 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 10:46:09,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57 conditions, 44 events. 0/44 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 113 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2023-11-26 10:46:09,847 INFO L82 GeneralOperation]: Start removeDead. Operand has 61 places, 48 transitions, 112 flow [2023-11-26 10:46:09,860 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 57 places, 44 transitions, 100 flow [2023-11-26 10:46:09,877 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 10:46:09,888 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;@17ea8d23, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 10:46:09,895 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2023-11-26 10:46:09,906 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 10:46:09,908 INFO L124 PetriNetUnfolderBase]: 0/15 cut-off events. [2023-11-26 10:46:09,908 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 10:46:09,910 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:46:09,910 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:46:09,911 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-26 10:46:09,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:46:09,916 INFO L85 PathProgramCache]: Analyzing trace with hash -1377850923, now seen corresponding path program 1 times [2023-11-26 10:46:09,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:46:09,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331759944] [2023-11-26 10:46:09,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:09,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:46:10,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:10,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:46:10,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:46:10,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331759944] [2023-11-26 10:46:10,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331759944] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:46:10,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:46:10,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 10:46:10,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622554683] [2023-11-26 10:46:10,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:46:10,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:46:10,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:46:10,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:46:10,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:46:10,538 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2023-11-26 10:46:10,540 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 44 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:10,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:46:10,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2023-11-26 10:46:10,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:46:15,165 INFO L124 PetriNetUnfolderBase]: 19313/25853 cut-off events. [2023-11-26 10:46:15,165 INFO L125 PetriNetUnfolderBase]: For 152/152 co-relation queries the response was YES. [2023-11-26 10:46:15,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52007 conditions, 25853 events. 19313/25853 cut-off events. For 152/152 co-relation queries the response was YES. Maximal size of possible extension queue 2039. Compared 168624 event pairs, 8821 based on Foata normal form. 0/18353 useless extension candidates. Maximal degree in co-relation 51995. Up to 25617 conditions per place. [2023-11-26 10:46:15,441 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 47 selfloop transitions, 5 changer transitions 0/63 dead transitions. [2023-11-26 10:46:15,441 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 63 transitions, 251 flow [2023-11-26 10:46:15,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:46:15,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 10:46:15,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 105 transitions. [2023-11-26 10:46:15,454 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7291666666666666 [2023-11-26 10:46:15,455 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 105 transitions. [2023-11-26 10:46:15,455 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 105 transitions. [2023-11-26 10:46:15,456 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:46:15,458 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 105 transitions. [2023-11-26 10:46:15,462 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:15,466 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 48.0) internal successors, (192), 4 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:15,467 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 48.0) internal successors, (192), 4 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:15,469 INFO L175 Difference]: Start difference. First operand has 57 places, 44 transitions, 100 flow. Second operand 3 states and 105 transitions. [2023-11-26 10:46:15,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 63 transitions, 251 flow [2023-11-26 10:46:15,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 63 transitions, 244 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-26 10:46:15,482 INFO L231 Difference]: Finished difference. Result has 56 places, 48 transitions, 143 flow [2023-11-26 10:46:15,484 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=143, PETRI_PLACES=56, PETRI_TRANSITIONS=48} [2023-11-26 10:46:15,488 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -1 predicate places. [2023-11-26 10:46:15,488 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 48 transitions, 143 flow [2023-11-26 10:46:15,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:15,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:46:15,489 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:46:15,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 10:46:15,490 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-26 10:46:15,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:46:15,491 INFO L85 PathProgramCache]: Analyzing trace with hash -1323587188, now seen corresponding path program 1 times [2023-11-26 10:46:15,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:46:15,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666657676] [2023-11-26 10:46:15,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:15,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:46:15,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:15,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:46:15,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:46:15,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666657676] [2023-11-26 10:46:15,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666657676] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:46:15,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:46:15,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:46:15,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867492304] [2023-11-26 10:46:15,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:46:15,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:46:15,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:46:15,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:46:15,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:46:15,660 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2023-11-26 10:46:15,661 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 48 transitions, 143 flow. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:15,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:46:15,661 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2023-11-26 10:46:15,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:46:18,224 INFO L124 PetriNetUnfolderBase]: 9919/13399 cut-off events. [2023-11-26 10:46:18,225 INFO L125 PetriNetUnfolderBase]: For 1085/1090 co-relation queries the response was YES. [2023-11-26 10:46:18,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32222 conditions, 13399 events. 9919/13399 cut-off events. For 1085/1090 co-relation queries the response was YES. Maximal size of possible extension queue 940. Compared 80814 event pairs, 3871 based on Foata normal form. 2/10965 useless extension candidates. Maximal degree in co-relation 32211. Up to 13162 conditions per place. [2023-11-26 10:46:18,354 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 43 selfloop transitions, 5 changer transitions 0/59 dead transitions. [2023-11-26 10:46:18,355 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 59 transitions, 259 flow [2023-11-26 10:46:18,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:46:18,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 10:46:18,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 112 transitions. [2023-11-26 10:46:18,361 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2023-11-26 10:46:18,367 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 112 transitions. [2023-11-26 10:46:18,369 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 112 transitions. [2023-11-26 10:46:18,371 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:46:18,371 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 112 transitions. [2023-11-26 10:46:18,373 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:18,375 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:18,375 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:18,376 INFO L175 Difference]: Start difference. First operand has 56 places, 48 transitions, 143 flow. Second operand 4 states and 112 transitions. [2023-11-26 10:46:18,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 59 transitions, 259 flow [2023-11-26 10:46:18,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 59 transitions, 254 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 10:46:18,380 INFO L231 Difference]: Finished difference. Result has 54 places, 44 transitions, 132 flow [2023-11-26 10:46:18,380 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=132, PETRI_PLACES=54, PETRI_TRANSITIONS=44} [2023-11-26 10:46:18,381 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -3 predicate places. [2023-11-26 10:46:18,382 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 44 transitions, 132 flow [2023-11-26 10:46:18,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:18,382 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:46:18,383 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:46:18,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 10:46:18,383 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-26 10:46:18,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:46:18,384 INFO L85 PathProgramCache]: Analyzing trace with hash -1323587187, now seen corresponding path program 1 times [2023-11-26 10:46:18,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:46:18,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849289012] [2023-11-26 10:46:18,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:18,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:46:18,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:18,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:46:18,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:46:18,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849289012] [2023-11-26 10:46:18,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849289012] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:46:18,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:46:18,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:46:18,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544656317] [2023-11-26 10:46:18,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:46:18,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:46:18,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:46:18,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:46:18,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:46:18,596 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2023-11-26 10:46:18,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 44 transitions, 132 flow. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:18,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:46:18,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2023-11-26 10:46:18,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:46:20,485 INFO L124 PetriNetUnfolderBase]: 6817/9349 cut-off events. [2023-11-26 10:46:20,485 INFO L125 PetriNetUnfolderBase]: For 1273/1278 co-relation queries the response was YES. [2023-11-26 10:46:20,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21975 conditions, 9349 events. 6817/9349 cut-off events. For 1273/1278 co-relation queries the response was YES. Maximal size of possible extension queue 606. Compared 53212 event pairs, 1269 based on Foata normal form. 2/8259 useless extension candidates. Maximal degree in co-relation 21963. Up to 7917 conditions per place. [2023-11-26 10:46:20,577 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 60 selfloop transitions, 9 changer transitions 0/80 dead transitions. [2023-11-26 10:46:20,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 80 transitions, 360 flow [2023-11-26 10:46:20,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:46:20,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 10:46:20,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 133 transitions. [2023-11-26 10:46:20,583 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6927083333333334 [2023-11-26 10:46:20,584 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 133 transitions. [2023-11-26 10:46:20,584 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 133 transitions. [2023-11-26 10:46:20,584 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:46:20,584 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 133 transitions. [2023-11-26 10:46:20,587 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:20,589 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:20,590 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:20,590 INFO L175 Difference]: Start difference. First operand has 54 places, 44 transitions, 132 flow. Second operand 4 states and 133 transitions. [2023-11-26 10:46:20,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 80 transitions, 360 flow [2023-11-26 10:46:20,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 80 transitions, 354 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 10:46:20,595 INFO L231 Difference]: Finished difference. Result has 56 places, 48 transitions, 184 flow [2023-11-26 10:46:20,596 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=184, PETRI_PLACES=56, PETRI_TRANSITIONS=48} [2023-11-26 10:46:20,597 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -1 predicate places. [2023-11-26 10:46:20,598 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 48 transitions, 184 flow [2023-11-26 10:46:20,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:20,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:46:20,598 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:46:20,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 10:46:20,599 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting P2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-26 10:46:20,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:46:20,600 INFO L85 PathProgramCache]: Analyzing trace with hash -926533254, now seen corresponding path program 1 times [2023-11-26 10:46:20,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:46:20,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622207196] [2023-11-26 10:46:20,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:20,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:46:20,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:20,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:46:20,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:46:20,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622207196] [2023-11-26 10:46:20,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622207196] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:46:20,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:46:20,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:46:20,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110855047] [2023-11-26 10:46:20,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:46:20,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 10:46:20,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:46:20,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 10:46:20,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:46:20,821 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2023-11-26 10:46:20,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 48 transitions, 184 flow. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:20,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:46:20,822 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2023-11-26 10:46:20,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:46:22,032 INFO L124 PetriNetUnfolderBase]: 4729/6517 cut-off events. [2023-11-26 10:46:22,032 INFO L125 PetriNetUnfolderBase]: For 3211/3221 co-relation queries the response was YES. [2023-11-26 10:46:22,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17488 conditions, 6517 events. 4729/6517 cut-off events. For 3211/3221 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 35347 event pairs, 265 based on Foata normal form. 4/6317 useless extension candidates. Maximal degree in co-relation 17475. Up to 2833 conditions per place. [2023-11-26 10:46:22,083 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 71 selfloop transitions, 13 changer transitions 4/99 dead transitions. [2023-11-26 10:46:22,084 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 99 transitions, 490 flow [2023-11-26 10:46:22,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 10:46:22,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-26 10:46:22,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 167 transitions. [2023-11-26 10:46:22,086 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6958333333333333 [2023-11-26 10:46:22,086 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 167 transitions. [2023-11-26 10:46:22,086 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 167 transitions. [2023-11-26 10:46:22,087 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:46:22,087 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 167 transitions. [2023-11-26 10:46:22,088 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 33.4) internal successors, (167), 5 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:22,089 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 48.0) internal successors, (288), 6 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:22,089 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 48.0) internal successors, (288), 6 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:22,089 INFO L175 Difference]: Start difference. First operand has 56 places, 48 transitions, 184 flow. Second operand 5 states and 167 transitions. [2023-11-26 10:46:22,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 99 transitions, 490 flow [2023-11-26 10:46:22,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 99 transitions, 472 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-11-26 10:46:22,096 INFO L231 Difference]: Finished difference. Result has 59 places, 48 transitions, 208 flow [2023-11-26 10:46:22,096 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=208, PETRI_PLACES=59, PETRI_TRANSITIONS=48} [2023-11-26 10:46:22,097 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 2 predicate places. [2023-11-26 10:46:22,098 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 48 transitions, 208 flow [2023-11-26 10:46:22,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:22,098 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:46:22,098 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:46:22,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-26 10:46:22,099 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting P3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-26 10:46:22,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:46:22,099 INFO L85 PathProgramCache]: Analyzing trace with hash 1421589026, now seen corresponding path program 1 times [2023-11-26 10:46:22,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:46:22,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96269484] [2023-11-26 10:46:22,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:22,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:46:22,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:22,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:46:22,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:46:22,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96269484] [2023-11-26 10:46:22,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96269484] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:46:22,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:46:22,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 10:46:22,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168336552] [2023-11-26 10:46:22,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:46:22,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 10:46:22,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:46:22,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 10:46:22,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-26 10:46:22,279 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2023-11-26 10:46:22,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 48 transitions, 208 flow. Second operand has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:22,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:46:22,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2023-11-26 10:46:22,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:46:23,341 INFO L124 PetriNetUnfolderBase]: 3913/5413 cut-off events. [2023-11-26 10:46:23,341 INFO L125 PetriNetUnfolderBase]: For 5909/5919 co-relation queries the response was YES. [2023-11-26 10:46:23,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15305 conditions, 5413 events. 3913/5413 cut-off events. For 5909/5919 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 29387 event pairs, 121 based on Foata normal form. 196/5597 useless extension candidates. Maximal degree in co-relation 15291. Up to 2252 conditions per place. [2023-11-26 10:46:23,369 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 0 selfloop transitions, 0 changer transitions 91/91 dead transitions. [2023-11-26 10:46:23,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 91 transitions, 442 flow [2023-11-26 10:46:23,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 10:46:23,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 10:46:23,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 174 transitions. [2023-11-26 10:46:23,371 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6041666666666666 [2023-11-26 10:46:23,371 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 174 transitions. [2023-11-26 10:46:23,371 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 174 transitions. [2023-11-26 10:46:23,372 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:46:23,372 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 174 transitions. [2023-11-26 10:46:23,373 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 29.0) internal successors, (174), 6 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:23,374 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 48.0) internal successors, (336), 7 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:23,374 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 48.0) internal successors, (336), 7 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:23,375 INFO L175 Difference]: Start difference. First operand has 59 places, 48 transitions, 208 flow. Second operand 6 states and 174 transitions. [2023-11-26 10:46:23,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 91 transitions, 442 flow [2023-11-26 10:46:23,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 91 transitions, 387 flow, removed 8 selfloop flow, removed 6 redundant places. [2023-11-26 10:46:23,460 INFO L231 Difference]: Finished difference. Result has 54 places, 0 transitions, 0 flow [2023-11-26 10:46:23,461 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=54, PETRI_TRANSITIONS=0} [2023-11-26 10:46:23,462 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -3 predicate places. [2023-11-26 10:46:23,462 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 0 transitions, 0 flow [2023-11-26 10:46:23,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:23,465 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 20 remaining) [2023-11-26 10:46:23,465 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 20 remaining) [2023-11-26 10:46:23,466 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 20 remaining) [2023-11-26 10:46:23,466 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 20 remaining) [2023-11-26 10:46:23,466 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 20 remaining) [2023-11-26 10:46:23,466 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 20 remaining) [2023-11-26 10:46:23,467 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 20 remaining) [2023-11-26 10:46:23,467 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 20 remaining) [2023-11-26 10:46:23,467 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (11 of 20 remaining) [2023-11-26 10:46:23,467 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 20 remaining) [2023-11-26 10:46:23,468 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 20 remaining) [2023-11-26 10:46:23,468 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 20 remaining) [2023-11-26 10:46:23,468 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 20 remaining) [2023-11-26 10:46:23,468 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 20 remaining) [2023-11-26 10:46:23,469 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 20 remaining) [2023-11-26 10:46:23,469 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 20 remaining) [2023-11-26 10:46:23,469 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 20 remaining) [2023-11-26 10:46:23,469 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 20 remaining) [2023-11-26 10:46:23,469 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 20 remaining) [2023-11-26 10:46:23,470 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 20 remaining) [2023-11-26 10:46:23,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-26 10:46:23,470 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-11-26 10:46:23,476 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-26 10:46:23,477 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-26 10:46:23,482 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 10:46:23 BasicIcfg [2023-11-26 10:46:23,482 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-26 10:46:23,483 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-26 10:46:23,483 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-26 10:46:23,483 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-26 10:46:23,484 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:46:09" (3/4) ... [2023-11-26 10:46:23,486 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-26 10:46:23,489 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-11-26 10:46:23,489 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-11-26 10:46:23,489 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2023-11-26 10:46:23,489 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2023-11-26 10:46:23,496 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 81 nodes and edges [2023-11-26 10:46:23,496 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2023-11-26 10:46:23,497 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-11-26 10:46:23,497 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-26 10:46:23,590 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32cbc29e-f0dc-4d08-889d-49cc6c9fc9e5/bin/uautomizer-verify-VRDe98Ueme/witness.graphml [2023-11-26 10:46:23,591 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32cbc29e-f0dc-4d08-889d-49cc6c9fc9e5/bin/uautomizer-verify-VRDe98Ueme/witness.yml [2023-11-26 10:46:23,591 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-26 10:46:23,592 INFO L158 Benchmark]: Toolchain (without parser) took 16024.49ms. Allocated memory was 192.9MB in the beginning and 1.8GB in the end (delta: 1.6GB). Free memory was 161.4MB in the beginning and 646.2MB in the end (delta: -484.8MB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. [2023-11-26 10:46:23,592 INFO L158 Benchmark]: CDTParser took 1.28ms. Allocated memory is still 130.0MB. Free memory is still 103.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 10:46:23,593 INFO L158 Benchmark]: CACSL2BoogieTranslator took 702.93ms. Allocated memory is still 192.9MB. Free memory was 161.4MB in the beginning and 136.2MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2023-11-26 10:46:23,593 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.05ms. Allocated memory is still 192.9MB. Free memory was 136.2MB in the beginning and 134.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-26 10:46:23,594 INFO L158 Benchmark]: Boogie Preprocessor took 88.83ms. Allocated memory is still 192.9MB. Free memory was 134.1MB in the beginning and 129.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-26 10:46:23,594 INFO L158 Benchmark]: RCFGBuilder took 1219.50ms. Allocated memory is still 192.9MB. Free memory was 129.9MB in the beginning and 115.0MB in the end (delta: 14.9MB). Peak memory consumption was 47.1MB. Max. memory is 16.1GB. [2023-11-26 10:46:23,594 INFO L158 Benchmark]: TraceAbstraction took 13837.08ms. Allocated memory was 192.9MB in the beginning and 1.8GB in the end (delta: 1.6GB). Free memory was 115.0MB in the beginning and 651.5MB in the end (delta: -536.4MB). Peak memory consumption was 1.0GB. Max. memory is 16.1GB. [2023-11-26 10:46:23,595 INFO L158 Benchmark]: Witness Printer took 108.19ms. Allocated memory is still 1.8GB. Free memory was 650.4MB in the beginning and 646.2MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-26 10:46:23,597 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.28ms. Allocated memory is still 130.0MB. Free memory is still 103.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 702.93ms. Allocated memory is still 192.9MB. Free memory was 161.4MB in the beginning and 136.2MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 59.05ms. Allocated memory is still 192.9MB. Free memory was 136.2MB in the beginning and 134.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 88.83ms. Allocated memory is still 192.9MB. Free memory was 134.1MB in the beginning and 129.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1219.50ms. Allocated memory is still 192.9MB. Free memory was 129.9MB in the beginning and 115.0MB in the end (delta: 14.9MB). Peak memory consumption was 47.1MB. Max. memory is 16.1GB. * TraceAbstraction took 13837.08ms. Allocated memory was 192.9MB in the beginning and 1.8GB in the end (delta: 1.6GB). Free memory was 115.0MB in the beginning and 651.5MB in the end (delta: -536.4MB). Peak memory consumption was 1.0GB. Max. memory is 16.1GB. * Witness Printer took 108.19ms. Allocated memory is still 1.8GB. Free memory was 650.4MB in the beginning and 646.2MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 791]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 791]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 803]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 803]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 831]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 831]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 848]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 848]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 87 locations, 20 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 13.7s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 12.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 229 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 219 mSDsluCounter, 2 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 44 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 448 IncrementalHoareTripleChecker+Invalid, 492 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 44 mSolverCounterUnsat, 2 mSDtfsCounter, 448 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=208occurred in iteration=4, InterpolantAutomatonStates: 22, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 79 NumberOfCodeBlocks, 79 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 74 ConstructedInterpolants, 0 QuantifiedInterpolants, 222 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-26 10:46:23,627 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32cbc29e-f0dc-4d08-889d-49cc6c9fc9e5/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE