./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread-wmm/mix021.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version cf1a7837 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_11214383-ca6b-47cd-9249-71e436533528/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11214383-ca6b-47cd-9249-71e436533528/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11214383-ca6b-47cd-9249-71e436533528/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11214383-ca6b-47cd-9249-71e436533528/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/mix021.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11214383-ca6b-47cd-9249-71e436533528/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11214383-ca6b-47cd-9249-71e436533528/bin/uautomizer-verify-uTZkv6EMXl --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 576d0750cd121d18ae295ddde1dd1649436f79f5ff3834655e4b6c15fd1260db --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:11:48,355 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:11:48,460 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11214383-ca6b-47cd-9249-71e436533528/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-12 02:11:48,471 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:11:48,471 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:11:48,515 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:11:48,516 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:11:48,517 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:11:48,518 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:11:48,523 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:11:48,524 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:11:48,525 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:11:48,525 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:11:48,527 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:11:48,527 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:11:48,528 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:11:48,528 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:11:48,528 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:11:48,529 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:11:48,529 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:11:48,529 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:11:48,530 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:11:48,530 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-12 02:11:48,531 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 02:11:48,531 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:11:48,531 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:11:48,532 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:11:48,533 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:11:48,533 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:11:48,533 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:11:48,535 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:11:48,535 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:11:48,535 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:11:48,535 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:11:48,536 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:11:48,536 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:11:48,536 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:11:48,536 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:11:48,536 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:11:48,537 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:11:48,537 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:11:48,537 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_11214383-ca6b-47cd-9249-71e436533528/bin/uautomizer-verify-uTZkv6EMXl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11214383-ca6b-47cd-9249-71e436533528/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 576d0750cd121d18ae295ddde1dd1649436f79f5ff3834655e4b6c15fd1260db [2023-11-12 02:11:48,802 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:11:48,823 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:11:48,826 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:11:48,827 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:11:48,828 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:11:48,829 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11214383-ca6b-47cd-9249-71e436533528/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/pthread-wmm/mix021.opt.i [2023-11-12 02:11:51,871 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:11:52,179 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:11:52,180 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11214383-ca6b-47cd-9249-71e436533528/sv-benchmarks/c/pthread-wmm/mix021.opt.i [2023-11-12 02:11:52,197 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11214383-ca6b-47cd-9249-71e436533528/bin/uautomizer-verify-uTZkv6EMXl/data/e80b7ce14/69a29fa56203455f8f5ce650ef91262c/FLAG0c21a2444 [2023-11-12 02:11:52,212 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11214383-ca6b-47cd-9249-71e436533528/bin/uautomizer-verify-uTZkv6EMXl/data/e80b7ce14/69a29fa56203455f8f5ce650ef91262c [2023-11-12 02:11:52,215 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:11:52,216 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:11:52,218 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:11:52,218 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:11:52,223 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:11:52,224 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:11:52" (1/1) ... [2023-11-12 02:11:52,225 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4db8d15b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:11:52, skipping insertion in model container [2023-11-12 02:11:52,225 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:11:52" (1/1) ... [2023-11-12 02:11:52,275 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:11:52,693 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:11:52,710 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:11:52,777 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:11:52,816 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:11:52,816 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:11:52,824 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:11:52,825 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:11:52 WrapperNode [2023-11-12 02:11:52,825 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:11:52,826 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:11:52,826 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:11:52,827 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:11:52,835 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:11:52" (1/1) ... [2023-11-12 02:11:52,867 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:11:52" (1/1) ... [2023-11-12 02:11:52,905 INFO L138 Inliner]: procedures = 177, calls = 70, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 171 [2023-11-12 02:11:52,905 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:11:52,906 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:11:52,906 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:11:52,907 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:11:52,922 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:11:52" (1/1) ... [2023-11-12 02:11:52,922 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:11:52" (1/1) ... [2023-11-12 02:11:52,927 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:11:52" (1/1) ... [2023-11-12 02:11:52,927 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:11:52" (1/1) ... [2023-11-12 02:11:52,939 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:11:52" (1/1) ... [2023-11-12 02:11:52,941 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:11:52" (1/1) ... [2023-11-12 02:11:52,944 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:11:52" (1/1) ... [2023-11-12 02:11:52,946 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:11:52" (1/1) ... [2023-11-12 02:11:52,951 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:11:52,952 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:11:52,952 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:11:52,953 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:11:52,953 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:11:52" (1/1) ... [2023-11-12 02:11:52,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:11:52,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11214383-ca6b-47cd-9249-71e436533528/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:11:53,009 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11214383-ca6b-47cd-9249-71e436533528/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:11:53,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11214383-ca6b-47cd-9249-71e436533528/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:11:53,055 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 02:11:53,055 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-12 02:11:53,055 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:11:53,055 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 02:11:53,056 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:11:53,056 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-12 02:11:53,056 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-12 02:11:53,056 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-12 02:11:53,056 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-12 02:11:53,057 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-12 02:11:53,057 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-12 02:11:53,057 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-11-12 02:11:53,059 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-11-12 02:11:53,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:11:53,060 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-12 02:11:53,060 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:11:53,060 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:11:53,062 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-12 02:11:53,327 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:11:53,329 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:11:53,784 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:11:53,969 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:11:53,970 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-12 02:11:53,972 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:11:53 BoogieIcfgContainer [2023-11-12 02:11:53,973 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:11:53,976 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:11:53,976 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:11:53,980 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:11:53,980 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:11:52" (1/3) ... [2023-11-12 02:11:53,981 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e69c897 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:11:53, skipping insertion in model container [2023-11-12 02:11:53,981 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:11:52" (2/3) ... [2023-11-12 02:11:53,982 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e69c897 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:11:53, skipping insertion in model container [2023-11-12 02:11:53,982 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:11:53" (3/3) ... [2023-11-12 02:11:53,983 INFO L112 eAbstractionObserver]: Analyzing ICFG mix021.opt.i [2023-11-12 02:11:53,993 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-12 02:11:54,005 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:11:54,005 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-11-12 02:11:54,005 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 02:11:54,073 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-12 02:11:54,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 151 places, 141 transitions, 298 flow [2023-11-12 02:11:54,179 INFO L124 PetriNetUnfolderBase]: 3/137 cut-off events. [2023-11-12 02:11:54,179 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:11:54,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150 conditions, 137 events. 3/137 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 99 event pairs, 0 based on Foata normal form. 0/126 useless extension candidates. Maximal degree in co-relation 100. Up to 2 conditions per place. [2023-11-12 02:11:54,187 INFO L82 GeneralOperation]: Start removeDead. Operand has 151 places, 141 transitions, 298 flow [2023-11-12 02:11:54,192 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 147 places, 137 transitions, 286 flow [2023-11-12 02:11:54,196 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:11:54,226 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 147 places, 137 transitions, 286 flow [2023-11-12 02:11:54,231 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 147 places, 137 transitions, 286 flow [2023-11-12 02:11:54,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 147 places, 137 transitions, 286 flow [2023-11-12 02:11:54,314 INFO L124 PetriNetUnfolderBase]: 3/137 cut-off events. [2023-11-12 02:11:54,315 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:11:54,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150 conditions, 137 events. 3/137 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 98 event pairs, 0 based on Foata normal form. 0/126 useless extension candidates. Maximal degree in co-relation 100. Up to 2 conditions per place. [2023-11-12 02:11:54,323 INFO L119 LiptonReduction]: Number of co-enabled transitions 4188 [2023-11-12 02:11:59,309 INFO L134 LiptonReduction]: Checked pairs total: 12410 [2023-11-12 02:11:59,311 INFO L136 LiptonReduction]: Total number of compositions: 114 [2023-11-12 02:11:59,327 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:11:59,334 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;@53ce52be, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:11:59,334 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2023-11-12 02:11:59,338 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:11:59,338 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2023-11-12 02:11:59,338 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:11:59,339 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:11:59,339 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-12 02:11:59,340 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-12 02:11:59,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:11:59,345 INFO L85 PathProgramCache]: Analyzing trace with hash 601596621, now seen corresponding path program 1 times [2023-11-12 02:11:59,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:11:59,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078590001] [2023-11-12 02:11:59,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:11:59,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:11:59,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:11:59,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:11:59,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:11:59,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078590001] [2023-11-12 02:11:59,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078590001] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:11:59,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:11:59,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:11:59,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213569684] [2023-11-12 02:11:59,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:11:59,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:11:59,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:11:59,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:11:59,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:11:59,788 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 255 [2023-11-12 02:11:59,795 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 35 transitions, 82 flow. Second operand has 3 states, 3 states have (on average 116.33333333333333) internal successors, (349), 3 states have internal predecessors, (349), 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) [2023-11-12 02:11:59,795 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:11:59,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 255 [2023-11-12 02:11:59,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:12:01,873 INFO L124 PetriNetUnfolderBase]: 8376/11703 cut-off events. [2023-11-12 02:12:01,874 INFO L125 PetriNetUnfolderBase]: For 89/89 co-relation queries the response was YES. [2023-11-12 02:12:01,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23570 conditions, 11703 events. 8376/11703 cut-off events. For 89/89 co-relation queries the response was YES. Maximal size of possible extension queue 674. Compared 67168 event pairs, 2316 based on Foata normal form. 0/8274 useless extension candidates. Maximal degree in co-relation 23558. Up to 10804 conditions per place. [2023-11-12 02:12:01,987 INFO L140 encePairwiseOnDemand]: 241/255 looper letters, 47 selfloop transitions, 5 changer transitions 0/55 dead transitions. [2023-11-12 02:12:01,987 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 55 transitions, 235 flow [2023-11-12 02:12:01,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:12:01,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:12:02,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 407 transitions. [2023-11-12 02:12:02,009 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5320261437908497 [2023-11-12 02:12:02,010 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 407 transitions. [2023-11-12 02:12:02,010 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 407 transitions. [2023-11-12 02:12:02,013 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:12:02,016 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 407 transitions. [2023-11-12 02:12:02,022 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 135.66666666666666) internal successors, (407), 3 states have internal predecessors, (407), 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) [2023-11-12 02:12:02,028 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 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) [2023-11-12 02:12:02,030 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 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) [2023-11-12 02:12:02,032 INFO L175 Difference]: Start difference. First operand has 47 places, 35 transitions, 82 flow. Second operand 3 states and 407 transitions. [2023-11-12 02:12:02,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 55 transitions, 235 flow [2023-11-12 02:12:02,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 55 transitions, 228 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-12 02:12:02,039 INFO L231 Difference]: Finished difference. Result has 46 places, 38 transitions, 123 flow [2023-11-12 02:12:02,041 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=123, PETRI_PLACES=46, PETRI_TRANSITIONS=38} [2023-11-12 02:12:02,045 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, -1 predicate places. [2023-11-12 02:12:02,045 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 38 transitions, 123 flow [2023-11-12 02:12:02,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 116.33333333333333) internal successors, (349), 3 states have internal predecessors, (349), 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) [2023-11-12 02:12:02,046 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:12:02,046 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:12:02,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:12:02,047 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-12 02:12:02,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:02,047 INFO L85 PathProgramCache]: Analyzing trace with hash 445086697, now seen corresponding path program 1 times [2023-11-12 02:12:02,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:02,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893080630] [2023-11-12 02:12:02,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:02,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:02,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:02,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:12:02,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:02,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893080630] [2023-11-12 02:12:02,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893080630] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:02,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:12:02,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:12:02,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857732450] [2023-11-12 02:12:02,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:02,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:12:02,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:02,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:12:02,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:12:02,251 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 255 [2023-11-12 02:12:02,252 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 38 transitions, 123 flow. Second operand has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 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) [2023-11-12 02:12:02,252 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:12:02,252 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 255 [2023-11-12 02:12:02,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:12:03,601 INFO L124 PetriNetUnfolderBase]: 4789/6710 cut-off events. [2023-11-12 02:12:03,601 INFO L125 PetriNetUnfolderBase]: For 374/374 co-relation queries the response was YES. [2023-11-12 02:12:03,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16621 conditions, 6710 events. 4789/6710 cut-off events. For 374/374 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 34613 event pairs, 1132 based on Foata normal form. 0/5570 useless extension candidates. Maximal degree in co-relation 16610. Up to 5810 conditions per place. [2023-11-12 02:12:03,670 INFO L140 encePairwiseOnDemand]: 246/255 looper letters, 43 selfloop transitions, 5 changer transitions 0/51 dead transitions. [2023-11-12 02:12:03,670 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 51 transitions, 243 flow [2023-11-12 02:12:03,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:12:03,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-12 02:12:03,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 512 transitions. [2023-11-12 02:12:03,673 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5019607843137255 [2023-11-12 02:12:03,673 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 512 transitions. [2023-11-12 02:12:03,673 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 512 transitions. [2023-11-12 02:12:03,674 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:12:03,674 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 512 transitions. [2023-11-12 02:12:03,676 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 128.0) internal successors, (512), 4 states have internal predecessors, (512), 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) [2023-11-12 02:12:03,679 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 255.0) internal successors, (1275), 5 states have internal predecessors, (1275), 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) [2023-11-12 02:12:03,680 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 255.0) internal successors, (1275), 5 states have internal predecessors, (1275), 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) [2023-11-12 02:12:03,680 INFO L175 Difference]: Start difference. First operand has 46 places, 38 transitions, 123 flow. Second operand 4 states and 512 transitions. [2023-11-12 02:12:03,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 51 transitions, 243 flow [2023-11-12 02:12:03,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 51 transitions, 238 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:12:03,684 INFO L231 Difference]: Finished difference. Result has 44 places, 34 transitions, 112 flow [2023-11-12 02:12:03,684 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=112, PETRI_PLACES=44, PETRI_TRANSITIONS=34} [2023-11-12 02:12:03,685 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, -3 predicate places. [2023-11-12 02:12:03,685 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 34 transitions, 112 flow [2023-11-12 02:12:03,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 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) [2023-11-12 02:12:03,686 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:12:03,686 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:12:03,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:12:03,687 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-12 02:12:03,687 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:03,687 INFO L85 PathProgramCache]: Analyzing trace with hash 445229918, now seen corresponding path program 1 times [2023-11-12 02:12:03,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:03,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279443101] [2023-11-12 02:12:03,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:03,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:03,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:03,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:12:03,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:03,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279443101] [2023-11-12 02:12:03,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279443101] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:03,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:12:03,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:12:03,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198420860] [2023-11-12 02:12:03,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:03,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:12:03,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:03,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:12:03,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:12:03,805 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 255 [2023-11-12 02:12:03,806 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 34 transitions, 112 flow. Second operand has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 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) [2023-11-12 02:12:03,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:12:03,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 255 [2023-11-12 02:12:03,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:12:04,602 INFO L124 PetriNetUnfolderBase]: 2967/4225 cut-off events. [2023-11-12 02:12:04,602 INFO L125 PetriNetUnfolderBase]: For 1170/1170 co-relation queries the response was YES. [2023-11-12 02:12:04,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10338 conditions, 4225 events. 2967/4225 cut-off events. For 1170/1170 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 20119 event pairs, 638 based on Foata normal form. 0/3959 useless extension candidates. Maximal degree in co-relation 10326. Up to 1818 conditions per place. [2023-11-12 02:12:04,641 INFO L140 encePairwiseOnDemand]: 246/255 looper letters, 58 selfloop transitions, 9 changer transitions 0/70 dead transitions. [2023-11-12 02:12:04,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 70 transitions, 336 flow [2023-11-12 02:12:04,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:12:04,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-12 02:12:04,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 531 transitions. [2023-11-12 02:12:04,645 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5205882352941177 [2023-11-12 02:12:04,645 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 531 transitions. [2023-11-12 02:12:04,645 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 531 transitions. [2023-11-12 02:12:04,646 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:12:04,646 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 531 transitions. [2023-11-12 02:12:04,648 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 132.75) internal successors, (531), 4 states have internal predecessors, (531), 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) [2023-11-12 02:12:04,651 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 255.0) internal successors, (1275), 5 states have internal predecessors, (1275), 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) [2023-11-12 02:12:04,652 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 255.0) internal successors, (1275), 5 states have internal predecessors, (1275), 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) [2023-11-12 02:12:04,652 INFO L175 Difference]: Start difference. First operand has 44 places, 34 transitions, 112 flow. Second operand 4 states and 531 transitions. [2023-11-12 02:12:04,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 70 transitions, 336 flow [2023-11-12 02:12:04,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 70 transitions, 330 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:12:04,657 INFO L231 Difference]: Finished difference. Result has 46 places, 38 transitions, 164 flow [2023-11-12 02:12:04,657 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=164, PETRI_PLACES=46, PETRI_TRANSITIONS=38} [2023-11-12 02:12:04,658 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, -1 predicate places. [2023-11-12 02:12:04,659 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 38 transitions, 164 flow [2023-11-12 02:12:04,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 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) [2023-11-12 02:12:04,660 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:12:04,660 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:12:04,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 02:12:04,665 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting P2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-12 02:12:04,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:04,666 INFO L85 PathProgramCache]: Analyzing trace with hash -290569794, now seen corresponding path program 1 times [2023-11-12 02:12:04,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:04,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13033371] [2023-11-12 02:12:04,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:04,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:04,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:04,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:12:04,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:04,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13033371] [2023-11-12 02:12:04,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13033371] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:04,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:12:04,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:12:04,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030654075] [2023-11-12 02:12:04,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:04,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:12:04,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:04,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:12:04,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:12:04,893 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 255 [2023-11-12 02:12:04,894 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 38 transitions, 164 flow. Second operand has 5 states, 5 states have (on average 117.6) internal successors, (588), 5 states have internal predecessors, (588), 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) [2023-11-12 02:12:04,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:12:04,894 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 255 [2023-11-12 02:12:04,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:12:05,631 INFO L124 PetriNetUnfolderBase]: 2610/3667 cut-off events. [2023-11-12 02:12:05,631 INFO L125 PetriNetUnfolderBase]: For 2388/2388 co-relation queries the response was YES. [2023-11-12 02:12:05,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10503 conditions, 3667 events. 2610/3667 cut-off events. For 2388/2388 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 16740 event pairs, 583 based on Foata normal form. 0/3632 useless extension candidates. Maximal degree in co-relation 10490. Up to 1508 conditions per place. [2023-11-12 02:12:05,664 INFO L140 encePairwiseOnDemand]: 246/255 looper letters, 67 selfloop transitions, 13 changer transitions 4/87 dead transitions. [2023-11-12 02:12:05,665 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 87 transitions, 458 flow [2023-11-12 02:12:05,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:12:05,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-12 02:12:05,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 663 transitions. [2023-11-12 02:12:05,668 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.52 [2023-11-12 02:12:05,668 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 663 transitions. [2023-11-12 02:12:05,668 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 663 transitions. [2023-11-12 02:12:05,669 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:12:05,669 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 663 transitions. [2023-11-12 02:12:05,672 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 132.6) internal successors, (663), 5 states have internal predecessors, (663), 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) [2023-11-12 02:12:05,675 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 255.0) internal successors, (1530), 6 states have internal predecessors, (1530), 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) [2023-11-12 02:12:05,676 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 255.0) internal successors, (1530), 6 states have internal predecessors, (1530), 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) [2023-11-12 02:12:05,677 INFO L175 Difference]: Start difference. First operand has 46 places, 38 transitions, 164 flow. Second operand 5 states and 663 transitions. [2023-11-12 02:12:05,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 87 transitions, 458 flow [2023-11-12 02:12:05,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 87 transitions, 440 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-11-12 02:12:05,685 INFO L231 Difference]: Finished difference. Result has 49 places, 38 transitions, 188 flow [2023-11-12 02:12:05,685 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=188, PETRI_PLACES=49, PETRI_TRANSITIONS=38} [2023-11-12 02:12:05,686 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 2 predicate places. [2023-11-12 02:12:05,687 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 38 transitions, 188 flow [2023-11-12 02:12:05,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 117.6) internal successors, (588), 5 states have internal predecessors, (588), 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) [2023-11-12 02:12:05,687 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:12:05,688 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:12:05,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 02:12:05,688 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting P3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-12 02:12:05,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:05,689 INFO L85 PathProgramCache]: Analyzing trace with hash 328945406, now seen corresponding path program 1 times [2023-11-12 02:12:05,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:05,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108553129] [2023-11-12 02:12:05,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:05,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:05,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:05,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:12:05,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:05,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108553129] [2023-11-12 02:12:05,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108553129] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:05,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:12:05,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:12:05,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768708722] [2023-11-12 02:12:05,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:05,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:12:05,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:05,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:12:05,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:12:05,888 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 255 [2023-11-12 02:12:05,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 38 transitions, 188 flow. Second operand has 6 states, 6 states have (on average 118.16666666666667) internal successors, (709), 6 states have internal predecessors, (709), 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) [2023-11-12 02:12:05,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:12:05,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 255 [2023-11-12 02:12:05,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:12:06,784 INFO L124 PetriNetUnfolderBase]: 2575/3607 cut-off events. [2023-11-12 02:12:06,784 INFO L125 PetriNetUnfolderBase]: For 3031/3031 co-relation queries the response was YES. [2023-11-12 02:12:06,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10596 conditions, 3607 events. 2575/3607 cut-off events. For 3031/3031 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 16403 event pairs, 583 based on Foata normal form. 20/3612 useless extension candidates. Maximal degree in co-relation 10582. Up to 1508 conditions per place. [2023-11-12 02:12:06,805 INFO L140 encePairwiseOnDemand]: 246/255 looper letters, 0 selfloop transitions, 0 changer transitions 79/79 dead transitions. [2023-11-12 02:12:06,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 79 transitions, 410 flow [2023-11-12 02:12:06,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:12:06,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-12 02:12:06,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 770 transitions. [2023-11-12 02:12:06,809 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5032679738562091 [2023-11-12 02:12:06,810 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 770 transitions. [2023-11-12 02:12:06,810 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 770 transitions. [2023-11-12 02:12:06,811 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:12:06,811 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 770 transitions. [2023-11-12 02:12:06,814 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 128.33333333333334) internal successors, (770), 6 states have internal predecessors, (770), 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) [2023-11-12 02:12:06,818 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 255.0) internal successors, (1785), 7 states have internal predecessors, (1785), 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) [2023-11-12 02:12:06,819 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 255.0) internal successors, (1785), 7 states have internal predecessors, (1785), 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) [2023-11-12 02:12:06,820 INFO L175 Difference]: Start difference. First operand has 49 places, 38 transitions, 188 flow. Second operand 6 states and 770 transitions. [2023-11-12 02:12:06,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 79 transitions, 410 flow [2023-11-12 02:12:06,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 79 transitions, 355 flow, removed 8 selfloop flow, removed 6 redundant places. [2023-11-12 02:12:06,938 INFO L231 Difference]: Finished difference. Result has 44 places, 0 transitions, 0 flow [2023-11-12 02:12:06,939 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=44, PETRI_TRANSITIONS=0} [2023-11-12 02:12:06,940 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, -3 predicate places. [2023-11-12 02:12:06,940 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 0 transitions, 0 flow [2023-11-12 02:12:06,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 118.16666666666667) internal successors, (709), 6 states have internal predecessors, (709), 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) [2023-11-12 02:12:06,943 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 20 remaining) [2023-11-12 02:12:06,944 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 20 remaining) [2023-11-12 02:12:06,944 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 20 remaining) [2023-11-12 02:12:06,944 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 20 remaining) [2023-11-12 02:12:06,945 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 20 remaining) [2023-11-12 02:12:06,945 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 20 remaining) [2023-11-12 02:12:06,945 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 20 remaining) [2023-11-12 02:12:06,945 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 20 remaining) [2023-11-12 02:12:06,946 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (11 of 20 remaining) [2023-11-12 02:12:06,946 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 20 remaining) [2023-11-12 02:12:06,946 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 20 remaining) [2023-11-12 02:12:06,947 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 20 remaining) [2023-11-12 02:12:06,947 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 20 remaining) [2023-11-12 02:12:06,947 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 20 remaining) [2023-11-12 02:12:06,947 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 20 remaining) [2023-11-12 02:12:06,948 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 20 remaining) [2023-11-12 02:12:06,948 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 20 remaining) [2023-11-12 02:12:06,948 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 20 remaining) [2023-11-12 02:12:06,948 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 20 remaining) [2023-11-12 02:12:06,949 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 20 remaining) [2023-11-12 02:12:06,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 02:12:06,949 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-11-12 02:12:06,955 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-12 02:12:06,956 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-11-12 02:12:06,959 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 02:12:06 BasicIcfg [2023-11-12 02:12:06,960 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-12 02:12:06,960 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-12 02:12:06,961 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-12 02:12:06,961 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-12 02:12:06,961 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:11:53" (3/4) ... [2023-11-12 02:12:06,963 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-12 02:12:06,966 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-11-12 02:12:06,967 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-11-12 02:12:06,967 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2023-11-12 02:12:06,967 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2023-11-12 02:12:06,975 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2023-11-12 02:12:06,975 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2023-11-12 02:12:06,975 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-12 02:12:06,976 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-12 02:12:07,084 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11214383-ca6b-47cd-9249-71e436533528/bin/uautomizer-verify-uTZkv6EMXl/witness.graphml [2023-11-12 02:12:07,086 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11214383-ca6b-47cd-9249-71e436533528/bin/uautomizer-verify-uTZkv6EMXl/witness.yml [2023-11-12 02:12:07,086 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-12 02:12:07,087 INFO L158 Benchmark]: Toolchain (without parser) took 14870.52ms. Allocated memory was 117.4MB in the beginning and 906.0MB in the end (delta: 788.5MB). Free memory was 78.8MB in the beginning and 514.5MB in the end (delta: -435.6MB). Peak memory consumption was 354.1MB. Max. memory is 16.1GB. [2023-11-12 02:12:07,087 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 117.4MB. Free memory is still 90.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 02:12:07,087 INFO L158 Benchmark]: CACSL2BoogieTranslator took 607.78ms. Allocated memory is still 117.4MB. Free memory was 78.5MB in the beginning and 54.3MB in the end (delta: 24.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2023-11-12 02:12:07,088 INFO L158 Benchmark]: Boogie Procedure Inliner took 79.56ms. Allocated memory is still 117.4MB. Free memory was 54.3MB in the beginning and 51.6MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 02:12:07,088 INFO L158 Benchmark]: Boogie Preprocessor took 45.36ms. Allocated memory is still 117.4MB. Free memory was 51.6MB in the beginning and 49.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 02:12:07,089 INFO L158 Benchmark]: RCFGBuilder took 1020.60ms. Allocated memory was 117.4MB in the beginning and 161.5MB in the end (delta: 44.0MB). Free memory was 49.1MB in the beginning and 95.2MB in the end (delta: -46.1MB). Peak memory consumption was 18.8MB. Max. memory is 16.1GB. [2023-11-12 02:12:07,089 INFO L158 Benchmark]: TraceAbstraction took 12984.02ms. Allocated memory was 161.5MB in the beginning and 906.0MB in the end (delta: 744.5MB). Free memory was 93.9MB in the beginning and 519.7MB in the end (delta: -425.8MB). Peak memory consumption was 322.7MB. Max. memory is 16.1GB. [2023-11-12 02:12:07,089 INFO L158 Benchmark]: Witness Printer took 125.59ms. Allocated memory is still 906.0MB. Free memory was 519.7MB in the beginning and 514.5MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-12 02:12:07,093 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 117.4MB. Free memory is still 90.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 607.78ms. Allocated memory is still 117.4MB. Free memory was 78.5MB in the beginning and 54.3MB in the end (delta: 24.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 79.56ms. Allocated memory is still 117.4MB. Free memory was 54.3MB in the beginning and 51.6MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 45.36ms. Allocated memory is still 117.4MB. Free memory was 51.6MB in the beginning and 49.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1020.60ms. Allocated memory was 117.4MB in the beginning and 161.5MB in the end (delta: 44.0MB). Free memory was 49.1MB in the beginning and 95.2MB in the end (delta: -46.1MB). Peak memory consumption was 18.8MB. Max. memory is 16.1GB. * TraceAbstraction took 12984.02ms. Allocated memory was 161.5MB in the beginning and 906.0MB in the end (delta: 744.5MB). Free memory was 93.9MB in the beginning and 519.7MB in the end (delta: -425.8MB). Peak memory consumption was 322.7MB. Max. memory is 16.1GB. * Witness Printer took 125.59ms. Allocated memory is still 906.0MB. Free memory was 519.7MB in the beginning and 514.5MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.1s, 147 PlacesBefore, 47 PlacesAfterwards, 137 TransitionsBefore, 35 TransitionsAfterwards, 4188 CoEnabledTransitionPairs, 6 FixpointIterations, 41 TrivialSequentialCompositions, 56 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 15 ConcurrentYvCompositions, 2 ChoiceCompositions, 114 TotalNumberOfCompositions, 12410 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4771, independent: 4494, independent conditional: 0, independent unconditional: 4494, dependent: 277, dependent conditional: 0, dependent unconditional: 277, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2225, independent: 2163, independent conditional: 0, independent unconditional: 2163, dependent: 62, dependent conditional: 0, dependent unconditional: 62, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 4771, independent: 2331, independent conditional: 0, independent unconditional: 2331, dependent: 215, dependent conditional: 0, dependent unconditional: 215, unknown: 2225, unknown conditional: 0, unknown unconditional: 2225] , Statistics on independence cache: Total cache size (in pairs): 204, Positive cache size: 182, Positive conditional cache size: 0, Positive unconditional cache size: 182, Negative cache size: 22, Negative conditional cache size: 0, Negative unconditional cache size: 22, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 758]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 758]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 773]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 773]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 801]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 801]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 847]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 847]: 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, 181 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: 12.8s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 6.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 277 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 242 mSDsluCounter, 12 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 70 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 434 IncrementalHoareTripleChecker+Invalid, 504 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 70 mSolverCounterUnsat, 12 mSDtfsCounter, 434 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=188occurred in iteration=4, InterpolantAutomatonStates: 22, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 62 NumberOfCodeBlocks, 62 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 57 ConstructedInterpolants, 0 QuantifiedInterpolants, 171 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! [2023-11-12 02:12:07,128 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11214383-ca6b-47cd-9249-71e436533528/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (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