./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/unroll-4.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 30e01a73 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_527864e6-eee5-4e4c-8a3c-e2d27bcb005c/bin/uautomizer-verify-zZY32mL2XJ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_527864e6-eee5-4e4c-8a3c-e2d27bcb005c/bin/uautomizer-verify-zZY32mL2XJ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_527864e6-eee5-4e4c-8a3c-e2d27bcb005c/bin/uautomizer-verify-zZY32mL2XJ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_527864e6-eee5-4e4c-8a3c-e2d27bcb005c/bin/uautomizer-verify-zZY32mL2XJ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/unroll-4.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_527864e6-eee5-4e4c-8a3c-e2d27bcb005c/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_527864e6-eee5-4e4c-8a3c-e2d27bcb005c/bin/uautomizer-verify-zZY32mL2XJ --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 bb07434636f33664cc09ed992a41516efeea5f96121c916fb8904844e76d9fcd --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 22:28:46,535 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 22:28:46,666 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_527864e6-eee5-4e4c-8a3c-e2d27bcb005c/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-23 22:28:46,674 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 22:28:46,675 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 22:28:46,718 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 22:28:46,719 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 22:28:46,720 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 22:28:46,721 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 22:28:46,729 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 22:28:46,729 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 22:28:46,731 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 22:28:46,732 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 22:28:46,734 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 22:28:46,734 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 22:28:46,735 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 22:28:46,735 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 22:28:46,736 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 22:28:46,736 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 22:28:46,737 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 22:28:46,739 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 22:28:46,740 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 22:28:46,740 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 22:28:46,741 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 22:28:46,741 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-23 22:28:46,742 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 22:28:46,742 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 22:28:46,742 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 22:28:46,743 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 22:28:46,744 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 22:28:46,745 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 22:28:46,746 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 22:28:46,746 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 22:28:46,746 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 22:28:46,746 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 22:28:46,747 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 22:28:46,747 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 22:28:46,747 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 22:28:46,748 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 22:28:46,748 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 22:28:46,748 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 22:28:46,749 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 22:28:46,749 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 22:28:46,749 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 22:28:46,750 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_527864e6-eee5-4e4c-8a3c-e2d27bcb005c/bin/uautomizer-verify-zZY32mL2XJ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_527864e6-eee5-4e4c-8a3c-e2d27bcb005c/bin/uautomizer-verify-zZY32mL2XJ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bb07434636f33664cc09ed992a41516efeea5f96121c916fb8904844e76d9fcd [2023-11-23 22:28:47,129 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 22:28:47,166 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 22:28:47,170 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 22:28:47,171 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 22:28:47,172 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 22:28:47,173 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_527864e6-eee5-4e4c-8a3c-e2d27bcb005c/bin/uautomizer-verify-zZY32mL2XJ/../../sv-benchmarks/c/weaver/unroll-4.wvr.c [2023-11-23 22:28:50,353 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 22:28:50,639 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 22:28:50,639 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_527864e6-eee5-4e4c-8a3c-e2d27bcb005c/sv-benchmarks/c/weaver/unroll-4.wvr.c [2023-11-23 22:28:50,648 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_527864e6-eee5-4e4c-8a3c-e2d27bcb005c/bin/uautomizer-verify-zZY32mL2XJ/data/75b8b9761/0470bc417f564625871d268a99ff83ed/FLAG2387fb3d1 [2023-11-23 22:28:50,662 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_527864e6-eee5-4e4c-8a3c-e2d27bcb005c/bin/uautomizer-verify-zZY32mL2XJ/data/75b8b9761/0470bc417f564625871d268a99ff83ed [2023-11-23 22:28:50,664 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 22:28:50,666 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 22:28:50,667 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 22:28:50,668 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 22:28:50,673 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 22:28:50,674 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:28:50" (1/1) ... [2023-11-23 22:28:50,675 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65e4c0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:28:50, skipping insertion in model container [2023-11-23 22:28:50,675 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:28:50" (1/1) ... [2023-11-23 22:28:50,700 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 22:28:50,906 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 22:28:50,919 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 22:28:50,951 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 22:28:50,969 INFO L206 MainTranslator]: Completed translation [2023-11-23 22:28:50,970 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:28:50 WrapperNode [2023-11-23 22:28:50,970 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 22:28:50,972 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 22:28:50,972 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 22:28:50,972 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 22:28:50,981 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:28:50" (1/1) ... [2023-11-23 22:28:50,991 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:28:50" (1/1) ... [2023-11-23 22:28:51,033 INFO L138 Inliner]: procedures = 24, calls = 37, calls flagged for inlining = 14, calls inlined = 14, statements flattened = 163 [2023-11-23 22:28:51,033 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 22:28:51,034 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 22:28:51,034 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 22:28:51,034 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 22:28:51,047 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:28:50" (1/1) ... [2023-11-23 22:28:51,047 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:28:50" (1/1) ... [2023-11-23 22:28:51,051 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:28:50" (1/1) ... [2023-11-23 22:28:51,067 INFO L189 HeapSplitter]: Split 12 memory accesses to 4 slices as follows [2, 2, 2, 6] [2023-11-23 22:28:51,067 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:28:50" (1/1) ... [2023-11-23 22:28:51,067 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:28:50" (1/1) ... [2023-11-23 22:28:51,077 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:28:50" (1/1) ... [2023-11-23 22:28:51,081 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:28:50" (1/1) ... [2023-11-23 22:28:51,084 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:28:50" (1/1) ... [2023-11-23 22:28:51,086 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:28:50" (1/1) ... [2023-11-23 22:28:51,090 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 22:28:51,091 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 22:28:51,091 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 22:28:51,091 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 22:28:51,092 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:28:50" (1/1) ... [2023-11-23 22:28:51,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 22:28:51,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_527864e6-eee5-4e4c-8a3c-e2d27bcb005c/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:28:51,135 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_527864e6-eee5-4e4c-8a3c-e2d27bcb005c/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 22:28:51,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_527864e6-eee5-4e4c-8a3c-e2d27bcb005c/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 22:28:51,182 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 22:28:51,183 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-23 22:28:51,183 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-23 22:28:51,183 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-23 22:28:51,183 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-23 22:28:51,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-23 22:28:51,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-23 22:28:51,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-23 22:28:51,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-23 22:28:51,187 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 22:28:51,187 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-23 22:28:51,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-23 22:28:51,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-23 22:28:51,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-23 22:28:51,188 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 22:28:51,188 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 22:28:51,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 22:28:51,189 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-23 22:28:51,189 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-23 22:28:51,190 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-23 22:28:51,191 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-23 22:28:51,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 22:28:51,193 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-23 22:28:51,393 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 22:28:51,396 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 22:28:51,889 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 22:28:52,337 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 22:28:52,338 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-23 22:28:52,339 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:28:52 BoogieIcfgContainer [2023-11-23 22:28:52,340 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 22:28:52,345 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 22:28:52,345 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 22:28:52,349 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 22:28:52,349 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 10:28:50" (1/3) ... [2023-11-23 22:28:52,350 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bfc1945 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:28:52, skipping insertion in model container [2023-11-23 22:28:52,350 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:28:50" (2/3) ... [2023-11-23 22:28:52,352 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bfc1945 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:28:52, skipping insertion in model container [2023-11-23 22:28:52,353 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:28:52" (3/3) ... [2023-11-23 22:28:52,354 INFO L112 eAbstractionObserver]: Analyzing ICFG unroll-4.wvr.c [2023-11-23 22:28:52,367 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-23 22:28:52,379 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 22:28:52,379 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-23 22:28:52,380 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-23 22:28:52,430 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-23 22:28:52,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 27 places, 23 transitions, 60 flow [2023-11-23 22:28:52,527 INFO L124 PetriNetUnfolderBase]: 3/21 cut-off events. [2023-11-23 22:28:52,527 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-23 22:28:52,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30 conditions, 21 events. 3/21 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 23 event pairs, 0 based on Foata normal form. 0/16 useless extension candidates. Maximal degree in co-relation 14. Up to 2 conditions per place. [2023-11-23 22:28:52,532 INFO L82 GeneralOperation]: Start removeDead. Operand has 27 places, 23 transitions, 60 flow [2023-11-23 22:28:52,535 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 6 places, 6 transitions, 12 flow [2023-11-23 22:28:52,546 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 22:28:52,555 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;@47b76b1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 22:28:52,555 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-23 22:28:52,559 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-23 22:28:52,559 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-23 22:28:52,560 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-23 22:28:52,560 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:28:52,561 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-23 22:28:52,561 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-23 22:28:52,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:28:52,567 INFO L85 PathProgramCache]: Analyzing trace with hash 501067, now seen corresponding path program 1 times [2023-11-23 22:28:52,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:28:52,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534121515] [2023-11-23 22:28:52,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:28:52,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:28:52,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:28:52,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:28:52,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:28:52,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534121515] [2023-11-23 22:28:52,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534121515] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:28:52,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:28:52,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 22:28:52,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147368138] [2023-11-23 22:28:52,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:28:52,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 22:28:52,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:28:52,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 22:28:52,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 22:28:52,944 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 23 [2023-11-23 22:28:52,946 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 6 places, 6 transitions, 12 flow. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:28:52,947 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:28:52,947 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 23 [2023-11-23 22:28:52,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:28:52,985 INFO L124 PetriNetUnfolderBase]: 1/9 cut-off events. [2023-11-23 22:28:52,985 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-23 22:28:52,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18 conditions, 9 events. 1/9 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 3 event pairs, 0 based on Foata normal form. 1/9 useless extension candidates. Maximal degree in co-relation 0. Up to 6 conditions per place. [2023-11-23 22:28:52,987 INFO L140 encePairwiseOnDemand]: 18/23 looper letters, 4 selfloop transitions, 3 changer transitions 0/8 dead transitions. [2023-11-23 22:28:52,987 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 9 places, 8 transitions, 30 flow [2023-11-23 22:28:52,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 22:28:52,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-23 22:28:52,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 21 transitions. [2023-11-23 22:28:53,000 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.22826086956521738 [2023-11-23 22:28:53,001 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 21 transitions. [2023-11-23 22:28:53,002 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 21 transitions. [2023-11-23 22:28:53,002 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:28:53,005 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 21 transitions. [2023-11-23 22:28:53,007 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:28:53,020 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 23.0) internal successors, (115), 5 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:28:53,021 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 23.0) internal successors, (115), 5 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:28:53,023 INFO L175 Difference]: Start difference. First operand has 6 places, 6 transitions, 12 flow. Second operand 4 states and 21 transitions. [2023-11-23 22:28:53,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 9 places, 8 transitions, 30 flow [2023-11-23 22:28:53,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 9 places, 8 transitions, 30 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-23 22:28:53,027 INFO L231 Difference]: Finished difference. Result has 11 places, 8 transitions, 34 flow [2023-11-23 22:28:53,029 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=12, PETRI_DIFFERENCE_MINUEND_PLACES=6, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=6, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=3, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=34, PETRI_PLACES=11, PETRI_TRANSITIONS=8} [2023-11-23 22:28:53,033 INFO L281 CegarLoopForPetriNet]: 6 programPoint places, 5 predicate places. [2023-11-23 22:28:53,033 INFO L495 AbstractCegarLoop]: Abstraction has has 11 places, 8 transitions, 34 flow [2023-11-23 22:28:53,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:28:53,034 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:28:53,034 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-23 22:28:53,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 22:28:53,035 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-23 22:28:53,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:28:53,036 INFO L85 PathProgramCache]: Analyzing trace with hash 2042879449, now seen corresponding path program 1 times [2023-11-23 22:28:53,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:28:53,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731172777] [2023-11-23 22:28:53,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:28:53,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:28:53,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:28:53,200 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:28:53,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:28:53,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731172777] [2023-11-23 22:28:53,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731172777] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 22:28:53,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1036061983] [2023-11-23 22:28:53,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:28:53,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:28:53,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_527864e6-eee5-4e4c-8a3c-e2d27bcb005c/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:28:53,204 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_527864e6-eee5-4e4c-8a3c-e2d27bcb005c/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:28:53,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_527864e6-eee5-4e4c-8a3c-e2d27bcb005c/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 22:28:53,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:28:53,364 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 22:28:53,368 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:28:53,484 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:28:53,485 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 22:28:53,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1036061983] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:28:53,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 22:28:53,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-11-23 22:28:53,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251848126] [2023-11-23 22:28:53,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:28:53,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 22:28:53,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:28:53,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 22:28:53,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-23 22:28:53,511 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 23 [2023-11-23 22:28:53,512 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 11 places, 8 transitions, 34 flow. Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:28:53,512 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:28:53,512 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 23 [2023-11-23 22:28:53,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:28:53,570 INFO L124 PetriNetUnfolderBase]: 1/8 cut-off events. [2023-11-23 22:28:53,573 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-23 22:28:53,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27 conditions, 8 events. 1/8 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 1 event pairs, 0 based on Foata normal form. 1/8 useless extension candidates. Maximal degree in co-relation 10. Up to 4 conditions per place. [2023-11-23 22:28:53,574 INFO L140 encePairwiseOnDemand]: 19/23 looper letters, 1 selfloop transitions, 5 changer transitions 0/7 dead transitions. [2023-11-23 22:28:53,574 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 15 places, 7 transitions, 42 flow [2023-11-23 22:28:53,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 22:28:53,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-23 22:28:53,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 25 transitions. [2023-11-23 22:28:53,581 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.18115942028985507 [2023-11-23 22:28:53,581 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 25 transitions. [2023-11-23 22:28:53,586 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 25 transitions. [2023-11-23 22:28:53,586 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:28:53,587 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 25 transitions. [2023-11-23 22:28:53,588 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:28:53,589 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:28:53,591 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:28:53,591 INFO L175 Difference]: Start difference. First operand has 11 places, 8 transitions, 34 flow. Second operand 6 states and 25 transitions. [2023-11-23 22:28:53,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 15 places, 7 transitions, 42 flow [2023-11-23 22:28:53,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 14 places, 7 transitions, 40 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-23 22:28:53,594 INFO L231 Difference]: Finished difference. Result has 14 places, 7 transitions, 38 flow [2023-11-23 22:28:53,594 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=9, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=7, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=38, PETRI_PLACES=14, PETRI_TRANSITIONS=7} [2023-11-23 22:28:53,595 INFO L281 CegarLoopForPetriNet]: 6 programPoint places, 8 predicate places. [2023-11-23 22:28:53,596 INFO L495 AbstractCegarLoop]: Abstraction has has 14 places, 7 transitions, 38 flow [2023-11-23 22:28:53,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:28:53,597 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:28:53,597 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2023-11-23 22:28:53,626 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_527864e6-eee5-4e4c-8a3c-e2d27bcb005c/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 22:28:53,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_527864e6-eee5-4e4c-8a3c-e2d27bcb005c/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:28:53,808 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-23 22:28:53,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:28:53,809 INFO L85 PathProgramCache]: Analyzing trace with hash -1095246023, now seen corresponding path program 1 times [2023-11-23 22:28:53,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:28:53,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826171864] [2023-11-23 22:28:53,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:28:53,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:28:53,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:28:53,997 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:28:53,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:28:53,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826171864] [2023-11-23 22:28:53,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826171864] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 22:28:53,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1038230951] [2023-11-23 22:28:53,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:28:53,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:28:54,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_527864e6-eee5-4e4c-8a3c-e2d27bcb005c/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:28:54,001 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_527864e6-eee5-4e4c-8a3c-e2d27bcb005c/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:28:54,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_527864e6-eee5-4e4c-8a3c-e2d27bcb005c/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 22:28:54,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:28:54,114 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 22:28:54,116 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:28:54,155 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:28:54,155 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 22:28:54,213 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:28:54,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1038230951] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 22:28:54,214 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 22:28:54,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2023-11-23 22:28:54,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277031485] [2023-11-23 22:28:54,215 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 22:28:54,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-23 22:28:54,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:28:54,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-23 22:28:54,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-11-23 22:28:54,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 23 [2023-11-23 22:28:54,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 14 places, 7 transitions, 38 flow. Second operand has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 12 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) [2023-11-23 22:28:54,250 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:28:54,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 23 [2023-11-23 22:28:54,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:28:54,348 INFO L124 PetriNetUnfolderBase]: 1/17 cut-off events. [2023-11-23 22:28:54,348 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-11-23 22:28:54,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58 conditions, 17 events. 1/17 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 1 event pairs, 0 based on Foata normal form. 3/20 useless extension candidates. Maximal degree in co-relation 8. Up to 7 conditions per place. [2023-11-23 22:28:54,349 INFO L140 encePairwiseOnDemand]: 19/23 looper letters, 3 selfloop transitions, 9 changer transitions 0/13 dead transitions. [2023-11-23 22:28:54,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 13 transitions, 98 flow [2023-11-23 22:28:54,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-23 22:28:54,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-23 22:28:54,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 45 transitions. [2023-11-23 22:28:54,354 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.1956521739130435 [2023-11-23 22:28:54,354 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 45 transitions. [2023-11-23 22:28:54,354 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 45 transitions. [2023-11-23 22:28:54,355 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:28:54,355 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 45 transitions. [2023-11-23 22:28:54,357 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 4.5) internal successors, (45), 10 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:28:54,358 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 23.0) internal successors, (253), 11 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:28:54,359 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 23.0) internal successors, (253), 11 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:28:54,359 INFO L175 Difference]: Start difference. First operand has 14 places, 7 transitions, 38 flow. Second operand 10 states and 45 transitions. [2023-11-23 22:28:54,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 13 transitions, 98 flow [2023-11-23 22:28:54,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 13 transitions, 72 flow, removed 4 selfloop flow, removed 5 redundant places. [2023-11-23 22:28:54,362 INFO L231 Difference]: Finished difference. Result has 21 places, 13 transitions, 82 flow [2023-11-23 22:28:54,363 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=24, PETRI_DIFFERENCE_MINUEND_PLACES=9, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=7, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=82, PETRI_PLACES=21, PETRI_TRANSITIONS=13} [2023-11-23 22:28:54,364 INFO L281 CegarLoopForPetriNet]: 6 programPoint places, 15 predicate places. [2023-11-23 22:28:54,365 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 13 transitions, 82 flow [2023-11-23 22:28:54,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 12 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) [2023-11-23 22:28:54,365 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:28:54,366 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2023-11-23 22:28:54,398 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_527864e6-eee5-4e4c-8a3c-e2d27bcb005c/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-23 22:28:54,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_527864e6-eee5-4e4c-8a3c-e2d27bcb005c/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:28:54,583 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-23 22:28:54,583 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:28:54,583 INFO L85 PathProgramCache]: Analyzing trace with hash 1872112519, now seen corresponding path program 2 times [2023-11-23 22:28:54,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:28:54,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073651679] [2023-11-23 22:28:54,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:28:54,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:28:54,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:28:54,903 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:28:54,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:28:54,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073651679] [2023-11-23 22:28:54,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073651679] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 22:28:54,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1456483485] [2023-11-23 22:28:54,904 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 22:28:54,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:28:54,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_527864e6-eee5-4e4c-8a3c-e2d27bcb005c/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:28:54,906 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_527864e6-eee5-4e4c-8a3c-e2d27bcb005c/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:28:54,909 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_527864e6-eee5-4e4c-8a3c-e2d27bcb005c/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-23 22:28:55,003 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-23 22:28:55,004 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 22:28:55,005 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 22:28:55,006 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:28:55,070 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-23 22:28:55,070 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 22:28:55,118 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-23 22:28:55,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1456483485] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 22:28:55,119 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 22:28:55,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2023-11-23 22:28:55,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003123357] [2023-11-23 22:28:55,120 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 22:28:55,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-23 22:28:55,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:28:55,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-23 22:28:55,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2023-11-23 22:28:55,153 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 23 [2023-11-23 22:28:55,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 13 transitions, 82 flow. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:28:55,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:28:55,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 23 [2023-11-23 22:28:55,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:28:55,326 INFO L124 PetriNetUnfolderBase]: 1/19 cut-off events. [2023-11-23 22:28:55,326 INFO L125 PetriNetUnfolderBase]: For 53/53 co-relation queries the response was YES. [2023-11-23 22:28:55,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67 conditions, 19 events. 1/19 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 1 event pairs, 0 based on Foata normal form. 2/21 useless extension candidates. Maximal degree in co-relation 38. Up to 7 conditions per place. [2023-11-23 22:28:55,327 INFO L140 encePairwiseOnDemand]: 19/23 looper letters, 0 selfloop transitions, 0 changer transitions 14/14 dead transitions. [2023-11-23 22:28:55,327 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 14 transitions, 110 flow [2023-11-23 22:28:55,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-23 22:28:55,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-23 22:28:55,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 57 transitions. [2023-11-23 22:28:55,332 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.17701863354037267 [2023-11-23 22:28:55,332 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 57 transitions. [2023-11-23 22:28:55,332 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 57 transitions. [2023-11-23 22:28:55,334 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:28:55,334 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 57 transitions. [2023-11-23 22:28:55,336 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 4.071428571428571) internal successors, (57), 14 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:28:55,338 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 23.0) internal successors, (345), 15 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:28:55,339 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 23.0) internal successors, (345), 15 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:28:55,339 INFO L175 Difference]: Start difference. First operand has 21 places, 13 transitions, 82 flow. Second operand 14 states and 57 transitions. [2023-11-23 22:28:55,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 14 transitions, 110 flow [2023-11-23 22:28:55,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 14 transitions, 88 flow, removed 5 selfloop flow, removed 6 redundant places. [2023-11-23 22:28:55,343 INFO L231 Difference]: Finished difference. Result has 27 places, 0 transitions, 0 flow [2023-11-23 22:28:55,343 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=14, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=0, PETRI_PLACES=27, PETRI_TRANSITIONS=0} [2023-11-23 22:28:55,345 INFO L281 CegarLoopForPetriNet]: 6 programPoint places, 21 predicate places. [2023-11-23 22:28:55,345 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 0 transitions, 0 flow [2023-11-23 22:28:55,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:28:55,348 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 4 remaining) [2023-11-23 22:28:55,349 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 4 remaining) [2023-11-23 22:28:55,349 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-11-23 22:28:55,349 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-11-23 22:28:55,373 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_527864e6-eee5-4e4c-8a3c-e2d27bcb005c/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-23 22:28:55,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_527864e6-eee5-4e4c-8a3c-e2d27bcb005c/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:28:55,564 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2023-11-23 22:28:55,569 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-23 22:28:55,569 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-23 22:28:55,575 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 10:28:55 BasicIcfg [2023-11-23 22:28:55,575 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-23 22:28:55,576 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 22:28:55,576 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 22:28:55,576 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 22:28:55,577 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:28:52" (3/4) ... [2023-11-23 22:28:55,579 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-23 22:28:55,583 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-11-23 22:28:55,584 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-11-23 22:28:55,600 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 95 nodes and edges [2023-11-23 22:28:55,601 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 24 nodes and edges [2023-11-23 22:28:55,602 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2023-11-23 22:28:55,602 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-11-23 22:28:55,718 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_527864e6-eee5-4e4c-8a3c-e2d27bcb005c/bin/uautomizer-verify-zZY32mL2XJ/witness.graphml [2023-11-23 22:28:55,719 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_527864e6-eee5-4e4c-8a3c-e2d27bcb005c/bin/uautomizer-verify-zZY32mL2XJ/witness.yml [2023-11-23 22:28:55,719 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 22:28:55,720 INFO L158 Benchmark]: Toolchain (without parser) took 5053.86ms. Allocated memory was 134.2MB in the beginning and 182.5MB in the end (delta: 48.2MB). Free memory was 101.5MB in the beginning and 147.5MB in the end (delta: -46.0MB). Peak memory consumption was 92.6MB. Max. memory is 16.1GB. [2023-11-23 22:28:55,720 INFO L158 Benchmark]: CDTParser took 1.56ms. Allocated memory is still 134.2MB. Free memory was 106.7MB in the beginning and 106.5MB in the end (delta: 159.4kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 22:28:55,721 INFO L158 Benchmark]: CACSL2BoogieTranslator took 303.47ms. Allocated memory is still 134.2MB. Free memory was 101.5MB in the beginning and 89.8MB in the end (delta: 11.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-23 22:28:55,722 INFO L158 Benchmark]: Boogie Procedure Inliner took 61.71ms. Allocated memory is still 134.2MB. Free memory was 89.8MB in the beginning and 87.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 22:28:55,722 INFO L158 Benchmark]: Boogie Preprocessor took 56.18ms. Allocated memory is still 134.2MB. Free memory was 87.7MB in the beginning and 85.2MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 22:28:55,723 INFO L158 Benchmark]: RCFGBuilder took 1249.63ms. Allocated memory was 134.2MB in the beginning and 182.5MB in the end (delta: 48.2MB). Free memory was 85.2MB in the beginning and 134.4MB in the end (delta: -49.2MB). Peak memory consumption was 40.8MB. Max. memory is 16.1GB. [2023-11-23 22:28:55,723 INFO L158 Benchmark]: TraceAbstraction took 3230.61ms. Allocated memory is still 182.5MB. Free memory was 134.4MB in the beginning and 60.3MB in the end (delta: 74.2MB). Peak memory consumption was 70.9MB. Max. memory is 16.1GB. [2023-11-23 22:28:55,724 INFO L158 Benchmark]: Witness Printer took 143.23ms. Allocated memory is still 182.5MB. Free memory was 60.3MB in the beginning and 147.5MB in the end (delta: -87.3MB). Peak memory consumption was 3.9MB. Max. memory is 16.1GB. [2023-11-23 22:28:55,727 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.56ms. Allocated memory is still 134.2MB. Free memory was 106.7MB in the beginning and 106.5MB in the end (delta: 159.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 303.47ms. Allocated memory is still 134.2MB. Free memory was 101.5MB in the beginning and 89.8MB in the end (delta: 11.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 61.71ms. Allocated memory is still 134.2MB. Free memory was 89.8MB in the beginning and 87.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 56.18ms. Allocated memory is still 134.2MB. Free memory was 87.7MB in the beginning and 85.2MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1249.63ms. Allocated memory was 134.2MB in the beginning and 182.5MB in the end (delta: 48.2MB). Free memory was 85.2MB in the beginning and 134.4MB in the end (delta: -49.2MB). Peak memory consumption was 40.8MB. Max. memory is 16.1GB. * TraceAbstraction took 3230.61ms. Allocated memory is still 182.5MB. Free memory was 134.4MB in the beginning and 60.3MB in the end (delta: 74.2MB). Peak memory consumption was 70.9MB. Max. memory is 16.1GB. * Witness Printer took 143.23ms. Allocated memory is still 182.5MB. Free memory was 60.3MB in the beginning and 147.5MB in the end (delta: -87.3MB). Peak memory consumption was 3.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 104]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 104]: 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 5 procedures, 29 locations, 4 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: 3.1s, OverallIterations: 4, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 53 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 41 mSDsluCounter, 25 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 23 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 132 IncrementalHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 2 mSDtfsCounter, 132 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 85 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=82occurred in iteration=3, InterpolantAutomatonStates: 34, 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: 0.1s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 61 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 75 ConstructedInterpolants, 0 QuantifiedInterpolants, 225 SizeOfPredicates, 9 NumberOfNonLiveVariables, 262 ConjunctsInSsa, 16 ConjunctsInUnsatCore, 9 InterpolantComputations, 2 PerfectInterpolantSequences, 46/103 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 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-23 22:28:55,766 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_527864e6-eee5-4e4c-8a3c-e2d27bcb005c/bin/uautomizer-verify-zZY32mL2XJ/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