./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursive-with-pointer/simple-recursive.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbcdebb4-c9bb-48bc-a08d-9527156ab1e2/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbcdebb4-c9bb-48bc-a08d-9527156ab1e2/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbcdebb4-c9bb-48bc-a08d-9527156ab1e2/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbcdebb4-c9bb-48bc-a08d-9527156ab1e2/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive-with-pointer/simple-recursive.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbcdebb4-c9bb-48bc-a08d-9527156ab1e2/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbcdebb4-c9bb-48bc-a08d-9527156ab1e2/bin/uautomizer-verify-VRDe98Ueme --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e4b2b33802a1e3212162c0e55c40efaad08f7abe5e8690f0efef5fec80921b38 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 10:49:02,807 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 10:49:02,891 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbcdebb4-c9bb-48bc-a08d-9527156ab1e2/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-26 10:49:02,897 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 10:49:02,898 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 10:49:02,924 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 10:49:02,925 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 10:49:02,926 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 10:49:02,927 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 10:49:02,928 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 10:49:02,928 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 10:49:02,929 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 10:49:02,930 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 10:49:02,931 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 10:49:02,931 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 10:49:02,932 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 10:49:02,933 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 10:49:02,933 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 10:49:02,934 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 10:49:02,934 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 10:49:02,935 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 10:49:02,936 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 10:49:02,936 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 10:49:02,937 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 10:49:02,938 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-26 10:49:02,938 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 10:49:02,939 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 10:49:02,940 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 10:49:02,940 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 10:49:02,941 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 10:49:02,941 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 10:49:02,942 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 10:49:02,942 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 10:49:02,943 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:49:02,944 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 10:49:02,944 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 10:49:02,945 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 10:49:02,945 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 10:49:02,946 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 10:49:02,946 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 10:49:02,946 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 10:49:02,947 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 10:49:02,947 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 10:49:02,948 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 10:49:02,948 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_bbcdebb4-c9bb-48bc-a08d-9527156ab1e2/bin/uautomizer-verify-VRDe98Ueme/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbcdebb4-c9bb-48bc-a08d-9527156ab1e2/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e4b2b33802a1e3212162c0e55c40efaad08f7abe5e8690f0efef5fec80921b38 [2023-11-26 10:49:03,255 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 10:49:03,284 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 10:49:03,288 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 10:49:03,290 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 10:49:03,291 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 10:49:03,293 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbcdebb4-c9bb-48bc-a08d-9527156ab1e2/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/recursive-with-pointer/simple-recursive.c [2023-11-26 10:49:06,496 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 10:49:06,711 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 10:49:06,712 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbcdebb4-c9bb-48bc-a08d-9527156ab1e2/sv-benchmarks/c/recursive-with-pointer/simple-recursive.c [2023-11-26 10:49:06,719 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbcdebb4-c9bb-48bc-a08d-9527156ab1e2/bin/uautomizer-verify-VRDe98Ueme/data/dd64d9de7/246bd45390ee427685c1f1b2f6a414a9/FLAG30659c55b [2023-11-26 10:49:06,734 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbcdebb4-c9bb-48bc-a08d-9527156ab1e2/bin/uautomizer-verify-VRDe98Ueme/data/dd64d9de7/246bd45390ee427685c1f1b2f6a414a9 [2023-11-26 10:49:06,737 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 10:49:06,739 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 10:49:06,741 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 10:49:06,741 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 10:49:06,747 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 10:49:06,748 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:49:06" (1/1) ... [2023-11-26 10:49:06,749 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40d03e7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:49:06, skipping insertion in model container [2023-11-26 10:49:06,749 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:49:06" (1/1) ... [2023-11-26 10:49:06,770 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 10:49:06,954 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:49:06,965 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 10:49:06,979 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:49:06,994 INFO L206 MainTranslator]: Completed translation [2023-11-26 10:49:06,995 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:49:06 WrapperNode [2023-11-26 10:49:06,995 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 10:49:06,996 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 10:49:06,997 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 10:49:06,997 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 10:49:07,006 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:49:06" (1/1) ... [2023-11-26 10:49:07,013 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:49:06" (1/1) ... [2023-11-26 10:49:07,032 INFO L138 Inliner]: procedures = 14, calls = 19, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 32 [2023-11-26 10:49:07,033 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 10:49:07,034 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 10:49:07,034 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 10:49:07,034 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 10:49:07,044 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:49:06" (1/1) ... [2023-11-26 10:49:07,045 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:49:06" (1/1) ... [2023-11-26 10:49:07,047 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:49:06" (1/1) ... [2023-11-26 10:49:07,066 INFO L175 MemorySlicer]: Split 8 memory accesses to 2 slices as follows [2, 6]. 75 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1]. The 2 writes are split as follows [0, 2]. [2023-11-26 10:49:07,067 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:49:06" (1/1) ... [2023-11-26 10:49:07,067 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:49:06" (1/1) ... [2023-11-26 10:49:07,072 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:49:06" (1/1) ... [2023-11-26 10:49:07,073 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:49:06" (1/1) ... [2023-11-26 10:49:07,075 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:49:06" (1/1) ... [2023-11-26 10:49:07,076 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:49:06" (1/1) ... [2023-11-26 10:49:07,078 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 10:49:07,079 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 10:49:07,079 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 10:49:07,080 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 10:49:07,081 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:49:06" (1/1) ... [2023-11-26 10:49:07,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:49:07,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbcdebb4-c9bb-48bc-a08d-9527156ab1e2/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:49:07,114 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbcdebb4-c9bb-48bc-a08d-9527156ab1e2/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 10:49:07,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbcdebb4-c9bb-48bc-a08d-9527156ab1e2/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 10:49:07,165 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 10:49:07,165 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2023-11-26 10:49:07,166 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2023-11-26 10:49:07,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 10:49:07,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-26 10:49:07,167 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 10:49:07,167 INFO L130 BoogieDeclarations]: Found specification of procedure plus [2023-11-26 10:49:07,167 INFO L138 BoogieDeclarations]: Found implementation of procedure plus [2023-11-26 10:49:07,167 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-26 10:49:07,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-26 10:49:07,170 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 10:49:07,171 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 10:49:07,171 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-26 10:49:07,171 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-26 10:49:07,171 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 10:49:07,320 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 10:49:07,324 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 10:49:07,576 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 10:49:07,614 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 10:49:07,619 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-26 10:49:07,620 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:49:07 BoogieIcfgContainer [2023-11-26 10:49:07,620 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 10:49:07,624 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 10:49:07,625 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 10:49:07,629 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 10:49:07,630 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 10:49:06" (1/3) ... [2023-11-26 10:49:07,631 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c8d75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:49:07, skipping insertion in model container [2023-11-26 10:49:07,631 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:49:06" (2/3) ... [2023-11-26 10:49:07,633 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c8d75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:49:07, skipping insertion in model container [2023-11-26 10:49:07,634 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:49:07" (3/3) ... [2023-11-26 10:49:07,635 INFO L112 eAbstractionObserver]: Analyzing ICFG simple-recursive.c [2023-11-26 10:49:07,670 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 10:49:07,670 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-26 10:49:07,740 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 10:49:07,749 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;@54474499, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 10:49:07,749 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-26 10:49:07,754 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 10 states have (on average 1.4) internal successors, (14), 13 states have internal predecessors, (14), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-26 10:49:07,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-26 10:49:07,764 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:49:07,765 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:49:07,766 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting plusErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [plusErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, plusErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-11-26 10:49:07,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:49:07,776 INFO L85 PathProgramCache]: Analyzing trace with hash -438236029, now seen corresponding path program 1 times [2023-11-26 10:49:07,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:49:07,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413901560] [2023-11-26 10:49:07,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:49:07,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:49:07,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:49:08,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:49:08,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:49:08,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413901560] [2023-11-26 10:49:08,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413901560] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:49:08,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:49:08,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 10:49:08,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935742805] [2023-11-26 10:49:08,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:49:08,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 10:49:08,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:49:08,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 10:49:08,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-26 10:49:08,454 INFO L87 Difference]: Start difference. First operand has 18 states, 10 states have (on average 1.4) internal successors, (14), 13 states have internal predecessors, (14), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 7 states, 5 states have (on average 1.0) internal successors, (5), 4 states have internal predecessors, (5), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:49:08,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:49:08,660 INFO L93 Difference]: Finished difference Result 36 states and 42 transitions. [2023-11-26 10:49:08,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 10:49:08,663 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 1.0) internal successors, (5), 4 states have internal predecessors, (5), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-26 10:49:08,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:49:08,670 INFO L225 Difference]: With dead ends: 36 [2023-11-26 10:49:08,670 INFO L226 Difference]: Without dead ends: 17 [2023-11-26 10:49:08,674 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-26 10:49:08,678 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 11 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 10:49:08,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 54 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 10:49:08,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2023-11-26 10:49:08,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2023-11-26 10:49:08,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 12 states have internal predecessors, (13), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:49:08,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2023-11-26 10:49:08,718 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 7 [2023-11-26 10:49:08,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:49:08,718 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2023-11-26 10:49:08,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 1.0) internal successors, (5), 4 states have internal predecessors, (5), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:49:08,719 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2023-11-26 10:49:08,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-26 10:49:08,720 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:49:08,720 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-11-26 10:49:08,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 10:49:08,721 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting plusErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [plusErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, plusErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-11-26 10:49:08,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:49:08,722 INFO L85 PathProgramCache]: Analyzing trace with hash 1153014803, now seen corresponding path program 1 times [2023-11-26 10:49:08,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:49:08,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603437308] [2023-11-26 10:49:08,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:49:08,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:49:08,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:49:09,370 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:49:09,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:49:09,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603437308] [2023-11-26 10:49:09,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603437308] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:49:09,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [881968446] [2023-11-26 10:49:09,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:49:09,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:49:09,373 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbcdebb4-c9bb-48bc-a08d-9527156ab1e2/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:49:09,376 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbcdebb4-c9bb-48bc-a08d-9527156ab1e2/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:49:09,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbcdebb4-c9bb-48bc-a08d-9527156ab1e2/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 10:49:09,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:49:09,475 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 54 conjunts are in the unsatisfiable core [2023-11-26 10:49:09,484 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:49:09,549 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-26 10:49:09,796 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 3 [2023-11-26 10:49:09,935 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-26 10:49:09,938 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:49:09,939 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:49:10,263 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:49:10,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [881968446] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-26 10:49:10,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-26 10:49:10,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10, 10] total 29 [2023-11-26 10:49:10,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265464222] [2023-11-26 10:49:10,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:49:10,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-26 10:49:10,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:49:10,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-26 10:49:10,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=824, Unknown=0, NotChecked=0, Total=930 [2023-11-26 10:49:10,269 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand has 12 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 7 states have internal predecessors, (10), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:49:10,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:49:10,530 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2023-11-26 10:49:10,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-26 10:49:10,531 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 7 states have internal predecessors, (10), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-11-26 10:49:10,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:49:10,534 INFO L225 Difference]: With dead ends: 18 [2023-11-26 10:49:10,534 INFO L226 Difference]: Without dead ends: 17 [2023-11-26 10:49:10,535 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 238 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=148, Invalid=1258, Unknown=0, NotChecked=0, Total=1406 [2023-11-26 10:49:10,538 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 13 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 10:49:10,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 29 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 10:49:10,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2023-11-26 10:49:10,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2023-11-26 10:49:10,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:49:10,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2023-11-26 10:49:10,548 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 14 [2023-11-26 10:49:10,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:49:10,548 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2023-11-26 10:49:10,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 7 states have internal predecessors, (10), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:49:10,549 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2023-11-26 10:49:10,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-26 10:49:10,550 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:49:10,550 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-11-26 10:49:10,558 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbcdebb4-c9bb-48bc-a08d-9527156ab1e2/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-26 10:49:10,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbcdebb4-c9bb-48bc-a08d-9527156ab1e2/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:49:10,756 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting plusErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [plusErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, plusErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-11-26 10:49:10,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:49:10,760 INFO L85 PathProgramCache]: Analyzing trace with hash 1383720584, now seen corresponding path program 1 times [2023-11-26 10:49:10,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:49:10,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722429089] [2023-11-26 10:49:10,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:49:10,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:49:10,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:49:11,088 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:49:11,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:49:11,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722429089] [2023-11-26 10:49:11,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722429089] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:49:11,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1779846240] [2023-11-26 10:49:11,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:49:11,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:49:11,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbcdebb4-c9bb-48bc-a08d-9527156ab1e2/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:49:11,093 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbcdebb4-c9bb-48bc-a08d-9527156ab1e2/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:49:11,112 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbcdebb4-c9bb-48bc-a08d-9527156ab1e2/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 10:49:11,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:49:11,184 INFO L262 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 54 conjunts are in the unsatisfiable core [2023-11-26 10:49:11,189 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:49:11,202 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-26 10:49:11,390 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 3 [2023-11-26 10:49:11,521 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-26 10:49:11,525 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:49:11,526 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:49:11,768 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:49:11,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1779846240] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:49:11,769 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 10:49:11,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 29 [2023-11-26 10:49:11,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350091750] [2023-11-26 10:49:11,769 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 10:49:11,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-11-26 10:49:11,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:49:11,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-11-26 10:49:11,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=811, Unknown=0, NotChecked=0, Total=930 [2023-11-26 10:49:11,773 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand has 31 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 18 states have internal predecessors, (31), 12 states have call successors, (12), 12 states have call predecessors, (12), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:49:12,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:49:12,069 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2023-11-26 10:49:12,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-26 10:49:12,070 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 18 states have internal predecessors, (31), 12 states have call successors, (12), 12 states have call predecessors, (12), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-11-26 10:49:12,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:49:12,071 INFO L225 Difference]: With dead ends: 31 [2023-11-26 10:49:12,071 INFO L226 Difference]: Without dead ends: 30 [2023-11-26 10:49:12,072 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 411 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=205, Invalid=1277, Unknown=0, NotChecked=0, Total=1482 [2023-11-26 10:49:12,074 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 28 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 10:49:12,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 37 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 10:49:12,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2023-11-26 10:49:12,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2023-11-26 10:49:12,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 21 states have (on average 1.0476190476190477) internal successors, (22), 21 states have internal predecessors, (22), 8 states have call successors, (8), 8 states have call predecessors, (8), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:49:12,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2023-11-26 10:49:12,084 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 15 [2023-11-26 10:49:12,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:49:12,085 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2023-11-26 10:49:12,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 18 states have internal predecessors, (31), 12 states have call successors, (12), 12 states have call predecessors, (12), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:49:12,085 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2023-11-26 10:49:12,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-26 10:49:12,087 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:49:12,087 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 1, 1, 1] [2023-11-26 10:49:12,098 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbcdebb4-c9bb-48bc-a08d-9527156ab1e2/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-26 10:49:12,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbcdebb4-c9bb-48bc-a08d-9527156ab1e2/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:49:12,299 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting plusErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [plusErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, plusErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-11-26 10:49:12,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:49:12,299 INFO L85 PathProgramCache]: Analyzing trace with hash 1828078728, now seen corresponding path program 2 times [2023-11-26 10:49:12,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:49:12,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036424782] [2023-11-26 10:49:12,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:49:12,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:49:12,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:49:13,261 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:49:13,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:49:13,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036424782] [2023-11-26 10:49:13,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036424782] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:49:13,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1182444722] [2023-11-26 10:49:13,262 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 10:49:13,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:49:13,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbcdebb4-c9bb-48bc-a08d-9527156ab1e2/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:49:13,263 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbcdebb4-c9bb-48bc-a08d-9527156ab1e2/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:49:13,288 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbcdebb4-c9bb-48bc-a08d-9527156ab1e2/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 10:49:13,337 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-26 10:49:13,338 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 10:49:13,339 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-26 10:49:13,341 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:49:13,432 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-26 10:49:13,457 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-26 10:49:13,457 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:49:13,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1182444722] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:49:13,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 10:49:13,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [20] total 25 [2023-11-26 10:49:13,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760794401] [2023-11-26 10:49:13,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:49:13,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 10:49:13,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:49:13,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 10:49:13,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=562, Unknown=0, NotChecked=0, Total=650 [2023-11-26 10:49:13,462 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand has 6 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:49:13,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:49:13,515 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2023-11-26 10:49:13,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 10:49:13,515 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2023-11-26 10:49:13,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:49:13,517 INFO L225 Difference]: With dead ends: 30 [2023-11-26 10:49:13,517 INFO L226 Difference]: Without dead ends: 0 [2023-11-26 10:49:13,518 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=92, Invalid=610, Unknown=0, NotChecked=0, Total=702 [2023-11-26 10:49:13,521 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 2 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:49:13,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 14 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 10:49:13,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-26 10:49:13,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-26 10:49:13,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:49:13,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-26 10:49:13,527 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 29 [2023-11-26 10:49:13,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:49:13,527 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-26 10:49:13,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:49:13,528 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-26 10:49:13,528 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-26 10:49:13,530 INFO L805 garLoopResultBuilder]: Registering result SAFE for location plusErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2023-11-26 10:49:13,531 INFO L805 garLoopResultBuilder]: Registering result SAFE for location plusErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2023-11-26 10:49:13,540 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbcdebb4-c9bb-48bc-a08d-9527156ab1e2/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-26 10:49:13,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbcdebb4-c9bb-48bc-a08d-9527156ab1e2/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:49:13,739 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-26 10:49:14,177 INFO L899 garLoopResultBuilder]: For program point fooEXIT(lines 11 20) no Hoare annotation was computed. [2023-11-26 10:49:14,178 INFO L899 garLoopResultBuilder]: For program point L14(lines 14 19) no Hoare annotation was computed. [2023-11-26 10:49:14,178 INFO L895 garLoopResultBuilder]: At program point L13(line 13) the Hoare annotation is: (let ((.cse8 (select |old(#memory_int#1)| |foo_#in~p#1.base|))) (let ((.cse4 (select .cse8 |foo_#in~p#1.offset|)) (.cse3 (select |#memory_int#1| |foo_~p#1.base|)) (.cse9 (select |#memory_int#1| |foo_#in~p#1.base|))) (let ((.cse1 (select .cse9 |foo_#in~p#1.offset|)) (.cse5 (select .cse3 0)) (.cse6 (select .cse9 0)) (.cse7 (not (= |foo_#in~p#1.offset| 0))) (.cse0 (<= (+ .cse4 2147483650) 0))) (and (or .cse0 (let ((.cse2 (select .cse3 |foo_~p#1.offset|))) (and (<= 0 (+ 2147483649 .cse1)) (<= .cse2 19) (<= 0 (+ 2147483649 .cse2))))) (or (<= .cse1 2147483646) .cse0 (<= 2147483647 .cse4)) (or (and (= .cse5 10) (= .cse6 10)) .cse7 (not (= .cse4 10))) (or (< 11 (select .cse8 0)) (and (<= .cse5 11) (<= .cse6 11) (= |foo_~p#1.offset| 0)) .cse7 .cse0))))) [2023-11-26 10:49:14,179 INFO L899 garLoopResultBuilder]: For program point L12(lines 12 19) no Hoare annotation was computed. [2023-11-26 10:49:14,179 INFO L899 garLoopResultBuilder]: For program point L12-1(lines 11 20) no Hoare annotation was computed. [2023-11-26 10:49:14,179 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 11 20) the Hoare annotation is: (let ((.cse5 (select |old(#memory_int#1)| |foo_#in~p#1.base|))) (let ((.cse2 (select .cse5 |foo_#in~p#1.offset|)) (.cse6 (select |#memory_int#1| |foo_#in~p#1.base|))) (let ((.cse0 (select .cse6 |foo_#in~p#1.offset|)) (.cse3 (not (= |foo_#in~p#1.offset| 0))) (.cse1 (<= (+ .cse2 2147483650) 0)) (.cse4 (select .cse6 0))) (and (or (<= .cse0 2147483646) .cse1 (<= 2147483647 .cse2)) (or .cse3 (= .cse4 10) (not (= .cse2 10))) (or (< 0 (+ .cse0 2147483650)) .cse1) (or (< 11 (select .cse5 0)) .cse3 .cse1 (<= .cse4 11)))))) [2023-11-26 10:49:14,179 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-26 10:49:14,180 INFO L895 garLoopResultBuilder]: At program point L27(line 27) the Hoare annotation is: (and (= (select (select |#memory_int#1| |ULTIMATE.start_main_~p~0#1.base|) 0) 10) (= |ULTIMATE.start_main_~p~0#1.offset| 0)) [2023-11-26 10:49:14,180 INFO L899 garLoopResultBuilder]: For program point L27-1(line 27) no Hoare annotation was computed. [2023-11-26 10:49:14,180 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-26 10:49:14,180 INFO L899 garLoopResultBuilder]: For program point plusFINAL(lines 6 9) no Hoare annotation was computed. [2023-11-26 10:49:14,180 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 6 9) the Hoare annotation is: (let ((.cse7 (select |old(#memory_int#1)| |plus_#in~p.base|))) (let ((.cse5 (select |#memory_int#1| |plus_#in~p.base|)) (.cse6 (select .cse7 |plus_#in~p.offset|))) (let ((.cse3 (<= (+ 2147483650 .cse6) 0)) (.cse0 (not (= |plus_#in~p.offset| 0))) (.cse2 (select .cse5 0)) (.cse1 (select .cse7 0))) (and (or .cse0 (not (= .cse1 10)) (= 10 .cse2)) (or .cse3 (let ((.cse4 (select .cse5 |plus_#in~p.offset|))) (and (<= 0 (+ 2147483649 .cse4)) (<= .cse4 19))) (< 19 .cse6)) (or .cse3 .cse0 (<= .cse2 11) (< 11 .cse1)))))) [2023-11-26 10:49:14,181 INFO L899 garLoopResultBuilder]: For program point plusErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 7) no Hoare annotation was computed. [2023-11-26 10:49:14,181 INFO L899 garLoopResultBuilder]: For program point plusEXIT(lines 6 9) no Hoare annotation was computed. [2023-11-26 10:49:14,181 INFO L895 garLoopResultBuilder]: At program point L8(line 8) the Hoare annotation is: (let ((.cse8 (select |old(#memory_int#1)| |plus_#in~p.base|))) (let ((.cse7 (select |#memory_int#1| plus_~p.base)) (.cse6 (select |#memory_int#1| |plus_#in~p.base|)) (.cse1 (select .cse8 |plus_#in~p.offset|))) (let ((.cse0 (<= (+ 2147483650 .cse1) 0)) (.cse2 (select .cse6 |plus_#in~p.offset|)) (.cse3 (select .cse7 plus_~p.offset)) (.cse4 (not (= |plus_#in~p.offset| 0))) (.cse5 (select .cse8 0))) (and (or .cse0 (< 19 .cse1) (and (<= 0 (+ .cse2 2147483650)) (<= 0 (+ .cse3 2147483649)))) (or .cse0 .cse4 (< 11 .cse5) (and (<= .cse2 2147483645) (<= .cse3 2147483646))) (or .cse4 (and (<= (select .cse6 0) 11) (= plus_~p.offset 0) (<= (select .cse7 0) 11)) (not (= .cse5 10))))))) [2023-11-26 10:49:14,181 INFO L899 garLoopResultBuilder]: For program point L7(line 7) no Hoare annotation was computed. [2023-11-26 10:49:14,181 INFO L899 garLoopResultBuilder]: For program point plusErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 7) no Hoare annotation was computed. [2023-11-26 10:49:14,182 INFO L899 garLoopResultBuilder]: For program point L7-1(line 7) no Hoare annotation was computed. [2023-11-26 10:49:14,185 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2023-11-26 10:49:14,191 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-26 10:49:14,196 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 10:49:14 BoogieIcfgContainer [2023-11-26 10:49:14,196 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-26 10:49:14,196 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-26 10:49:14,197 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-26 10:49:14,197 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-26 10:49:14,197 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:49:07" (3/4) ... [2023-11-26 10:49:14,200 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-26 10:49:14,207 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure foo [2023-11-26 10:49:14,207 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure plus [2023-11-26 10:49:14,213 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2023-11-26 10:49:14,213 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2023-11-26 10:49:14,214 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-26 10:49:14,214 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-26 10:49:14,321 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbcdebb4-c9bb-48bc-a08d-9527156ab1e2/bin/uautomizer-verify-VRDe98Ueme/witness.graphml [2023-11-26 10:49:14,322 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbcdebb4-c9bb-48bc-a08d-9527156ab1e2/bin/uautomizer-verify-VRDe98Ueme/witness.yml [2023-11-26 10:49:14,322 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-26 10:49:14,323 INFO L158 Benchmark]: Toolchain (without parser) took 7584.11ms. Allocated memory was 123.7MB in the beginning and 161.5MB in the end (delta: 37.7MB). Free memory was 78.4MB in the beginning and 57.2MB in the end (delta: 21.1MB). Peak memory consumption was 60.4MB. Max. memory is 16.1GB. [2023-11-26 10:49:14,323 INFO L158 Benchmark]: CDTParser took 1.39ms. Allocated memory is still 123.7MB. Free memory is still 96.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 10:49:14,324 INFO L158 Benchmark]: CACSL2BoogieTranslator took 255.02ms. Allocated memory is still 123.7MB. Free memory was 78.4MB in the beginning and 68.3MB in the end (delta: 10.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-26 10:49:14,324 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.81ms. Allocated memory is still 123.7MB. Free memory was 68.3MB in the beginning and 67.0MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-26 10:49:14,325 INFO L158 Benchmark]: Boogie Preprocessor took 44.70ms. Allocated memory is still 123.7MB. Free memory was 67.0MB in the beginning and 65.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-26 10:49:14,325 INFO L158 Benchmark]: RCFGBuilder took 541.35ms. Allocated memory was 123.7MB in the beginning and 161.5MB in the end (delta: 37.7MB). Free memory was 65.4MB in the beginning and 133.5MB in the end (delta: -68.2MB). Peak memory consumption was 14.8MB. Max. memory is 16.1GB. [2023-11-26 10:49:14,326 INFO L158 Benchmark]: TraceAbstraction took 6571.50ms. Allocated memory is still 161.5MB. Free memory was 132.4MB in the beginning and 61.4MB in the end (delta: 70.9MB). Peak memory consumption was 70.7MB. Max. memory is 16.1GB. [2023-11-26 10:49:14,326 INFO L158 Benchmark]: Witness Printer took 125.97ms. Allocated memory is still 161.5MB. Free memory was 61.4MB in the beginning and 57.2MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-26 10:49:14,328 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.39ms. Allocated memory is still 123.7MB. Free memory is still 96.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 255.02ms. Allocated memory is still 123.7MB. Free memory was 78.4MB in the beginning and 68.3MB in the end (delta: 10.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.81ms. Allocated memory is still 123.7MB. Free memory was 68.3MB in the beginning and 67.0MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 44.70ms. Allocated memory is still 123.7MB. Free memory was 67.0MB in the beginning and 65.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 541.35ms. Allocated memory was 123.7MB in the beginning and 161.5MB in the end (delta: 37.7MB). Free memory was 65.4MB in the beginning and 133.5MB in the end (delta: -68.2MB). Peak memory consumption was 14.8MB. Max. memory is 16.1GB. * TraceAbstraction took 6571.50ms. Allocated memory is still 161.5MB. Free memory was 132.4MB in the beginning and 61.4MB in the end (delta: 70.9MB). Peak memory consumption was 70.7MB. Max. memory is 16.1GB. * Witness Printer took 125.97ms. Allocated memory is still 161.5MB. Free memory was 61.4MB in the beginning and 57.2MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 7]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 7]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 18 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 6.5s, OverallIterations: 4, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 54 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 54 mSDsluCounter, 134 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 107 mSDsCounter, 12 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 301 IncrementalHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 12 mSolverCounterUnsat, 27 mSDtfsCounter, 301 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 145 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 778 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=3, InterpolantAutomatonStates: 44, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 17 PreInvPairs, 17 NumberOfFragments, 418 HoareAnnotationTreeSize, 17 FomulaSimplifications, 122 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 396 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 3.8s InterpolantComputationTime, 123 NumberOfCodeBlocks, 102 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 143 ConstructedInterpolants, 0 QuantifiedInterpolants, 885 SizeOfPredicates, 43 NumberOfNonLiveVariables, 305 ConjunctsInSsa, 123 ConjunctsInUnsatCore, 9 InterpolantComputations, 3 PerfectInterpolantSequences, 44/111 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! [2023-11-26 10:49:14,347 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbcdebb4-c9bb-48bc-a08d-9527156ab1e2/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE