./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted/Cairo_step2-2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 38b53e6a 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_209d92c4-a43f-4643-aa24-006f478a1bd7/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_209d92c4-a43f-4643-aa24-006f478a1bd7/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_209d92c4-a43f-4643-aa24-006f478a1bd7/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_209d92c4-a43f-4643-aa24-006f478a1bd7/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted/Cairo_step2-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_209d92c4-a43f-4643-aa24-006f478a1bd7/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_209d92c4-a43f-4643-aa24-006f478a1bd7/bin/uautomizer-ZsLfNo2U6R --witnessprinter.witness.filename witness.graphml --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 64bit --witnessprinter.graph.data.programhash 76fcbcb67039c0a78cfe1723cb1895d2882967fdc056ee8f9638db41d873b34f --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 17:45:51,801 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 17:45:51,804 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 17:45:51,830 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 17:45:51,837 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 17:45:51,838 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 17:45:51,841 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 17:45:51,846 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 17:45:51,848 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 17:45:51,850 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 17:45:51,852 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 17:45:51,855 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 17:45:51,856 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 17:45:51,860 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 17:45:51,862 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 17:45:51,864 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 17:45:51,866 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 17:45:51,871 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 17:45:51,873 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 17:45:51,875 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 17:45:51,882 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 17:45:51,885 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 17:45:51,887 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 17:45:51,889 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 17:45:51,895 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 17:45:51,897 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 17:45:51,898 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 17:45:51,899 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 17:45:51,901 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 17:45:51,902 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 17:45:51,903 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 17:45:51,904 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 17:45:51,906 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 17:45:51,907 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 17:45:51,908 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 17:45:51,909 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 17:45:51,909 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 17:45:51,910 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 17:45:51,910 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 17:45:51,914 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 17:45:51,915 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 17:45:51,916 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_209d92c4-a43f-4643-aa24-006f478a1bd7/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Overflow-64bit-Automizer_Default.epf [2022-11-25 17:45:51,960 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 17:45:51,961 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 17:45:51,961 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 17:45:51,962 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 17:45:51,963 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 17:45:51,963 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 17:45:51,964 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 17:45:51,964 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 17:45:51,964 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 17:45:51,965 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 17:45:51,966 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 17:45:51,966 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 17:45:51,966 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 17:45:51,967 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 17:45:51,967 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 17:45:51,967 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 17:45:51,967 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-25 17:45:51,968 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 17:45:51,968 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 17:45:51,968 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 17:45:51,968 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 17:45:51,969 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 17:45:51,969 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 17:45:51,969 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:45:51,970 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 17:45:51,970 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 17:45:51,970 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 17:45:51,970 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 17:45:51,970 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 17:45:51,971 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 17:45:51,971 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 17:45:51,971 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 17:45:51,972 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 17:45:51,972 INFO L138 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_209d92c4-a43f-4643-aa24-006f478a1bd7/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_209d92c4-a43f-4643-aa24-006f478a1bd7/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 76fcbcb67039c0a78cfe1723cb1895d2882967fdc056ee8f9638db41d873b34f [2022-11-25 17:45:52,259 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 17:45:52,294 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 17:45:52,297 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 17:45:52,298 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 17:45:52,299 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 17:45:52,301 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_209d92c4-a43f-4643-aa24-006f478a1bd7/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/termination-crafted/Cairo_step2-2.c [2022-11-25 17:45:55,475 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 17:45:55,680 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 17:45:55,681 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_209d92c4-a43f-4643-aa24-006f478a1bd7/sv-benchmarks/c/termination-crafted/Cairo_step2-2.c [2022-11-25 17:45:55,688 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_209d92c4-a43f-4643-aa24-006f478a1bd7/bin/uautomizer-ZsLfNo2U6R/data/1031c5c54/6ecaec5b5e5e4098b072e9478802efee/FLAG0631259a8 [2022-11-25 17:45:55,704 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_209d92c4-a43f-4643-aa24-006f478a1bd7/bin/uautomizer-ZsLfNo2U6R/data/1031c5c54/6ecaec5b5e5e4098b072e9478802efee [2022-11-25 17:45:55,706 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 17:45:55,708 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 17:45:55,709 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 17:45:55,710 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 17:45:55,714 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 17:45:55,714 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:45:55" (1/1) ... [2022-11-25 17:45:55,716 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1337c044 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:45:55, skipping insertion in model container [2022-11-25 17:45:55,716 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:45:55" (1/1) ... [2022-11-25 17:45:55,724 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 17:45:55,737 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 17:45:55,874 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:45:55,880 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 17:45:55,892 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:45:55,905 INFO L208 MainTranslator]: Completed translation [2022-11-25 17:45:55,906 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:45:55 WrapperNode [2022-11-25 17:45:55,906 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 17:45:55,907 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 17:45:55,907 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 17:45:55,908 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 17:45:55,915 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:45:55" (1/1) ... [2022-11-25 17:45:55,919 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:45:55" (1/1) ... [2022-11-25 17:45:55,933 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 16 [2022-11-25 17:45:55,933 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 17:45:55,934 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 17:45:55,934 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 17:45:55,934 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 17:45:55,941 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:45:55" (1/1) ... [2022-11-25 17:45:55,941 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:45:55" (1/1) ... [2022-11-25 17:45:55,941 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:45:55" (1/1) ... [2022-11-25 17:45:55,942 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:45:55" (1/1) ... [2022-11-25 17:45:55,943 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:45:55" (1/1) ... [2022-11-25 17:45:55,947 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:45:55" (1/1) ... [2022-11-25 17:45:55,948 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:45:55" (1/1) ... [2022-11-25 17:45:55,949 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:45:55" (1/1) ... [2022-11-25 17:45:55,950 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 17:45:55,951 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 17:45:55,951 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 17:45:55,951 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 17:45:55,952 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:45:55" (1/1) ... [2022-11-25 17:45:55,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:45:55,970 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_209d92c4-a43f-4643-aa24-006f478a1bd7/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:45:55,985 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_209d92c4-a43f-4643-aa24-006f478a1bd7/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 17:45:56,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_209d92c4-a43f-4643-aa24-006f478a1bd7/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 17:45:56,035 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 17:45:56,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 17:45:56,109 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 17:45:56,110 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 17:45:56,177 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 17:45:56,183 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 17:45:56,183 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-25 17:45:56,185 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:45:56 BoogieIcfgContainer [2022-11-25 17:45:56,185 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 17:45:56,188 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 17:45:56,188 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 17:45:56,192 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 17:45:56,193 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:45:55" (1/3) ... [2022-11-25 17:45:56,194 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66858610 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:45:56, skipping insertion in model container [2022-11-25 17:45:56,194 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:45:55" (2/3) ... [2022-11-25 17:45:56,194 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66858610 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:45:56, skipping insertion in model container [2022-11-25 17:45:56,194 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:45:56" (3/3) ... [2022-11-25 17:45:56,196 INFO L112 eAbstractionObserver]: Analyzing ICFG Cairo_step2-2.c [2022-11-25 17:45:56,216 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 17:45:56,216 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-25 17:45:56,270 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 17:45:56,277 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=LoopsAndPotentialCycles, 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;@5de8b64c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 17:45:56,278 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-25 17:45:56,282 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 11 states have internal predecessors, (14), 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) [2022-11-25 17:45:56,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-25 17:45:56,289 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:45:56,290 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 17:45:56,290 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-25 17:45:56,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:45:56,297 INFO L85 PathProgramCache]: Analyzing trace with hash 28693987, now seen corresponding path program 1 times [2022-11-25 17:45:56,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:45:56,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225221] [2022-11-25 17:45:56,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:45:56,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:45:56,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:45:56,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:45:56,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:45:56,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225221] [2022-11-25 17:45:56,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225221] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:45:56,457 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:45:56,457 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:45:56,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695044122] [2022-11-25 17:45:56,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:45:56,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:45:56,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:45:56,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:45:56,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:45:56,502 INFO L87 Difference]: Start difference. First operand has 12 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 11 states have internal predecessors, (14), 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) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2022-11-25 17:45:56,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:45:56,581 INFO L93 Difference]: Finished difference Result 20 states and 24 transitions. [2022-11-25 17:45:56,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:45:56,585 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) Word has length 5 [2022-11-25 17:45:56,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:45:56,594 INFO L225 Difference]: With dead ends: 20 [2022-11-25 17:45:56,595 INFO L226 Difference]: Without dead ends: 11 [2022-11-25 17:45:56,598 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:45:56,606 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 2 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 17:45:56,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 13 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 17:45:56,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-11-25 17:45:56,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 10. [2022-11-25 17:45:56,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 8 states have (on average 1.25) internal successors, (10), 9 states have internal predecessors, (10), 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) [2022-11-25 17:45:56,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2022-11-25 17:45:56,636 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 5 [2022-11-25 17:45:56,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:45:56,636 INFO L495 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2022-11-25 17:45:56,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2022-11-25 17:45:56,637 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2022-11-25 17:45:56,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-25 17:45:56,637 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:45:56,638 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-25 17:45:56,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 17:45:56,638 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-25 17:45:56,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:45:56,639 INFO L85 PathProgramCache]: Analyzing trace with hash 889513645, now seen corresponding path program 1 times [2022-11-25 17:45:56,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:45:56,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371728061] [2022-11-25 17:45:56,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:45:56,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:45:56,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:45:56,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:45:56,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:45:56,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371728061] [2022-11-25 17:45:56,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371728061] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:45:56,673 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:45:56,673 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:45:56,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827680277] [2022-11-25 17:45:56,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:45:56,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:45:56,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:45:56,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:45:56,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:45:56,677 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2022-11-25 17:45:56,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:45:56,689 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2022-11-25 17:45:56,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:45:56,692 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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) Word has length 6 [2022-11-25 17:45:56,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:45:56,692 INFO L225 Difference]: With dead ends: 10 [2022-11-25 17:45:56,692 INFO L226 Difference]: Without dead ends: 9 [2022-11-25 17:45:56,693 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:45:56,694 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 1 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 17:45:56,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 3 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 17:45:56,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2022-11-25 17:45:56,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2022-11-25 17:45:56,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 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) [2022-11-25 17:45:56,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-11-25 17:45:56,699 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2022-11-25 17:45:56,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:45:56,699 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-11-25 17:45:56,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2022-11-25 17:45:56,700 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-11-25 17:45:56,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-25 17:45:56,700 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:45:56,700 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-25 17:45:56,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 17:45:56,701 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-25 17:45:56,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:45:56,702 INFO L85 PathProgramCache]: Analyzing trace with hash 124122351, now seen corresponding path program 1 times [2022-11-25 17:45:56,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:45:56,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703782937] [2022-11-25 17:45:56,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:45:56,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:45:56,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:45:56,758 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:45:56,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:45:56,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703782937] [2022-11-25 17:45:56,759 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703782937] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:45:56,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [304187406] [2022-11-25 17:45:56,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:45:56,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:45:56,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_209d92c4-a43f-4643-aa24-006f478a1bd7/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:45:56,783 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_209d92c4-a43f-4643-aa24-006f478a1bd7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:45:56,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_209d92c4-a43f-4643-aa24-006f478a1bd7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 17:45:56,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:45:56,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 17:45:56,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:45:57,004 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:45:57,004 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:45:57,045 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:45:57,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [304187406] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:45:57,045 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:45:57,046 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2022-11-25 17:45:57,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310501617] [2022-11-25 17:45:57,046 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:45:57,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 17:45:57,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:45:57,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 17:45:57,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-25 17:45:57,048 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 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) [2022-11-25 17:45:57,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:45:57,107 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2022-11-25 17:45:57,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 17:45:57,138 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 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) Word has length 8 [2022-11-25 17:45:57,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:45:57,139 INFO L225 Difference]: With dead ends: 19 [2022-11-25 17:45:57,139 INFO L226 Difference]: Without dead ends: 18 [2022-11-25 17:45:57,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-25 17:45:57,141 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 2 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 17:45:57,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 6 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 17:45:57,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-11-25 17:45:57,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-11-25 17:45:57,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 17 states have internal predecessors, (18), 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) [2022-11-25 17:45:57,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2022-11-25 17:45:57,150 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 8 [2022-11-25 17:45:57,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:45:57,150 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2022-11-25 17:45:57,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 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) [2022-11-25 17:45:57,151 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2022-11-25 17:45:57,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-25 17:45:57,151 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:45:57,151 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1] [2022-11-25 17:45:57,167 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_209d92c4-a43f-4643-aa24-006f478a1bd7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-25 17:45:57,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_209d92c4-a43f-4643-aa24-006f478a1bd7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:45:57,363 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-25 17:45:57,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:45:57,364 INFO L85 PathProgramCache]: Analyzing trace with hash 133078755, now seen corresponding path program 2 times [2022-11-25 17:45:57,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:45:57,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162673814] [2022-11-25 17:45:57,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:45:57,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:45:57,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:45:57,591 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:45:57,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:45:57,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162673814] [2022-11-25 17:45:57,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162673814] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:45:57,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1263487961] [2022-11-25 17:45:57,592 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 17:45:57,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:45:57,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_209d92c4-a43f-4643-aa24-006f478a1bd7/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:45:57,594 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_209d92c4-a43f-4643-aa24-006f478a1bd7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:45:57,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_209d92c4-a43f-4643-aa24-006f478a1bd7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 17:45:57,643 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 17:45:57,644 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:45:57,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-25 17:45:57,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:45:57,692 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:45:57,692 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:45:57,792 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:45:57,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1263487961] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:45:57,792 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:45:57,793 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2022-11-25 17:45:57,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060017528] [2022-11-25 17:45:57,793 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:45:57,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-25 17:45:57,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:45:57,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-25 17:45:57,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-11-25 17:45:57,795 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand has 12 states, 11 states have (on average 2.909090909090909) internal successors, (32), 12 states have internal predecessors, (32), 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) [2022-11-25 17:45:57,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:45:57,861 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2022-11-25 17:45:57,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 17:45:57,862 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.909090909090909) internal successors, (32), 12 states have internal predecessors, (32), 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) Word has length 17 [2022-11-25 17:45:57,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:45:57,862 INFO L225 Difference]: With dead ends: 37 [2022-11-25 17:45:57,863 INFO L226 Difference]: Without dead ends: 36 [2022-11-25 17:45:57,863 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-11-25 17:45:57,864 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 2 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 17:45:57,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 7 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 17:45:57,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-11-25 17:45:57,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2022-11-25 17:45:57,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.0285714285714285) internal successors, (36), 35 states have internal predecessors, (36), 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) [2022-11-25 17:45:57,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2022-11-25 17:45:57,874 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 17 [2022-11-25 17:45:57,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:45:57,874 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2022-11-25 17:45:57,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.909090909090909) internal successors, (32), 12 states have internal predecessors, (32), 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) [2022-11-25 17:45:57,875 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2022-11-25 17:45:57,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-25 17:45:57,875 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:45:57,876 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 1, 1, 1, 1] [2022-11-25 17:45:57,888 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_209d92c4-a43f-4643-aa24-006f478a1bd7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-25 17:45:58,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_209d92c4-a43f-4643-aa24-006f478a1bd7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:45:58,082 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-25 17:45:58,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:45:58,083 INFO L85 PathProgramCache]: Analyzing trace with hash -511083421, now seen corresponding path program 3 times [2022-11-25 17:45:58,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:45:58,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303175150] [2022-11-25 17:45:58,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:45:58,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:45:58,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:45:58,480 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:45:58,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:45:58,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303175150] [2022-11-25 17:45:58,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303175150] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:45:58,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1553822457] [2022-11-25 17:45:58,488 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 17:45:58,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:45:58,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_209d92c4-a43f-4643-aa24-006f478a1bd7/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:45:58,493 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_209d92c4-a43f-4643-aa24-006f478a1bd7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:45:58,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_209d92c4-a43f-4643-aa24-006f478a1bd7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 17:45:58,552 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2022-11-25 17:45:58,553 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:45:58,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-25 17:45:58,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:45:58,686 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:45:58,690 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:45:59,009 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:45:59,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1553822457] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:45:59,010 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:45:59,010 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2022-11-25 17:45:59,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45484325] [2022-11-25 17:45:59,010 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:45:59,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-25 17:45:59,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:45:59,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-25 17:45:59,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2022-11-25 17:45:59,013 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand has 24 states, 23 states have (on average 2.9565217391304346) internal successors, (68), 24 states have internal predecessors, (68), 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) [2022-11-25 17:45:59,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:45:59,139 INFO L93 Difference]: Finished difference Result 73 states and 84 transitions. [2022-11-25 17:45:59,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-25 17:45:59,140 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 2.9565217391304346) internal successors, (68), 24 states have internal predecessors, (68), 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) Word has length 35 [2022-11-25 17:45:59,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:45:59,141 INFO L225 Difference]: With dead ends: 73 [2022-11-25 17:45:59,141 INFO L226 Difference]: Without dead ends: 72 [2022-11-25 17:45:59,142 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2022-11-25 17:45:59,143 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 2 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 17:45:59,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 6 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 17:45:59,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2022-11-25 17:45:59,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2022-11-25 17:45:59,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.0140845070422535) internal successors, (72), 71 states have internal predecessors, (72), 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) [2022-11-25 17:45:59,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 72 transitions. [2022-11-25 17:45:59,157 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 72 transitions. Word has length 35 [2022-11-25 17:45:59,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:45:59,158 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 72 transitions. [2022-11-25 17:45:59,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 2.9565217391304346) internal successors, (68), 24 states have internal predecessors, (68), 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) [2022-11-25 17:45:59,158 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 72 transitions. [2022-11-25 17:45:59,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-25 17:45:59,160 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:45:59,160 INFO L195 NwaCegarLoop]: trace histogram [23, 22, 22, 1, 1, 1, 1] [2022-11-25 17:45:59,171 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_209d92c4-a43f-4643-aa24-006f478a1bd7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-25 17:45:59,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_209d92c4-a43f-4643-aa24-006f478a1bd7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:45:59,367 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-25 17:45:59,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:45:59,367 INFO L85 PathProgramCache]: Analyzing trace with hash 2119309155, now seen corresponding path program 4 times [2022-11-25 17:45:59,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:45:59,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078933652] [2022-11-25 17:45:59,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:45:59,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:45:59,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:46:00,131 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 0 proven. 737 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:46:00,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:46:00,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078933652] [2022-11-25 17:46:00,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078933652] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:46:00,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1488018021] [2022-11-25 17:46:00,132 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-25 17:46:00,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:46:00,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_209d92c4-a43f-4643-aa24-006f478a1bd7/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:46:00,135 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_209d92c4-a43f-4643-aa24-006f478a1bd7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:46:00,165 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_209d92c4-a43f-4643-aa24-006f478a1bd7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-25 17:46:00,196 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-25 17:46:00,196 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:46:00,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-25 17:46:00,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:46:00,377 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 0 proven. 737 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:46:00,378 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:46:01,363 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 0 proven. 737 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:46:01,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1488018021] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:46:01,364 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:46:01,364 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 47 [2022-11-25 17:46:01,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357598711] [2022-11-25 17:46:01,364 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:46:01,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-11-25 17:46:01,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:46:01,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-11-25 17:46:01,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2022-11-25 17:46:01,368 INFO L87 Difference]: Start difference. First operand 72 states and 72 transitions. Second operand has 48 states, 47 states have (on average 2.978723404255319) internal successors, (140), 48 states have internal predecessors, (140), 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) [2022-11-25 17:46:01,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:46:01,644 INFO L93 Difference]: Finished difference Result 145 states and 168 transitions. [2022-11-25 17:46:01,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-25 17:46:01,644 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 2.978723404255319) internal successors, (140), 48 states have internal predecessors, (140), 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) Word has length 71 [2022-11-25 17:46:01,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:46:01,650 INFO L225 Difference]: With dead ends: 145 [2022-11-25 17:46:01,650 INFO L226 Difference]: Without dead ends: 144 [2022-11-25 17:46:01,652 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 117 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2022-11-25 17:46:01,653 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 2 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 17:46:01,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 6 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 17:46:01,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2022-11-25 17:46:01,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2022-11-25 17:46:01,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 143 states have (on average 1.006993006993007) internal successors, (144), 143 states have internal predecessors, (144), 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) [2022-11-25 17:46:01,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 144 transitions. [2022-11-25 17:46:01,681 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 144 transitions. Word has length 71 [2022-11-25 17:46:01,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:46:01,683 INFO L495 AbstractCegarLoop]: Abstraction has 144 states and 144 transitions. [2022-11-25 17:46:01,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 2.978723404255319) internal successors, (140), 48 states have internal predecessors, (140), 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) [2022-11-25 17:46:01,684 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 144 transitions. [2022-11-25 17:46:01,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-11-25 17:46:01,694 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:46:01,694 INFO L195 NwaCegarLoop]: trace histogram [47, 46, 46, 1, 1, 1, 1] [2022-11-25 17:46:01,712 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_209d92c4-a43f-4643-aa24-006f478a1bd7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-25 17:46:01,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_209d92c4-a43f-4643-aa24-006f478a1bd7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-25 17:46:01,912 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-25 17:46:01,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:46:01,913 INFO L85 PathProgramCache]: Analyzing trace with hash 1036963171, now seen corresponding path program 5 times [2022-11-25 17:46:01,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:46:01,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736486023] [2022-11-25 17:46:01,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:46:01,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:46:01,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:46:03,913 INFO L134 CoverageAnalysis]: Checked inductivity of 3197 backedges. 0 proven. 3197 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:46:03,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:46:03,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736486023] [2022-11-25 17:46:03,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736486023] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:46:03,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1874237511] [2022-11-25 17:46:03,914 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-25 17:46:03,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:46:03,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_209d92c4-a43f-4643-aa24-006f478a1bd7/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:46:03,915 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_209d92c4-a43f-4643-aa24-006f478a1bd7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:46:03,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_209d92c4-a43f-4643-aa24-006f478a1bd7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-25 17:46:04,068 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2022-11-25 17:46:04,068 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:46:04,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 48 conjunts are in the unsatisfiable core [2022-11-25 17:46:04,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:46:04,355 INFO L134 CoverageAnalysis]: Checked inductivity of 3197 backedges. 0 proven. 3197 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:46:04,357 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:46:07,787 INFO L134 CoverageAnalysis]: Checked inductivity of 3197 backedges. 0 proven. 3197 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:46:07,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1874237511] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:46:07,787 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:46:07,788 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 48] total 95 [2022-11-25 17:46:07,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565860289] [2022-11-25 17:46:07,788 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:46:07,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2022-11-25 17:46:07,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:46:07,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2022-11-25 17:46:07,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2022-11-25 17:46:07,796 INFO L87 Difference]: Start difference. First operand 144 states and 144 transitions. Second operand has 96 states, 95 states have (on average 2.9894736842105263) internal successors, (284), 96 states have internal predecessors, (284), 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) [2022-11-25 17:46:08,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:46:08,333 INFO L93 Difference]: Finished difference Result 289 states and 336 transitions. [2022-11-25 17:46:08,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-11-25 17:46:08,334 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 2.9894736842105263) internal successors, (284), 96 states have internal predecessors, (284), 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) Word has length 143 [2022-11-25 17:46:08,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:46:08,336 INFO L225 Difference]: With dead ends: 289 [2022-11-25 17:46:08,336 INFO L226 Difference]: Without dead ends: 288 [2022-11-25 17:46:08,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 237 SyntacticMatches, 1 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2022-11-25 17:46:08,340 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 2 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-25 17:46:08,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 12 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-25 17:46:08,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2022-11-25 17:46:08,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 288. [2022-11-25 17:46:08,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 287 states have (on average 1.0034843205574913) internal successors, (288), 287 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:08,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 288 transitions. [2022-11-25 17:46:08,361 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 288 transitions. Word has length 143 [2022-11-25 17:46:08,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:46:08,362 INFO L495 AbstractCegarLoop]: Abstraction has 288 states and 288 transitions. [2022-11-25 17:46:08,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 2.9894736842105263) internal successors, (284), 96 states have internal predecessors, (284), 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) [2022-11-25 17:46:08,363 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 288 transitions. [2022-11-25 17:46:08,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2022-11-25 17:46:08,374 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:46:08,374 INFO L195 NwaCegarLoop]: trace histogram [95, 94, 94, 1, 1, 1, 1] [2022-11-25 17:46:08,387 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_209d92c4-a43f-4643-aa24-006f478a1bd7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-25 17:46:08,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_209d92c4-a43f-4643-aa24-006f478a1bd7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:46:08,581 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-25 17:46:08,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:46:08,582 INFO L85 PathProgramCache]: Analyzing trace with hash 561396067, now seen corresponding path program 6 times [2022-11-25 17:46:08,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:46:08,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115922268] [2022-11-25 17:46:08,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:46:08,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:46:08,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:46:15,284 INFO L134 CoverageAnalysis]: Checked inductivity of 13301 backedges. 0 proven. 13301 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:46:15,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:46:15,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115922268] [2022-11-25 17:46:15,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115922268] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:46:15,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1942170768] [2022-11-25 17:46:15,286 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-25 17:46:15,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:46:15,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_209d92c4-a43f-4643-aa24-006f478a1bd7/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:46:15,295 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_209d92c4-a43f-4643-aa24-006f478a1bd7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:46:15,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_209d92c4-a43f-4643-aa24-006f478a1bd7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-25 17:46:15,555 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 95 check-sat command(s) [2022-11-25 17:46:15,555 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:46:15,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 96 conjunts are in the unsatisfiable core [2022-11-25 17:46:15,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:46:16,058 INFO L134 CoverageAnalysis]: Checked inductivity of 13301 backedges. 0 proven. 13301 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:46:16,058 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:46:28,044 INFO L134 CoverageAnalysis]: Checked inductivity of 13301 backedges. 0 proven. 13301 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:46:28,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1942170768] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:46:28,045 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:46:28,045 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96, 96] total 191 [2022-11-25 17:46:28,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381235760] [2022-11-25 17:46:28,045 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:46:28,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2022-11-25 17:46:28,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:46:28,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2022-11-25 17:46:28,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18336, Invalid=18336, Unknown=0, NotChecked=0, Total=36672 [2022-11-25 17:46:28,066 INFO L87 Difference]: Start difference. First operand 288 states and 288 transitions. Second operand has 192 states, 191 states have (on average 2.994764397905759) internal successors, (572), 192 states have internal predecessors, (572), 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) [2022-11-25 17:46:29,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:46:29,554 INFO L93 Difference]: Finished difference Result 577 states and 672 transitions. [2022-11-25 17:46:29,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2022-11-25 17:46:29,555 INFO L78 Accepts]: Start accepts. Automaton has has 192 states, 191 states have (on average 2.994764397905759) internal successors, (572), 192 states have internal predecessors, (572), 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) Word has length 287 [2022-11-25 17:46:29,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:46:29,558 INFO L225 Difference]: With dead ends: 577 [2022-11-25 17:46:29,558 INFO L226 Difference]: Without dead ends: 576 [2022-11-25 17:46:29,561 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 668 GetRequests, 477 SyntacticMatches, 1 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 15.4s TimeCoverageRelationStatistics Valid=18336, Invalid=18336, Unknown=0, NotChecked=0, Total=36672 [2022-11-25 17:46:29,562 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 2 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-25 17:46:29,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 10 Invalid, 586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 584 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-25 17:46:29,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2022-11-25 17:46:29,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 576. [2022-11-25 17:46:29,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 576 states, 575 states have (on average 1.0017391304347827) internal successors, (576), 575 states have internal predecessors, (576), 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) [2022-11-25 17:46:29,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 576 transitions. [2022-11-25 17:46:29,588 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 576 transitions. Word has length 287 [2022-11-25 17:46:29,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:46:29,589 INFO L495 AbstractCegarLoop]: Abstraction has 576 states and 576 transitions. [2022-11-25 17:46:29,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 192 states, 191 states have (on average 2.994764397905759) internal successors, (572), 192 states have internal predecessors, (572), 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) [2022-11-25 17:46:29,590 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 576 transitions. [2022-11-25 17:46:29,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 576 [2022-11-25 17:46:29,599 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:46:29,599 INFO L195 NwaCegarLoop]: trace histogram [191, 190, 190, 1, 1, 1, 1] [2022-11-25 17:46:29,607 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_209d92c4-a43f-4643-aa24-006f478a1bd7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-25 17:46:29,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_209d92c4-a43f-4643-aa24-006f478a1bd7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-25 17:46:29,815 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-25 17:46:29,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:46:29,816 INFO L85 PathProgramCache]: Analyzing trace with hash -478342813, now seen corresponding path program 7 times [2022-11-25 17:46:29,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:46:29,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044604129] [2022-11-25 17:46:29,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:46:29,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:46:30,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:46:54,651 INFO L134 CoverageAnalysis]: Checked inductivity of 54245 backedges. 0 proven. 54245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:46:54,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:46:54,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044604129] [2022-11-25 17:46:54,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044604129] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:46:54,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1604421921] [2022-11-25 17:46:54,652 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-25 17:46:54,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:46:54,652 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_209d92c4-a43f-4643-aa24-006f478a1bd7/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:46:54,660 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_209d92c4-a43f-4643-aa24-006f478a1bd7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:46:54,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_209d92c4-a43f-4643-aa24-006f478a1bd7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-25 17:46:54,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:46:54,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 958 conjuncts, 192 conjunts are in the unsatisfiable core [2022-11-25 17:46:54,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:46:55,854 INFO L134 CoverageAnalysis]: Checked inductivity of 54245 backedges. 0 proven. 54245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:46:55,854 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:47:41,940 INFO L134 CoverageAnalysis]: Checked inductivity of 54245 backedges. 0 proven. 54245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:47:41,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1604421921] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:47:41,940 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:47:41,941 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [192, 192, 192] total 383 [2022-11-25 17:47:41,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438677805] [2022-11-25 17:47:41,941 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:47:41,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 384 states [2022-11-25 17:47:41,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:47:41,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 384 interpolants. [2022-11-25 17:47:41,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73536, Invalid=73536, Unknown=0, NotChecked=0, Total=147072 [2022-11-25 17:47:41,979 INFO L87 Difference]: Start difference. First operand 576 states and 576 transitions. Second operand has 384 states, 383 states have (on average 2.9973890339425586) internal successors, (1148), 384 states have internal predecessors, (1148), 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) [2022-11-25 17:47:49,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:47:49,303 INFO L93 Difference]: Finished difference Result 1153 states and 1344 transitions. [2022-11-25 17:47:49,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 384 states. [2022-11-25 17:47:49,308 INFO L78 Accepts]: Start accepts. Automaton has has 384 states, 383 states have (on average 2.9973890339425586) internal successors, (1148), 384 states have internal predecessors, (1148), 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) Word has length 575 [2022-11-25 17:47:49,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:47:49,313 INFO L225 Difference]: With dead ends: 1153 [2022-11-25 17:47:49,313 INFO L226 Difference]: Without dead ends: 1152 [2022-11-25 17:47:49,322 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1340 GetRequests, 957 SyntacticMatches, 1 SemanticMatches, 382 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 60.3s TimeCoverageRelationStatistics Valid=73536, Invalid=73536, Unknown=0, NotChecked=0, Total=147072 [2022-11-25 17:47:49,323 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 2 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 1172 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 1174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-25 17:47:49,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 16 Invalid, 1174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1172 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-25 17:47:49,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1152 states. [2022-11-25 17:47:49,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1152 to 1152. [2022-11-25 17:47:49,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1152 states, 1151 states have (on average 1.000868809730669) internal successors, (1152), 1151 states have internal predecessors, (1152), 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) [2022-11-25 17:47:49,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1152 states to 1152 states and 1152 transitions. [2022-11-25 17:47:49,365 INFO L78 Accepts]: Start accepts. Automaton has 1152 states and 1152 transitions. Word has length 575 [2022-11-25 17:47:49,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:47:49,366 INFO L495 AbstractCegarLoop]: Abstraction has 1152 states and 1152 transitions. [2022-11-25 17:47:49,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 384 states, 383 states have (on average 2.9973890339425586) internal successors, (1148), 384 states have internal predecessors, (1148), 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) [2022-11-25 17:47:49,367 INFO L276 IsEmpty]: Start isEmpty. Operand 1152 states and 1152 transitions. [2022-11-25 17:47:49,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1152 [2022-11-25 17:47:49,410 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:47:49,410 INFO L195 NwaCegarLoop]: trace histogram [383, 382, 382, 1, 1, 1, 1] [2022-11-25 17:47:49,429 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_209d92c4-a43f-4643-aa24-006f478a1bd7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-25 17:47:49,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_209d92c4-a43f-4643-aa24-006f478a1bd7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-25 17:47:49,624 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-25 17:47:49,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:47:49,625 INFO L85 PathProgramCache]: Analyzing trace with hash -1838497437, now seen corresponding path program 8 times [2022-11-25 17:47:49,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:47:49,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000049344] [2022-11-25 17:47:49,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:47:49,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:47:50,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:49:52,634 INFO L134 CoverageAnalysis]: Checked inductivity of 219077 backedges. 0 proven. 219077 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:49:52,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:49:52,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000049344] [2022-11-25 17:49:52,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000049344] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:49:52,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1945566997] [2022-11-25 17:49:52,635 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 17:49:52,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:49:52,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_209d92c4-a43f-4643-aa24-006f478a1bd7/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:49:52,643 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_209d92c4-a43f-4643-aa24-006f478a1bd7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:49:52,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_209d92c4-a43f-4643-aa24-006f478a1bd7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-25 17:49:53,010 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 17:49:53,010 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:49:53,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 1918 conjuncts, 384 conjunts are in the unsatisfiable core [2022-11-25 17:49:53,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:49:55,160 INFO L134 CoverageAnalysis]: Checked inductivity of 219077 backedges. 0 proven. 219077 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:49:55,161 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:53:09,397 INFO L134 CoverageAnalysis]: Checked inductivity of 219077 backedges. 0 proven. 219077 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:53:09,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1945566997] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:53:09,398 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:53:09,399 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [384, 384, 384] total 767 [2022-11-25 17:53:09,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100628258] [2022-11-25 17:53:09,399 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:53:09,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 768 states [2022-11-25 17:53:09,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:53:09,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 768 interpolants. [2022-11-25 17:53:09,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=294528, Invalid=294528, Unknown=0, NotChecked=0, Total=589056 [2022-11-25 17:53:09,492 INFO L87 Difference]: Start difference. First operand 1152 states and 1152 transitions. Second operand has 768 states, 767 states have (on average 2.9986962190352022) internal successors, (2300), 768 states have internal predecessors, (2300), 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) [2022-11-25 17:53:52,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:53:52,707 INFO L93 Difference]: Finished difference Result 2305 states and 2688 transitions. [2022-11-25 17:53:52,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 768 states. [2022-11-25 17:53:52,709 INFO L78 Accepts]: Start accepts. Automaton has has 768 states, 767 states have (on average 2.9986962190352022) internal successors, (2300), 768 states have internal predecessors, (2300), 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) Word has length 1151 [2022-11-25 17:53:52,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:53:52,717 INFO L225 Difference]: With dead ends: 2305 [2022-11-25 17:53:52,718 INFO L226 Difference]: Without dead ends: 2304 [2022-11-25 17:53:52,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2684 GetRequests, 1917 SyntacticMatches, 1 SemanticMatches, 766 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 382 ImplicationChecksByTransitivity, 254.3s TimeCoverageRelationStatistics Valid=294528, Invalid=294528, Unknown=0, NotChecked=0, Total=589056 [2022-11-25 17:53:52,749 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 2 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2312 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 2314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-25 17:53:52,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 10 Invalid, 2314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 2312 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-25 17:53:52,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2304 states. [2022-11-25 17:53:52,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2304 to 2304. [2022-11-25 17:53:52,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2304 states, 2303 states have (on average 1.0004342162396873) internal successors, (2304), 2303 states have internal predecessors, (2304), 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) [2022-11-25 17:53:52,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2304 states to 2304 states and 2304 transitions. [2022-11-25 17:53:52,840 INFO L78 Accepts]: Start accepts. Automaton has 2304 states and 2304 transitions. Word has length 1151 [2022-11-25 17:53:52,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:53:52,843 INFO L495 AbstractCegarLoop]: Abstraction has 2304 states and 2304 transitions. [2022-11-25 17:53:52,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 768 states, 767 states have (on average 2.9986962190352022) internal successors, (2300), 768 states have internal predecessors, (2300), 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) [2022-11-25 17:53:52,845 INFO L276 IsEmpty]: Start isEmpty. Operand 2304 states and 2304 transitions. [2022-11-25 17:53:52,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2304 [2022-11-25 17:53:52,890 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:53:52,891 INFO L195 NwaCegarLoop]: trace histogram [767, 766, 766, 1, 1, 1, 1] [2022-11-25 17:53:52,899 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_209d92c4-a43f-4643-aa24-006f478a1bd7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-25 17:53:53,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_209d92c4-a43f-4643-aa24-006f478a1bd7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:53:53,091 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-25 17:53:53,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:53:53,093 INFO L85 PathProgramCache]: Analyzing trace with hash -1681514141, now seen corresponding path program 9 times [2022-11-25 17:53:53,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:53:53,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639578037] [2022-11-25 17:53:53,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:53:53,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:53:57,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat