./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-numeric/MultCommutative-1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e6e9f5-63d5-4aaf-99cc-4541f31817a5/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e6e9f5-63d5-4aaf-99cc-4541f31817a5/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e6e9f5-63d5-4aaf-99cc-4541f31817a5/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e6e9f5-63d5-4aaf-99cc-4541f31817a5/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-numeric/MultCommutative-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e6e9f5-63d5-4aaf-99cc-4541f31817a5/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e6e9f5-63d5-4aaf-99cc-4541f31817a5/bin/uautomizer-ug76WZFUDN --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 2f58e1f128e4dbefcdb138e1f7ef5e4260326da20e0bd376d80fe12a55b55920 --- 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-6b4ec56 [2022-11-20 11:59:19,934 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:59:19,936 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:59:19,957 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:59:19,958 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:59:19,959 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:59:19,961 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:59:19,963 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:59:19,965 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:59:19,966 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:59:19,967 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:59:19,969 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:59:19,970 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:59:19,971 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:59:19,972 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:59:19,974 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:59:19,975 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:59:19,976 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:59:19,978 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:59:19,980 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:59:19,982 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:59:19,984 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:59:19,985 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:59:19,986 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:59:19,990 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:59:19,991 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:59:19,991 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:59:19,992 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:59:19,993 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:59:19,994 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:59:19,995 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:59:19,996 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:59:19,997 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:59:19,998 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:59:19,999 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:59:19,999 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:59:20,000 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:59:20,001 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:59:20,001 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:59:20,002 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:59:20,003 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:59:20,004 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e6e9f5-63d5-4aaf-99cc-4541f31817a5/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-64bit-Automizer_Default.epf [2022-11-20 11:59:20,026 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:59:20,027 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:59:20,027 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:59:20,027 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:59:20,028 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:59:20,028 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:59:20,029 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:59:20,029 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:59:20,030 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:59:20,030 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:59:20,030 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 11:59:20,030 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:59:20,031 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:59:20,031 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 11:59:20,031 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:59:20,031 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 11:59:20,032 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-20 11:59:20,032 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:59:20,032 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:59:20,032 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 11:59:20,032 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:59:20,033 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:59:20,033 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:59:20,033 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:59:20,033 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:59:20,034 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:59:20,034 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 11:59:20,034 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:59:20,034 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:59:20,034 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 11:59:20,035 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 11:59:20,035 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 11:59:20,035 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_44e6e9f5-63d5-4aaf-99cc-4541f31817a5/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e6e9f5-63d5-4aaf-99cc-4541f31817a5/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2f58e1f128e4dbefcdb138e1f7ef5e4260326da20e0bd376d80fe12a55b55920 [2022-11-20 11:59:20,293 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:59:20,315 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:59:20,318 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:59:20,319 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:59:20,320 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:59:20,321 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e6e9f5-63d5-4aaf-99cc-4541f31817a5/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/termination-numeric/MultCommutative-1.c [2022-11-20 11:59:23,410 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:59:23,735 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:59:23,735 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e6e9f5-63d5-4aaf-99cc-4541f31817a5/sv-benchmarks/c/termination-numeric/MultCommutative-1.c [2022-11-20 11:59:23,741 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e6e9f5-63d5-4aaf-99cc-4541f31817a5/bin/uautomizer-ug76WZFUDN/data/f9e5209c2/a740e5df26ee45ac8e3cad41058bcb5a/FLAG9b303ace3 [2022-11-20 11:59:23,756 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e6e9f5-63d5-4aaf-99cc-4541f31817a5/bin/uautomizer-ug76WZFUDN/data/f9e5209c2/a740e5df26ee45ac8e3cad41058bcb5a [2022-11-20 11:59:23,759 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:59:23,761 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:59:23,763 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:59:23,763 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:59:23,769 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:59:23,770 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:59:23" (1/1) ... [2022-11-20 11:59:23,772 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e288543 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:59:23, skipping insertion in model container [2022-11-20 11:59:23,772 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:59:23" (1/1) ... [2022-11-20 11:59:23,782 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:59:23,807 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:59:23,965 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e6e9f5-63d5-4aaf-99cc-4541f31817a5/sv-benchmarks/c/termination-numeric/MultCommutative-1.c[1008,1021] [2022-11-20 11:59:23,966 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:59:23,982 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:59:24,001 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e6e9f5-63d5-4aaf-99cc-4541f31817a5/sv-benchmarks/c/termination-numeric/MultCommutative-1.c[1008,1021] [2022-11-20 11:59:24,002 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:59:24,018 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:59:24,019 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:59:24 WrapperNode [2022-11-20 11:59:24,019 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:59:24,021 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:59:24,021 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:59:24,021 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:59:24,031 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:59:24" (1/1) ... [2022-11-20 11:59:24,037 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:59:24" (1/1) ... [2022-11-20 11:59:24,064 INFO L138 Inliner]: procedures = 13, calls = 11, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 36 [2022-11-20 11:59:24,065 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:59:24,066 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:59:24,066 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:59:24,066 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:59:24,077 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:59:24" (1/1) ... [2022-11-20 11:59:24,078 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:59:24" (1/1) ... [2022-11-20 11:59:24,094 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:59:24" (1/1) ... [2022-11-20 11:59:24,094 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:59:24" (1/1) ... [2022-11-20 11:59:24,097 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:59:24" (1/1) ... [2022-11-20 11:59:24,101 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:59:24" (1/1) ... [2022-11-20 11:59:24,104 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:59:24" (1/1) ... [2022-11-20 11:59:24,107 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:59:24" (1/1) ... [2022-11-20 11:59:24,109 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:59:24,110 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:59:24,114 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:59:24,114 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:59:24,115 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:59:24" (1/1) ... [2022-11-20 11:59:24,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:59:24,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e6e9f5-63d5-4aaf-99cc-4541f31817a5/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:59:24,153 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e6e9f5-63d5-4aaf-99cc-4541f31817a5/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:59:24,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e6e9f5-63d5-4aaf-99cc-4541f31817a5/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:59:24,205 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:59:24,205 INFO L130 BoogieDeclarations]: Found specification of procedure mult [2022-11-20 11:59:24,206 INFO L138 BoogieDeclarations]: Found implementation of procedure mult [2022-11-20 11:59:24,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:59:24,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:59:24,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 11:59:24,279 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:59:24,282 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:59:24,528 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:59:24,538 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:59:24,538 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-20 11:59:24,541 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:59:24 BoogieIcfgContainer [2022-11-20 11:59:24,541 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:59:24,557 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:59:24,571 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:59:24,575 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:59:24,575 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:59:23" (1/3) ... [2022-11-20 11:59:24,576 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27fbd642 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:59:24, skipping insertion in model container [2022-11-20 11:59:24,576 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:59:24" (2/3) ... [2022-11-20 11:59:24,577 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27fbd642 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:59:24, skipping insertion in model container [2022-11-20 11:59:24,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:59:24" (3/3) ... [2022-11-20 11:59:24,579 INFO L112 eAbstractionObserver]: Analyzing ICFG MultCommutative-1.c [2022-11-20 11:59:24,616 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:59:24,622 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-20 11:59:24,703 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:59:24,712 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;@17c936e0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:59:24,712 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-11-20 11:59:24,718 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 22 states have (on average 1.5) internal successors, (33), 28 states have internal predecessors, (33), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-20 11:59:24,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-20 11:59:24,727 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:59:24,728 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:59:24,729 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-20 11:59:24,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:59:24,748 INFO L85 PathProgramCache]: Analyzing trace with hash 617794544, now seen corresponding path program 1 times [2022-11-20 11:59:24,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:59:24,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991501705] [2022-11-20 11:59:24,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:59:24,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:59:24,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:25,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:59:25,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:59:25,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991501705] [2022-11-20 11:59:25,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991501705] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:59:25,106 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:59:25,107 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 11:59:25,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418125626] [2022-11-20 11:59:25,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:59:25,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:59:25,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:59:25,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:59:25,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:59:25,155 INFO L87 Difference]: Start difference. First operand has 34 states, 22 states have (on average 1.5) internal successors, (33), 28 states have internal predecessors, (33), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:59:25,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:59:25,346 INFO L93 Difference]: Finished difference Result 81 states and 99 transitions. [2022-11-20 11:59:25,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:59:25,350 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-20 11:59:25,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:59:25,361 INFO L225 Difference]: With dead ends: 81 [2022-11-20 11:59:25,361 INFO L226 Difference]: Without dead ends: 43 [2022-11-20 11:59:25,365 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:59:25,369 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 42 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:59:25,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 87 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:59:25,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-11-20 11:59:25,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 38. [2022-11-20 11:59:25,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 31 states have internal predecessors, (37), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-20 11:59:25,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2022-11-20 11:59:25,419 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 8 [2022-11-20 11:59:25,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:59:25,420 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2022-11-20 11:59:25,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:59:25,420 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2022-11-20 11:59:25,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-20 11:59:25,421 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:59:25,422 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:59:25,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 11:59:25,423 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-20 11:59:25,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:59:25,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1971768732, now seen corresponding path program 1 times [2022-11-20 11:59:25,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:59:25,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800452685] [2022-11-20 11:59:25,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:59:25,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:59:25,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:25,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:59:25,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:59:25,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800452685] [2022-11-20 11:59:25,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800452685] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:59:25,576 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:59:25,577 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 11:59:25,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914527999] [2022-11-20 11:59:25,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:59:25,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:59:25,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:59:25,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:59:25,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:59:25,584 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:59:25,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:59:25,790 INFO L93 Difference]: Finished difference Result 59 states and 73 transitions. [2022-11-20 11:59:25,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:59:25,791 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-20 11:59:25,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:59:25,793 INFO L225 Difference]: With dead ends: 59 [2022-11-20 11:59:25,795 INFO L226 Difference]: Without dead ends: 57 [2022-11-20 11:59:25,796 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:59:25,798 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 36 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:59:25,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 55 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 11:59:25,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-11-20 11:59:25,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 52. [2022-11-20 11:59:25,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 38 states have (on average 1.368421052631579) internal successors, (52), 42 states have internal predecessors, (52), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-20 11:59:25,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 65 transitions. [2022-11-20 11:59:25,824 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 65 transitions. Word has length 9 [2022-11-20 11:59:25,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:59:25,825 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 65 transitions. [2022-11-20 11:59:25,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:59:25,826 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 65 transitions. [2022-11-20 11:59:25,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-20 11:59:25,828 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:59:25,830 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:59:25,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 11:59:25,832 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-20 11:59:25,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:59:25,835 INFO L85 PathProgramCache]: Analyzing trace with hash -323955617, now seen corresponding path program 1 times [2022-11-20 11:59:25,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:59:25,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139482037] [2022-11-20 11:59:25,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:59:25,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:59:25,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:25,952 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:59:25,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:59:25,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139482037] [2022-11-20 11:59:25,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139482037] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:59:25,954 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:59:25,954 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 11:59:25,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566860087] [2022-11-20 11:59:25,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:59:25,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:59:25,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:59:25,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:59:25,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:59:25,957 INFO L87 Difference]: Start difference. First operand 52 states and 65 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:59:26,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:59:26,075 INFO L93 Difference]: Finished difference Result 77 states and 97 transitions. [2022-11-20 11:59:26,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:59:26,076 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-20 11:59:26,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:59:26,078 INFO L225 Difference]: With dead ends: 77 [2022-11-20 11:59:26,078 INFO L226 Difference]: Without dead ends: 76 [2022-11-20 11:59:26,079 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:59:26,080 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 41 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:59:26,081 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 57 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:59:26,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-11-20 11:59:26,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 67. [2022-11-20 11:59:26,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 50 states have (on average 1.36) internal successors, (68), 54 states have internal predecessors, (68), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-20 11:59:26,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 85 transitions. [2022-11-20 11:59:26,101 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 85 transitions. Word has length 14 [2022-11-20 11:59:26,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:59:26,102 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 85 transitions. [2022-11-20 11:59:26,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:59:26,102 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 85 transitions. [2022-11-20 11:59:26,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-20 11:59:26,103 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:59:26,103 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:59:26,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 11:59:26,104 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-20 11:59:26,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:59:26,105 INFO L85 PathProgramCache]: Analyzing trace with hash 1630133947, now seen corresponding path program 1 times [2022-11-20 11:59:26,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:59:26,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477099180] [2022-11-20 11:59:26,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:59:26,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:59:26,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:26,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:59:26,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:26,265 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:59:26,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:59:26,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477099180] [2022-11-20 11:59:26,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477099180] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:59:26,276 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:59:26,276 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 11:59:26,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702703684] [2022-11-20 11:59:26,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:59:26,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:59:26,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:59:26,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:59:26,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:59:26,278 INFO L87 Difference]: Start difference. First operand 67 states and 85 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 11:59:26,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:59:26,415 INFO L93 Difference]: Finished difference Result 121 states and 155 transitions. [2022-11-20 11:59:26,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:59:26,416 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-11-20 11:59:26,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:59:26,418 INFO L225 Difference]: With dead ends: 121 [2022-11-20 11:59:26,423 INFO L226 Difference]: Without dead ends: 85 [2022-11-20 11:59:26,424 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:59:26,425 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 25 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:59:26,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 77 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:59:26,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2022-11-20 11:59:26,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 76. [2022-11-20 11:59:26,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 58 states have (on average 1.3448275862068966) internal successors, (78), 61 states have internal predecessors, (78), 10 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-20 11:59:26,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 97 transitions. [2022-11-20 11:59:26,458 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 97 transitions. Word has length 15 [2022-11-20 11:59:26,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:59:26,459 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 97 transitions. [2022-11-20 11:59:26,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 11:59:26,460 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 97 transitions. [2022-11-20 11:59:26,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-20 11:59:26,461 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:59:26,461 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:59:26,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 11:59:26,464 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-20 11:59:26,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:59:26,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1005448143, now seen corresponding path program 1 times [2022-11-20 11:59:26,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:59:26,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830933404] [2022-11-20 11:59:26,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:59:26,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:59:26,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:26,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:59:26,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:26,562 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:59:26,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:59:26,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830933404] [2022-11-20 11:59:26,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830933404] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:59:26,563 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:59:26,563 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 11:59:26,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598880100] [2022-11-20 11:59:26,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:59:26,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:59:26,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:59:26,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:59:26,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:59:26,566 INFO L87 Difference]: Start difference. First operand 76 states and 97 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 11:59:26,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:59:26,655 INFO L93 Difference]: Finished difference Result 102 states and 131 transitions. [2022-11-20 11:59:26,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:59:26,656 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-11-20 11:59:26,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:59:26,658 INFO L225 Difference]: With dead ends: 102 [2022-11-20 11:59:26,658 INFO L226 Difference]: Without dead ends: 101 [2022-11-20 11:59:26,659 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:59:26,667 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 28 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:59:26,669 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 87 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:59:26,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2022-11-20 11:59:26,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 91. [2022-11-20 11:59:26,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 70 states have (on average 1.3285714285714285) internal successors, (93), 73 states have internal predecessors, (93), 12 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-20 11:59:26,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 116 transitions. [2022-11-20 11:59:26,687 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 116 transitions. Word has length 16 [2022-11-20 11:59:26,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:59:26,688 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 116 transitions. [2022-11-20 11:59:26,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 11:59:26,688 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 116 transitions. [2022-11-20 11:59:26,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-20 11:59:26,698 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:59:26,698 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:59:26,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 11:59:26,699 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-20 11:59:26,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:59:26,700 INFO L85 PathProgramCache]: Analyzing trace with hash -385899469, now seen corresponding path program 1 times [2022-11-20 11:59:26,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:59:26,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78115056] [2022-11-20 11:59:26,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:59:26,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:59:26,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:26,823 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:59:26,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:59:26,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78115056] [2022-11-20 11:59:26,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78115056] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:59:26,826 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:59:26,826 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:59:26,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449113624] [2022-11-20 11:59:26,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:59:26,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:59:26,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:59:26,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:59:26,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:59:26,830 INFO L87 Difference]: Start difference. First operand 91 states and 116 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:59:26,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:59:26,895 INFO L93 Difference]: Finished difference Result 133 states and 169 transitions. [2022-11-20 11:59:26,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:59:26,896 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-20 11:59:26,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:59:26,898 INFO L225 Difference]: With dead ends: 133 [2022-11-20 11:59:26,899 INFO L226 Difference]: Without dead ends: 59 [2022-11-20 11:59:26,904 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:59:26,911 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 23 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:59:26,913 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 62 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:59:26,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-11-20 11:59:26,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 51. [2022-11-20 11:59:26,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 40 states have (on average 1.25) internal successors, (50), 41 states have internal predecessors, (50), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-20 11:59:26,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 61 transitions. [2022-11-20 11:59:26,933 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 61 transitions. Word has length 19 [2022-11-20 11:59:26,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:59:26,934 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 61 transitions. [2022-11-20 11:59:26,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:59:26,934 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 61 transitions. [2022-11-20 11:59:26,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-20 11:59:26,935 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:59:26,936 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:59:26,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 11:59:26,937 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-20 11:59:26,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:59:26,938 INFO L85 PathProgramCache]: Analyzing trace with hash -773947711, now seen corresponding path program 1 times [2022-11-20 11:59:26,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:59:26,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216207679] [2022-11-20 11:59:26,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:59:26,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:59:26,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:27,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-20 11:59:27,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:27,153 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:59:27,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:59:27,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216207679] [2022-11-20 11:59:27,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216207679] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:59:27,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1494304019] [2022-11-20 11:59:27,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:59:27,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:59:27,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e6e9f5-63d5-4aaf-99cc-4541f31817a5/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:59:27,163 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e6e9f5-63d5-4aaf-99cc-4541f31817a5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:59:27,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e6e9f5-63d5-4aaf-99cc-4541f31817a5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 11:59:27,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:27,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 11:59:27,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:59:27,416 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:59:27,416 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:59:27,548 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:59:27,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1494304019] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:59:27,548 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:59:27,549 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 9 [2022-11-20 11:59:27,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112426297] [2022-11-20 11:59:27,549 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:59:27,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 11:59:27,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:59:27,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 11:59:27,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:59:27,551 INFO L87 Difference]: Start difference. First operand 51 states and 61 transitions. Second operand has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-20 11:59:27,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:59:27,733 INFO L93 Difference]: Finished difference Result 67 states and 79 transitions. [2022-11-20 11:59:27,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 11:59:27,734 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 18 [2022-11-20 11:59:27,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:59:27,735 INFO L225 Difference]: With dead ends: 67 [2022-11-20 11:59:27,735 INFO L226 Difference]: Without dead ends: 66 [2022-11-20 11:59:27,735 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 31 SyntacticMatches, 4 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2022-11-20 11:59:27,736 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 35 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:59:27,737 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 80 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:59:27,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2022-11-20 11:59:27,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 57. [2022-11-20 11:59:27,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 45 states have (on average 1.2222222222222223) internal successors, (55), 45 states have internal predecessors, (55), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (7), 7 states have call predecessors, (7), 5 states have call successors, (7) [2022-11-20 11:59:27,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 68 transitions. [2022-11-20 11:59:27,746 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 68 transitions. Word has length 18 [2022-11-20 11:59:27,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:59:27,747 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 68 transitions. [2022-11-20 11:59:27,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-20 11:59:27,747 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 68 transitions. [2022-11-20 11:59:27,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-20 11:59:27,748 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:59:27,748 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:59:27,760 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e6e9f5-63d5-4aaf-99cc-4541f31817a5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 11:59:27,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e6e9f5-63d5-4aaf-99cc-4541f31817a5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-20 11:59:27,955 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-20 11:59:27,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:59:27,955 INFO L85 PathProgramCache]: Analyzing trace with hash 1777424789, now seen corresponding path program 1 times [2022-11-20 11:59:27,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:59:27,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099460304] [2022-11-20 11:59:27,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:59:27,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:59:27,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:28,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-20 11:59:28,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:28,115 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:59:28,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:59:28,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099460304] [2022-11-20 11:59:28,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099460304] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:59:28,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [840042728] [2022-11-20 11:59:28,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:59:28,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:59:28,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e6e9f5-63d5-4aaf-99cc-4541f31817a5/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:59:28,122 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e6e9f5-63d5-4aaf-99cc-4541f31817a5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:59:28,141 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e6e9f5-63d5-4aaf-99cc-4541f31817a5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 11:59:28,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:28,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 11:59:28,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:59:28,275 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:59:28,275 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:59:28,363 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:59:28,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [840042728] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:59:28,363 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:59:28,363 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 8 [2022-11-20 11:59:28,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491712007] [2022-11-20 11:59:28,383 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:59:28,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 11:59:28,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:59:28,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 11:59:28,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-11-20 11:59:28,385 INFO L87 Difference]: Start difference. First operand 57 states and 68 transitions. Second operand has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 11:59:28,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:59:28,517 INFO L93 Difference]: Finished difference Result 65 states and 77 transitions. [2022-11-20 11:59:28,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 11:59:28,518 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2022-11-20 11:59:28,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:59:28,519 INFO L225 Difference]: With dead ends: 65 [2022-11-20 11:59:28,520 INFO L226 Difference]: Without dead ends: 64 [2022-11-20 11:59:28,520 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 34 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2022-11-20 11:59:28,522 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 27 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:59:28,523 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 80 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:59:28,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-11-20 11:59:28,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 57. [2022-11-20 11:59:28,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 45 states have (on average 1.1777777777777778) internal successors, (53), 45 states have internal predecessors, (53), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (7), 7 states have call predecessors, (7), 5 states have call successors, (7) [2022-11-20 11:59:28,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 66 transitions. [2022-11-20 11:59:28,549 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 66 transitions. Word has length 19 [2022-11-20 11:59:28,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:59:28,550 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 66 transitions. [2022-11-20 11:59:28,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 11:59:28,550 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 66 transitions. [2022-11-20 11:59:28,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-20 11:59:28,551 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:59:28,551 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:59:28,560 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e6e9f5-63d5-4aaf-99cc-4541f31817a5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-20 11:59:28,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e6e9f5-63d5-4aaf-99cc-4541f31817a5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:59:28,758 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-20 11:59:28,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:59:28,759 INFO L85 PathProgramCache]: Analyzing trace with hash -211759156, now seen corresponding path program 1 times [2022-11-20 11:59:28,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:59:28,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117263155] [2022-11-20 11:59:28,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:59:28,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:59:28,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:28,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:59:28,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:28,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 11:59:28,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:28,958 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:59:28,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:59:28,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117263155] [2022-11-20 11:59:28,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117263155] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:59:28,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1403168584] [2022-11-20 11:59:28,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:59:28,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:59:28,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e6e9f5-63d5-4aaf-99cc-4541f31817a5/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:59:28,960 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e6e9f5-63d5-4aaf-99cc-4541f31817a5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:59:28,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e6e9f5-63d5-4aaf-99cc-4541f31817a5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 11:59:29,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:29,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 11:59:29,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:59:29,084 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:59:29,085 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:59:29,213 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:59:29,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1403168584] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:59:29,215 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:59:29,216 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 12 [2022-11-20 11:59:29,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378015170] [2022-11-20 11:59:29,216 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:59:29,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-20 11:59:29,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:59:29,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 11:59:29,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-11-20 11:59:29,221 INFO L87 Difference]: Start difference. First operand 57 states and 66 transitions. Second operand has 13 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-20 11:59:29,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:59:29,428 INFO L93 Difference]: Finished difference Result 94 states and 110 transitions. [2022-11-20 11:59:29,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 11:59:29,428 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 25 [2022-11-20 11:59:29,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:59:29,429 INFO L225 Difference]: With dead ends: 94 [2022-11-20 11:59:29,430 INFO L226 Difference]: Without dead ends: 93 [2022-11-20 11:59:29,430 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 45 SyntacticMatches, 4 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:59:29,431 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 45 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:59:29,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 75 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:59:29,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2022-11-20 11:59:29,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 80. [2022-11-20 11:59:29,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 63 states have (on average 1.1587301587301588) internal successors, (73), 63 states have internal predecessors, (73), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (10), 10 states have call predecessors, (10), 7 states have call successors, (10) [2022-11-20 11:59:29,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 92 transitions. [2022-11-20 11:59:29,442 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 92 transitions. Word has length 25 [2022-11-20 11:59:29,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:59:29,443 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 92 transitions. [2022-11-20 11:59:29,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-20 11:59:29,443 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 92 transitions. [2022-11-20 11:59:29,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-20 11:59:29,446 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:59:29,446 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:59:29,452 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e6e9f5-63d5-4aaf-99cc-4541f31817a5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 11:59:29,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e6e9f5-63d5-4aaf-99cc-4541f31817a5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:59:29,652 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-20 11:59:29,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:59:29,653 INFO L85 PathProgramCache]: Analyzing trace with hash 2025400810, now seen corresponding path program 1 times [2022-11-20 11:59:29,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:59:29,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972401315] [2022-11-20 11:59:29,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:59:29,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:59:29,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:29,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:59:29,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:29,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 11:59:29,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:29,756 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 11:59:29,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:59:29,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972401315] [2022-11-20 11:59:29,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972401315] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:59:29,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1103161852] [2022-11-20 11:59:29,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:59:29,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:59:29,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e6e9f5-63d5-4aaf-99cc-4541f31817a5/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:59:29,759 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e6e9f5-63d5-4aaf-99cc-4541f31817a5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:59:29,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e6e9f5-63d5-4aaf-99cc-4541f31817a5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 11:59:29,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:29,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 11:59:29,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:59:29,878 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 11:59:29,879 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:59:29,932 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 11:59:29,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1103161852] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:59:29,933 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:59:29,933 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 8 [2022-11-20 11:59:29,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207392566] [2022-11-20 11:59:29,933 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:59:29,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 11:59:29,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:59:29,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 11:59:29,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-11-20 11:59:29,934 INFO L87 Difference]: Start difference. First operand 80 states and 92 transitions. Second operand has 9 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-20 11:59:30,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:59:30,041 INFO L93 Difference]: Finished difference Result 97 states and 113 transitions. [2022-11-20 11:59:30,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 11:59:30,041 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 26 [2022-11-20 11:59:30,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:59:30,042 INFO L225 Difference]: With dead ends: 97 [2022-11-20 11:59:30,042 INFO L226 Difference]: Without dead ends: 64 [2022-11-20 11:59:30,043 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 50 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2022-11-20 11:59:30,043 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 28 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:59:30,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 132 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:59:30,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-11-20 11:59:30,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 55. [2022-11-20 11:59:30,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 44 states have (on average 1.1136363636363635) internal successors, (49), 43 states have internal predecessors, (49), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (7), 7 states have call predecessors, (7), 5 states have call successors, (7) [2022-11-20 11:59:30,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 62 transitions. [2022-11-20 11:59:30,051 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 62 transitions. Word has length 26 [2022-11-20 11:59:30,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:59:30,051 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 62 transitions. [2022-11-20 11:59:30,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-20 11:59:30,052 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 62 transitions. [2022-11-20 11:59:30,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-20 11:59:30,053 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:59:30,053 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:59:30,064 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e6e9f5-63d5-4aaf-99cc-4541f31817a5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 11:59:30,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e6e9f5-63d5-4aaf-99cc-4541f31817a5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-20 11:59:30,258 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-20 11:59:30,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:59:30,259 INFO L85 PathProgramCache]: Analyzing trace with hash 360381511, now seen corresponding path program 1 times [2022-11-20 11:59:30,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:59:30,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030543072] [2022-11-20 11:59:30,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:59:30,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:59:30,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:59:30,286 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 11:59:30,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:59:30,320 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 11:59:30,320 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 11:59:30,322 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 6 remaining) [2022-11-20 11:59:30,324 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 6 remaining) [2022-11-20 11:59:30,324 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 6 remaining) [2022-11-20 11:59:30,324 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 6 remaining) [2022-11-20 11:59:30,325 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location multErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 6 remaining) [2022-11-20 11:59:30,325 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 6 remaining) [2022-11-20 11:59:30,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 11:59:30,329 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:59:30,334 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 11:59:30,376 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 11:59:30 BoogieIcfgContainer [2022-11-20 11:59:30,376 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 11:59:30,377 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 11:59:30,377 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 11:59:30,377 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 11:59:30,378 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:59:24" (3/4) ... [2022-11-20 11:59:30,382 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-20 11:59:30,452 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e6e9f5-63d5-4aaf-99cc-4541f31817a5/bin/uautomizer-ug76WZFUDN/witness.graphml [2022-11-20 11:59:30,452 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 11:59:30,453 INFO L158 Benchmark]: Toolchain (without parser) took 6691.94ms. Allocated memory is still 199.2MB. Free memory was 169.1MB in the beginning and 145.1MB in the end (delta: 24.0MB). Peak memory consumption was 26.7MB. Max. memory is 16.1GB. [2022-11-20 11:59:30,453 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 121.6MB. Free memory is still 66.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 11:59:30,454 INFO L158 Benchmark]: CACSL2BoogieTranslator took 256.92ms. Allocated memory is still 199.2MB. Free memory was 169.1MB in the beginning and 159.1MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-20 11:59:30,454 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.42ms. Allocated memory is still 199.2MB. Free memory was 159.1MB in the beginning and 157.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 11:59:30,454 INFO L158 Benchmark]: Boogie Preprocessor took 43.88ms. Allocated memory is still 199.2MB. Free memory was 157.4MB in the beginning and 156.4MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 11:59:30,455 INFO L158 Benchmark]: RCFGBuilder took 430.90ms. Allocated memory is still 199.2MB. Free memory was 156.4MB in the beginning and 145.7MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-20 11:59:30,455 INFO L158 Benchmark]: TraceAbstraction took 5819.03ms. Allocated memory is still 199.2MB. Free memory was 145.1MB in the beginning and 147.2MB in the end (delta: -2.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 11:59:30,456 INFO L158 Benchmark]: Witness Printer took 75.69ms. Allocated memory is still 199.2MB. Free memory was 147.2MB in the beginning and 145.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 11:59:30,458 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 121.6MB. Free memory is still 66.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 256.92ms. Allocated memory is still 199.2MB. Free memory was 169.1MB in the beginning and 159.1MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 44.42ms. Allocated memory is still 199.2MB. Free memory was 159.1MB in the beginning and 157.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 43.88ms. Allocated memory is still 199.2MB. Free memory was 157.4MB in the beginning and 156.4MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 430.90ms. Allocated memory is still 199.2MB. Free memory was 156.4MB in the beginning and 145.7MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 5819.03ms. Allocated memory is still 199.2MB. Free memory was 145.1MB in the beginning and 147.2MB in the end (delta: -2.2MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 75.69ms. Allocated memory is still 199.2MB. Free memory was 147.2MB in the beginning and 145.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 24]: integer overflow possible integer overflow possible We found a FailurePath: [L28] int m = __VERIFIER_nondet_int(); [L29] COND FALSE !(m < 0) [L32] int n = __VERIFIER_nondet_int(); [L33] COND FALSE !(n < 0) VAL [m=1073741824, n=2] [L36] CALL mult(m, n) VAL [\old(m)=2, \old(n)=1073741824] [L18] COND FALSE !(m < 0) VAL [\old(m)=2, \old(n)=1073741824, m=2, n=1073741824] [L21] COND FALSE !(m == 0) VAL [\old(m)=2, \old(n)=1073741824, m=2, n=1073741824] [L24] EXPR m - 1 VAL [\old(m)=2, \old(n)=1073741824, m=2, n=1073741824] [L24] CALL, EXPR mult(n, m - 1) VAL [\old(m)=1, \old(n)=1073741824] [L18] COND FALSE !(m < 0) VAL [\old(m)=1, \old(n)=1073741824, m=1, n=1073741824] [L21] COND FALSE !(m == 0) VAL [\old(m)=1, \old(n)=1073741824, m=1, n=1073741824] [L24] EXPR m - 1 VAL [\old(m)=1, \old(n)=1073741824, m=1, n=1073741824] [L24] CALL, EXPR mult(n, m - 1) VAL [\old(m)=0, \old(n)=1073741824] [L18] COND FALSE !(m < 0) VAL [\old(m)=0, \old(n)=1073741824, m=0, n=1073741824] [L21] COND TRUE m == 0 [L22] return 0; VAL [\old(m)=0, \old(n)=1073741824, \result=0, m=0, n=1073741824] [L24] RET, EXPR mult(n, m - 1) VAL [\old(m)=1, \old(n)=1073741824, m=1, mult(n, m - 1)=0, n=1073741824] [L24] EXPR n + mult(n, m - 1) [L24] return n + mult(n, m - 1); [L24] RET, EXPR mult(n, m - 1) VAL [\old(m)=2, \old(n)=1073741824, m=2, mult(n, m - 1)=1073741824, n=1073741824] [L24] n + mult(n, m - 1) VAL [\old(m)=2, \old(n)=1073741824, m=2, mult(n, m - 1)=1073741824, n=1073741824] - UnprovableResult [Line: 19]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 24]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 24]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 24]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 34 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 5.6s, OverallIterations: 11, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 351 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 330 mSDsluCounter, 792 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 555 mSDsCounter, 72 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 660 IncrementalHoareTripleChecker+Invalid, 732 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 72 mSolverCounterUnsat, 237 mSDtfsCounter, 660 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 269 GetRequests, 175 SyntacticMatches, 17 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=91occurred in iteration=5, InterpolantAutomatonStates: 78, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 10 MinimizatonAttempts, 84 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 286 NumberOfCodeBlocks, 286 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 327 ConstructedInterpolants, 0 QuantifiedInterpolants, 866 SizeOfPredicates, 8 NumberOfNonLiveVariables, 318 ConjunctsInSsa, 23 ConjunctsInUnsatCore, 18 InterpolantComputations, 6 PerfectInterpolantSequences, 44/98 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-11-20 11:59:30,493 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e6e9f5-63d5-4aaf-99cc-4541f31817a5/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW)