./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/array-memsafety/openbsd_cstrpbrk-alloca-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b57c6909-be31-4288-98dc-65bee520b017/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b57c6909-be31-4288-98dc-65bee520b017/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_b57c6909-be31-4288-98dc-65bee520b017/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b57c6909-be31-4288-98dc-65bee520b017/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-memsafety/openbsd_cstrpbrk-alloca-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b57c6909-be31-4288-98dc-65bee520b017/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b57c6909-be31-4288-98dc-65bee520b017/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 32bit --witnessprinter.graph.data.programhash d450427152972d80716d02c80706dd3b248a3fc7c05c71ffd29d66e32e1e82f2 --- 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 11:18:03,910 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:18:03,913 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:18:03,937 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:18:03,953 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:18:03,954 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:18:03,956 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:18:03,959 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:18:03,961 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:18:03,962 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:18:03,963 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:18:03,964 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:18:03,965 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:18:03,966 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:18:03,968 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:18:03,969 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:18:03,970 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:18:03,971 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:18:03,973 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:18:03,975 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:18:03,988 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:18:03,993 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:18:03,996 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:18:03,998 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:18:04,004 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:18:04,014 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:18:04,015 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:18:04,016 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:18:04,018 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:18:04,019 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:18:04,021 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:18:04,022 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:18:04,024 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:18:04,025 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:18:04,027 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:18:04,029 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:18:04,030 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:18:04,030 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:18:04,030 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:18:04,032 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:18:04,033 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:18:04,034 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b57c6909-be31-4288-98dc-65bee520b017/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-20 11:18:04,068 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:18:04,068 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:18:04,069 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:18:04,069 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:18:04,070 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:18:04,070 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:18:04,071 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:18:04,071 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:18:04,071 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:18:04,072 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:18:04,072 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 11:18:04,072 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 11:18:04,072 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:18:04,073 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 11:18:04,073 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:18:04,073 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 11:18:04,073 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:18:04,074 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 11:18:04,074 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-20 11:18:04,074 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 11:18:04,074 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:18:04,074 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:18:04,075 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 11:18:04,075 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:18:04,075 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:18:04,076 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:18:04,076 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:18:04,076 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:18:04,076 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:18:04,077 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 11:18:04,077 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:18:04,077 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:18:04,077 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 11:18:04,077 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 11:18:04,078 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 11:18:04,078 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_b57c6909-be31-4288-98dc-65bee520b017/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b57c6909-be31-4288-98dc-65bee520b017/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d450427152972d80716d02c80706dd3b248a3fc7c05c71ffd29d66e32e1e82f2 [2022-11-20 11:18:04,402 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:18:04,427 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:18:04,430 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:18:04,431 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:18:04,432 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:18:04,433 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b57c6909-be31-4288-98dc-65bee520b017/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/array-memsafety/openbsd_cstrpbrk-alloca-2.i [2022-11-20 11:18:07,479 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:18:07,798 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:18:07,801 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b57c6909-be31-4288-98dc-65bee520b017/sv-benchmarks/c/array-memsafety/openbsd_cstrpbrk-alloca-2.i [2022-11-20 11:18:07,819 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b57c6909-be31-4288-98dc-65bee520b017/bin/uautomizer-ug76WZFUDN/data/d0abedee6/5d1bb90fc7fd40b298164c70d13371b5/FLAGecfa284ef [2022-11-20 11:18:07,835 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b57c6909-be31-4288-98dc-65bee520b017/bin/uautomizer-ug76WZFUDN/data/d0abedee6/5d1bb90fc7fd40b298164c70d13371b5 [2022-11-20 11:18:07,838 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:18:07,840 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:18:07,842 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:18:07,842 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:18:07,849 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:18:07,850 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:18:07" (1/1) ... [2022-11-20 11:18:07,851 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@469906ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:18:07, skipping insertion in model container [2022-11-20 11:18:07,852 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:18:07" (1/1) ... [2022-11-20 11:18:07,860 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:18:07,921 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:18:08,373 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:18:08,386 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:18:08,464 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:18:08,504 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:18:08,505 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:18:08 WrapperNode [2022-11-20 11:18:08,506 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:18:08,508 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:18:08,508 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:18:08,508 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:18:08,518 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:18:08" (1/1) ... [2022-11-20 11:18:08,560 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:18:08" (1/1) ... [2022-11-20 11:18:08,587 INFO L138 Inliner]: procedures = 117, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 98 [2022-11-20 11:18:08,591 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:18:08,592 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:18:08,592 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:18:08,592 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:18:08,600 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:18:08" (1/1) ... [2022-11-20 11:18:08,600 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:18:08" (1/1) ... [2022-11-20 11:18:08,604 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:18:08" (1/1) ... [2022-11-20 11:18:08,604 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:18:08" (1/1) ... [2022-11-20 11:18:08,611 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:18:08" (1/1) ... [2022-11-20 11:18:08,616 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:18:08" (1/1) ... [2022-11-20 11:18:08,618 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:18:08" (1/1) ... [2022-11-20 11:18:08,619 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:18:08" (1/1) ... [2022-11-20 11:18:08,622 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:18:08,623 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:18:08,624 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:18:08,624 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:18:08,625 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:18:08" (1/1) ... [2022-11-20 11:18:08,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:18:08,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b57c6909-be31-4288-98dc-65bee520b017/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:18:08,664 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b57c6909-be31-4288-98dc-65bee520b017/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:18:08,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b57c6909-be31-4288-98dc-65bee520b017/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:18:08,717 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 11:18:08,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 11:18:08,718 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 11:18:08,718 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 11:18:08,718 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:18:08,719 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:18:08,842 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:18:08,845 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:18:09,116 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:18:09,158 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:18:09,165 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-20 11:18:09,168 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:18:09 BoogieIcfgContainer [2022-11-20 11:18:09,168 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:18:09,172 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:18:09,172 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:18:09,176 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:18:09,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:18:07" (1/3) ... [2022-11-20 11:18:09,192 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55ffcec2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:18:09, skipping insertion in model container [2022-11-20 11:18:09,192 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:18:08" (2/3) ... [2022-11-20 11:18:09,193 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55ffcec2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:18:09, skipping insertion in model container [2022-11-20 11:18:09,193 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:18:09" (3/3) ... [2022-11-20 11:18:09,195 INFO L112 eAbstractionObserver]: Analyzing ICFG openbsd_cstrpbrk-alloca-2.i [2022-11-20 11:18:09,229 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:18:09,242 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-20 11:18:09,347 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:18:09,369 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;@1cbd0bb3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:18:09,370 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2022-11-20 11:18:09,383 INFO L276 IsEmpty]: Start isEmpty. Operand has 36 states, 27 states have (on average 1.7037037037037037) internal successors, (46), 35 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:18:09,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-20 11:18:09,391 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:18:09,392 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:18:09,392 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-20 11:18:09,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:18:09,414 INFO L85 PathProgramCache]: Analyzing trace with hash 121327154, now seen corresponding path program 1 times [2022-11-20 11:18:09,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:18:09,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622311752] [2022-11-20 11:18:09,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:18:09,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:18:09,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:09,864 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 11:18:09,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:18:09,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622311752] [2022-11-20 11:18:09,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622311752] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:18:09,866 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:18:09,867 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:18:09,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349391718] [2022-11-20 11:18:09,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:18:09,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:18:09,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:18:09,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:18:09,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:18:09,919 INFO L87 Difference]: Start difference. First operand has 36 states, 27 states have (on average 1.7037037037037037) internal successors, (46), 35 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:18:09,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:18:09,996 INFO L93 Difference]: Finished difference Result 92 states and 116 transitions. [2022-11-20 11:18:10,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:18:10,006 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-20 11:18:10,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:18:10,024 INFO L225 Difference]: With dead ends: 92 [2022-11-20 11:18:10,025 INFO L226 Difference]: Without dead ends: 45 [2022-11-20 11:18:10,029 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:18:10,034 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 32 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:18:10,035 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 107 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:18:10,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2022-11-20 11:18:10,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 30. [2022-11-20 11:18:10,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 29 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:18:10,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2022-11-20 11:18:10,079 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 8 [2022-11-20 11:18:10,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:18:10,080 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2022-11-20 11:18:10,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:18:10,080 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2022-11-20 11:18:10,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-20 11:18:10,081 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:18:10,081 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:18:10,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 11:18:10,082 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-20 11:18:10,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:18:10,083 INFO L85 PathProgramCache]: Analyzing trace with hash -533876962, now seen corresponding path program 1 times [2022-11-20 11:18:10,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:18:10,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650148596] [2022-11-20 11:18:10,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:18:10,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:18:10,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:10,184 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 11:18:10,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:18:10,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650148596] [2022-11-20 11:18:10,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650148596] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:18:10,185 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:18:10,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 11:18:10,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498044877] [2022-11-20 11:18:10,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:18:10,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:18:10,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:18:10,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:18:10,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:18:10,190 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:18:10,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:18:10,239 INFO L93 Difference]: Finished difference Result 44 states and 49 transitions. [2022-11-20 11:18:10,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:18:10,240 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-20 11:18:10,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:18:10,240 INFO L225 Difference]: With dead ends: 44 [2022-11-20 11:18:10,241 INFO L226 Difference]: Without dead ends: 29 [2022-11-20 11:18:10,241 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:18:10,243 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 30 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:18:10,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 38 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:18:10,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-11-20 11:18:10,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-11-20 11:18:10,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 28 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:18:10,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2022-11-20 11:18:10,250 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 9 [2022-11-20 11:18:10,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:18:10,250 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2022-11-20 11:18:10,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:18:10,251 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2022-11-20 11:18:10,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-20 11:18:10,251 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:18:10,252 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:18:10,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 11:18:10,252 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-20 11:18:10,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:18:10,254 INFO L85 PathProgramCache]: Analyzing trace with hash 1069581550, now seen corresponding path program 1 times [2022-11-20 11:18:10,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:18:10,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130069395] [2022-11-20 11:18:10,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:18:10,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:18:10,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:10,417 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:18:10,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:18:10,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130069395] [2022-11-20 11:18:10,418 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130069395] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:18:10,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [825005929] [2022-11-20 11:18:10,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:18:10,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:18:10,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b57c6909-be31-4288-98dc-65bee520b017/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:18:10,423 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b57c6909-be31-4288-98dc-65bee520b017/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:18:10,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b57c6909-be31-4288-98dc-65bee520b017/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 11:18:10,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:10,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 11:18:10,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:18:10,791 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 11:18:10,792 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:18:10,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [825005929] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:18:10,792 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:18:10,793 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 9 [2022-11-20 11:18:10,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258194244] [2022-11-20 11:18:10,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:18:10,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:18:10,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:18:10,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:18:10,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-20 11:18:10,806 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:18:10,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:18:10,937 INFO L93 Difference]: Finished difference Result 69 states and 76 transitions. [2022-11-20 11:18:10,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:18:10,938 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-20 11:18:10,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:18:10,942 INFO L225 Difference]: With dead ends: 69 [2022-11-20 11:18:10,944 INFO L226 Difference]: Without dead ends: 49 [2022-11-20 11:18:10,945 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:18:10,947 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 33 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:18:10,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 70 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:18:10,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-11-20 11:18:10,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 42. [2022-11-20 11:18:10,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 35 states have (on average 1.4) internal successors, (49), 41 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:18:10,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2022-11-20 11:18:10,965 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 12 [2022-11-20 11:18:10,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:18:10,966 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2022-11-20 11:18:10,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:18:10,967 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2022-11-20 11:18:10,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-20 11:18:10,968 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:18:10,969 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:18:10,976 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b57c6909-be31-4288-98dc-65bee520b017/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 11:18:11,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b57c6909-be31-4288-98dc-65bee520b017/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:18:11,175 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-20 11:18:11,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:18:11,176 INFO L85 PathProgramCache]: Analyzing trace with hash 676554540, now seen corresponding path program 1 times [2022-11-20 11:18:11,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:18:11,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767091316] [2022-11-20 11:18:11,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:18:11,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:18:11,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:11,416 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 11:18:11,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:18:11,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767091316] [2022-11-20 11:18:11,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767091316] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:18:11,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1953617831] [2022-11-20 11:18:11,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:18:11,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:18:11,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b57c6909-be31-4288-98dc-65bee520b017/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:18:11,423 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b57c6909-be31-4288-98dc-65bee520b017/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:18:11,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b57c6909-be31-4288-98dc-65bee520b017/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 11:18:11,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:11,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 11:18:11,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:18:11,601 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 11:18:11,602 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:18:11,683 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 11:18:11,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1953617831] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:18:11,684 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:18:11,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-20 11:18:11,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84358215] [2022-11-20 11:18:11,685 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:18:11,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 11:18:11,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:18:11,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 11:18:11,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-20 11:18:11,687 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand has 12 states, 11 states have (on average 2.272727272727273) internal successors, (25), 12 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:18:11,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:18:11,891 INFO L93 Difference]: Finished difference Result 100 states and 112 transitions. [2022-11-20 11:18:11,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 11:18:11,892 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.272727272727273) internal successors, (25), 12 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-20 11:18:11,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:18:11,898 INFO L225 Difference]: With dead ends: 100 [2022-11-20 11:18:11,898 INFO L226 Difference]: Without dead ends: 99 [2022-11-20 11:18:11,904 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=113, Invalid=229, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:18:11,905 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 99 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:18:11,910 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 151 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:18:11,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2022-11-20 11:18:11,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 53. [2022-11-20 11:18:11,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 46 states have (on average 1.4130434782608696) internal successors, (65), 52 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:18:11,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 65 transitions. [2022-11-20 11:18:11,925 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 65 transitions. Word has length 12 [2022-11-20 11:18:11,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:18:11,926 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 65 transitions. [2022-11-20 11:18:11,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.272727272727273) internal successors, (25), 12 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:18:11,927 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 65 transitions. [2022-11-20 11:18:11,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-20 11:18:11,928 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:18:11,928 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:18:11,942 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b57c6909-be31-4288-98dc-65bee520b017/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 11:18:12,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b57c6909-be31-4288-98dc-65bee520b017/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:18:12,140 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-20 11:18:12,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:18:12,141 INFO L85 PathProgramCache]: Analyzing trace with hash -501697180, now seen corresponding path program 1 times [2022-11-20 11:18:12,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:18:12,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925635609] [2022-11-20 11:18:12,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:18:12,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:18:12,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:12,254 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:18:12,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:18:12,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925635609] [2022-11-20 11:18:12,255 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925635609] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:18:12,255 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:18:12,255 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 11:18:12,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582379606] [2022-11-20 11:18:12,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:18:12,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:18:12,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:18:12,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:18:12,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:18:12,259 INFO L87 Difference]: Start difference. First operand 53 states and 65 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:18:12,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:18:12,297 INFO L93 Difference]: Finished difference Result 70 states and 86 transitions. [2022-11-20 11:18:12,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:18:12,298 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-20 11:18:12,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:18:12,301 INFO L225 Difference]: With dead ends: 70 [2022-11-20 11:18:12,301 INFO L226 Difference]: Without dead ends: 61 [2022-11-20 11:18:12,302 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:18:12,303 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 21 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:18:12,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 40 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:18:12,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-11-20 11:18:12,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 53. [2022-11-20 11:18:12,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 47 states have (on average 1.3829787234042554) internal successors, (65), 52 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:18:12,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 65 transitions. [2022-11-20 11:18:12,314 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 65 transitions. Word has length 13 [2022-11-20 11:18:12,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:18:12,315 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 65 transitions. [2022-11-20 11:18:12,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:18:12,315 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 65 transitions. [2022-11-20 11:18:12,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-20 11:18:12,316 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:18:12,316 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:18:12,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 11:18:12,317 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-20 11:18:12,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:18:12,318 INFO L85 PathProgramCache]: Analyzing trace with hash -501645681, now seen corresponding path program 1 times [2022-11-20 11:18:12,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:18:12,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302290625] [2022-11-20 11:18:12,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:18:12,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:18:12,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:12,407 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:18:12,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:18:12,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302290625] [2022-11-20 11:18:12,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302290625] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:18:12,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [192430122] [2022-11-20 11:18:12,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:18:12,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:18:12,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b57c6909-be31-4288-98dc-65bee520b017/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:18:12,410 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b57c6909-be31-4288-98dc-65bee520b017/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:18:12,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b57c6909-be31-4288-98dc-65bee520b017/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 11:18:12,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:12,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 11:18:12,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:18:12,545 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:18:12,545 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:18:12,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [192430122] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:18:12,546 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:18:12,546 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-20 11:18:12,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902500789] [2022-11-20 11:18:12,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:18:12,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:18:12,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:18:12,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:18:12,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:18:12,548 INFO L87 Difference]: Start difference. First operand 53 states and 65 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:18:12,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:18:12,613 INFO L93 Difference]: Finished difference Result 53 states and 65 transitions. [2022-11-20 11:18:12,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:18:12,614 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-20 11:18:12,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:18:12,615 INFO L225 Difference]: With dead ends: 53 [2022-11-20 11:18:12,615 INFO L226 Difference]: Without dead ends: 52 [2022-11-20 11:18:12,615 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:18:12,616 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 20 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:18:12,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 47 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:18:12,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-11-20 11:18:12,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2022-11-20 11:18:12,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 47 states have (on average 1.3191489361702127) internal successors, (62), 51 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:18:12,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 62 transitions. [2022-11-20 11:18:12,625 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 62 transitions. Word has length 13 [2022-11-20 11:18:12,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:18:12,625 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 62 transitions. [2022-11-20 11:18:12,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:18:12,626 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 62 transitions. [2022-11-20 11:18:12,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-20 11:18:12,626 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:18:12,627 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:18:12,638 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b57c6909-be31-4288-98dc-65bee520b017/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 11:18:12,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b57c6909-be31-4288-98dc-65bee520b017/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:18:12,833 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-20 11:18:12,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:18:12,833 INFO L85 PathProgramCache]: Analyzing trace with hash 1369092884, now seen corresponding path program 1 times [2022-11-20 11:18:12,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:18:12,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286753628] [2022-11-20 11:18:12,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:18:12,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:18:12,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:12,934 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:18:12,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:18:12,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286753628] [2022-11-20 11:18:12,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286753628] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:18:12,935 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:18:12,936 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:18:12,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914282552] [2022-11-20 11:18:12,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:18:12,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:18:12,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:18:12,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:18:12,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:18:12,939 INFO L87 Difference]: Start difference. First operand 52 states and 62 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:18:12,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:18:12,970 INFO L93 Difference]: Finished difference Result 60 states and 72 transitions. [2022-11-20 11:18:12,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:18:12,970 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-20 11:18:12,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:18:12,974 INFO L225 Difference]: With dead ends: 60 [2022-11-20 11:18:12,974 INFO L226 Difference]: Without dead ends: 58 [2022-11-20 11:18:12,975 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:18:12,976 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 3 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:18:12,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 58 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:18:12,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2022-11-20 11:18:12,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2022-11-20 11:18:12,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 53 states have (on average 1.2830188679245282) internal successors, (68), 57 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:18:12,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 68 transitions. [2022-11-20 11:18:12,986 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 68 transitions. Word has length 14 [2022-11-20 11:18:12,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:18:12,987 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 68 transitions. [2022-11-20 11:18:12,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:18:12,987 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 68 transitions. [2022-11-20 11:18:12,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-20 11:18:12,988 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:18:12,988 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:18:12,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 11:18:12,989 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-20 11:18:12,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:18:12,990 INFO L85 PathProgramCache]: Analyzing trace with hash 356876968, now seen corresponding path program 1 times [2022-11-20 11:18:12,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:18:12,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129334321] [2022-11-20 11:18:12,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:18:12,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:18:13,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:13,069 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 11:18:13,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:18:13,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129334321] [2022-11-20 11:18:13,070 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129334321] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:18:13,070 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:18:13,070 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:18:13,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682960352] [2022-11-20 11:18:13,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:18:13,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:18:13,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:18:13,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:18:13,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:18:13,073 INFO L87 Difference]: Start difference. First operand 58 states and 68 transitions. Second operand has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:18:13,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:18:13,097 INFO L93 Difference]: Finished difference Result 58 states and 68 transitions. [2022-11-20 11:18:13,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:18:13,097 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-20 11:18:13,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:18:13,099 INFO L225 Difference]: With dead ends: 58 [2022-11-20 11:18:13,099 INFO L226 Difference]: Without dead ends: 57 [2022-11-20 11:18:13,099 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:18:13,104 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 7 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:18:13,105 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 18 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:18:13,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-11-20 11:18:13,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 47. [2022-11-20 11:18:13,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 43 states have (on average 1.255813953488372) internal successors, (54), 46 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:18:13,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 54 transitions. [2022-11-20 11:18:13,123 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 54 transitions. Word has length 17 [2022-11-20 11:18:13,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:18:13,124 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 54 transitions. [2022-11-20 11:18:13,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:18:13,124 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 54 transitions. [2022-11-20 11:18:13,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-20 11:18:13,127 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:18:13,127 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:18:13,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 11:18:13,127 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-20 11:18:13,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:18:13,128 INFO L85 PathProgramCache]: Analyzing trace with hash -800645808, now seen corresponding path program 1 times [2022-11-20 11:18:13,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:18:13,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484788975] [2022-11-20 11:18:13,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:18:13,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:18:13,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:13,285 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:18:13,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:18:13,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484788975] [2022-11-20 11:18:13,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484788975] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:18:13,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1370803955] [2022-11-20 11:18:13,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:18:13,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:18:13,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b57c6909-be31-4288-98dc-65bee520b017/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:18:13,288 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b57c6909-be31-4288-98dc-65bee520b017/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:18:13,322 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b57c6909-be31-4288-98dc-65bee520b017/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 11:18:13,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:13,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 11:18:13,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:18:13,503 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:18:13,503 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:18:13,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1370803955] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:18:13,503 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:18:13,503 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 9 [2022-11-20 11:18:13,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118760908] [2022-11-20 11:18:13,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:18:13,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:18:13,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:18:13,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:18:13,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-20 11:18:13,506 INFO L87 Difference]: Start difference. First operand 47 states and 54 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:18:13,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:18:13,569 INFO L93 Difference]: Finished difference Result 93 states and 105 transitions. [2022-11-20 11:18:13,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:18:13,570 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-20 11:18:13,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:18:13,571 INFO L225 Difference]: With dead ends: 93 [2022-11-20 11:18:13,571 INFO L226 Difference]: Without dead ends: 68 [2022-11-20 11:18:13,572 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:18:13,575 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 11 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:18:13,576 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 58 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:18:13,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2022-11-20 11:18:13,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2022-11-20 11:18:13,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 63 states have (on average 1.1746031746031746) internal successors, (74), 66 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:18:13,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 74 transitions. [2022-11-20 11:18:13,592 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 74 transitions. Word has length 18 [2022-11-20 11:18:13,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:18:13,593 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 74 transitions. [2022-11-20 11:18:13,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:18:13,593 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 74 transitions. [2022-11-20 11:18:13,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-20 11:18:13,594 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:18:13,594 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:18:13,606 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b57c6909-be31-4288-98dc-65bee520b017/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 11:18:13,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b57c6909-be31-4288-98dc-65bee520b017/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:18:13,795 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-20 11:18:13,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:18:13,795 INFO L85 PathProgramCache]: Analyzing trace with hash -2080509486, now seen corresponding path program 1 times [2022-11-20 11:18:13,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:18:13,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550617483] [2022-11-20 11:18:13,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:18:13,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:18:13,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:13,877 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:18:13,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:18:13,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550617483] [2022-11-20 11:18:13,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550617483] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:18:13,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1291096578] [2022-11-20 11:18:13,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:18:13,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:18:13,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b57c6909-be31-4288-98dc-65bee520b017/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:18:13,879 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b57c6909-be31-4288-98dc-65bee520b017/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:18:13,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b57c6909-be31-4288-98dc-65bee520b017/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 11:18:13,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:13,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 11:18:13,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:18:14,015 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:18:14,015 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:18:14,071 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:18:14,071 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1291096578] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:18:14,071 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:18:14,072 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-20 11:18:14,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299781973] [2022-11-20 11:18:14,072 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:18:14,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 11:18:14,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:18:14,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 11:18:14,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-20 11:18:14,075 INFO L87 Difference]: Start difference. First operand 67 states and 74 transitions. Second operand has 12 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 12 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:18:14,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:18:14,197 INFO L93 Difference]: Finished difference Result 95 states and 104 transitions. [2022-11-20 11:18:14,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 11:18:14,197 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 12 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-20 11:18:14,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:18:14,198 INFO L225 Difference]: With dead ends: 95 [2022-11-20 11:18:14,198 INFO L226 Difference]: Without dead ends: 94 [2022-11-20 11:18:14,199 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=113, Invalid=229, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:18:14,200 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 36 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:18:14,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 105 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:18:14,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2022-11-20 11:18:14,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 78. [2022-11-20 11:18:14,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 74 states have (on average 1.2162162162162162) internal successors, (90), 77 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:18:14,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 90 transitions. [2022-11-20 11:18:14,219 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 90 transitions. Word has length 18 [2022-11-20 11:18:14,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:18:14,222 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 90 transitions. [2022-11-20 11:18:14,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 12 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:18:14,222 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 90 transitions. [2022-11-20 11:18:14,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-20 11:18:14,224 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:18:14,225 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:18:14,237 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b57c6909-be31-4288-98dc-65bee520b017/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 11:18:14,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b57c6909-be31-4288-98dc-65bee520b017/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-20 11:18:14,432 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-20 11:18:14,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:18:14,432 INFO L85 PathProgramCache]: Analyzing trace with hash -71335194, now seen corresponding path program 1 times [2022-11-20 11:18:14,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:18:14,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051700993] [2022-11-20 11:18:14,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:18:14,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:18:14,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:14,507 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 11:18:14,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:18:14,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051700993] [2022-11-20 11:18:14,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051700993] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:18:14,508 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:18:14,508 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:18:14,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617917155] [2022-11-20 11:18:14,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:18:14,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:18:14,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:18:14,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:18:14,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:18:14,510 INFO L87 Difference]: Start difference. First operand 78 states and 90 transitions. Second operand has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:18:14,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:18:14,531 INFO L93 Difference]: Finished difference Result 78 states and 90 transitions. [2022-11-20 11:18:14,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:18:14,532 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-20 11:18:14,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:18:14,533 INFO L225 Difference]: With dead ends: 78 [2022-11-20 11:18:14,533 INFO L226 Difference]: Without dead ends: 74 [2022-11-20 11:18:14,533 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:18:14,534 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 4 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:18:14,534 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 19 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:18:14,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-11-20 11:18:14,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2022-11-20 11:18:14,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 71 states have (on average 1.1690140845070423) internal successors, (83), 73 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:18:14,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 83 transitions. [2022-11-20 11:18:14,543 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 83 transitions. Word has length 19 [2022-11-20 11:18:14,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:18:14,544 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 83 transitions. [2022-11-20 11:18:14,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:18:14,544 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 83 transitions. [2022-11-20 11:18:14,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-20 11:18:14,545 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:18:14,545 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:18:14,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 11:18:14,546 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-20 11:18:14,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:18:14,546 INFO L85 PathProgramCache]: Analyzing trace with hash -71284549, now seen corresponding path program 1 times [2022-11-20 11:18:14,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:18:14,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873874314] [2022-11-20 11:18:14,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:18:14,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:18:14,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:14,622 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:18:14,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:18:14,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873874314] [2022-11-20 11:18:14,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873874314] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:18:14,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1933693038] [2022-11-20 11:18:14,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:18:14,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:18:14,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b57c6909-be31-4288-98dc-65bee520b017/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:18:14,624 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b57c6909-be31-4288-98dc-65bee520b017/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:18:14,658 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b57c6909-be31-4288-98dc-65bee520b017/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 11:18:14,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:14,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 11:18:14,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:18:14,766 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:18:14,766 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:18:14,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1933693038] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:18:14,767 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:18:14,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-20 11:18:14,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563305145] [2022-11-20 11:18:14,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:18:14,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:18:14,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:18:14,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:18:14,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:18:14,768 INFO L87 Difference]: Start difference. First operand 74 states and 83 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:18:14,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:18:14,816 INFO L93 Difference]: Finished difference Result 74 states and 83 transitions. [2022-11-20 11:18:14,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:18:14,817 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-20 11:18:14,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:18:14,818 INFO L225 Difference]: With dead ends: 74 [2022-11-20 11:18:14,818 INFO L226 Difference]: Without dead ends: 73 [2022-11-20 11:18:14,818 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:18:14,819 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 7 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:18:14,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 52 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:18:14,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-11-20 11:18:14,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2022-11-20 11:18:14,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 71 states have (on average 1.1267605633802817) internal successors, (80), 72 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:18:14,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 80 transitions. [2022-11-20 11:18:14,828 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 80 transitions. Word has length 19 [2022-11-20 11:18:14,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:18:14,829 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 80 transitions. [2022-11-20 11:18:14,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:18:14,829 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 80 transitions. [2022-11-20 11:18:14,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-20 11:18:14,830 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:18:14,830 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1, 1] [2022-11-20 11:18:14,842 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b57c6909-be31-4288-98dc-65bee520b017/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-20 11:18:15,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b57c6909-be31-4288-98dc-65bee520b017/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-20 11:18:15,037 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-20 11:18:15,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:18:15,038 INFO L85 PathProgramCache]: Analyzing trace with hash 1475160672, now seen corresponding path program 2 times [2022-11-20 11:18:15,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:18:15,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971287386] [2022-11-20 11:18:15,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:18:15,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:18:15,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:15,253 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:18:15,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:18:15,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971287386] [2022-11-20 11:18:15,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971287386] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:18:15,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1387758941] [2022-11-20 11:18:15,254 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:18:15,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:18:15,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b57c6909-be31-4288-98dc-65bee520b017/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:18:15,262 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b57c6909-be31-4288-98dc-65bee520b017/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:18:15,293 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b57c6909-be31-4288-98dc-65bee520b017/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-20 11:18:15,349 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 11:18:15,349 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:18:15,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 11:18:15,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:18:15,426 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-20 11:18:15,427 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:18:15,494 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-20 11:18:15,494 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1387758941] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:18:15,494 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:18:15,495 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 4, 4] total 14 [2022-11-20 11:18:15,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400662673] [2022-11-20 11:18:15,495 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:18:15,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 11:18:15,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:18:15,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 11:18:15,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-11-20 11:18:15,498 INFO L87 Difference]: Start difference. First operand 73 states and 80 transitions. Second operand has 15 states, 14 states have (on average 2.5) internal successors, (35), 15 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:18:15,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:18:15,748 INFO L93 Difference]: Finished difference Result 190 states and 201 transitions. [2022-11-20 11:18:15,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 11:18:15,748 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.5) internal successors, (35), 15 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-11-20 11:18:15,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:18:15,749 INFO L225 Difference]: With dead ends: 190 [2022-11-20 11:18:15,749 INFO L226 Difference]: Without dead ends: 163 [2022-11-20 11:18:15,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 42 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=207, Invalid=495, Unknown=0, NotChecked=0, Total=702 [2022-11-20 11:18:15,752 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 148 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:18:15,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 59 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:18:15,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2022-11-20 11:18:15,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 38. [2022-11-20 11:18:15,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.0810810810810811) internal successors, (40), 37 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:18:15,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 40 transitions. [2022-11-20 11:18:15,760 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 40 transitions. Word has length 24 [2022-11-20 11:18:15,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:18:15,760 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 40 transitions. [2022-11-20 11:18:15,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.5) internal successors, (35), 15 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:18:15,760 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 40 transitions. [2022-11-20 11:18:15,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-20 11:18:15,764 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:18:15,764 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:18:15,775 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b57c6909-be31-4288-98dc-65bee520b017/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-20 11:18:15,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b57c6909-be31-4288-98dc-65bee520b017/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:18:15,970 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-20 11:18:15,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:18:15,971 INFO L85 PathProgramCache]: Analyzing trace with hash -1856140922, now seen corresponding path program 2 times [2022-11-20 11:18:15,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:18:15,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881256525] [2022-11-20 11:18:15,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:18:15,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:18:15,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:16,155 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:18:16,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:18:16,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881256525] [2022-11-20 11:18:16,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881256525] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:18:16,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [951254086] [2022-11-20 11:18:16,156 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:18:16,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:18:16,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b57c6909-be31-4288-98dc-65bee520b017/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:18:16,158 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b57c6909-be31-4288-98dc-65bee520b017/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:18:16,186 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b57c6909-be31-4288-98dc-65bee520b017/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-20 11:18:16,253 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 11:18:16,254 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:18:16,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 11:18:16,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:18:16,360 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-11-20 11:18:16,361 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:18:16,449 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-11-20 11:18:16,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [951254086] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:18:16,449 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:18:16,449 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 4, 4] total 14 [2022-11-20 11:18:16,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700121607] [2022-11-20 11:18:16,450 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:18:16,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 11:18:16,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:18:16,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 11:18:16,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-11-20 11:18:16,452 INFO L87 Difference]: Start difference. First operand 38 states and 40 transitions. Second operand has 15 states, 14 states have (on average 3.357142857142857) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:18:16,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:18:16,676 INFO L93 Difference]: Finished difference Result 44 states and 47 transitions. [2022-11-20 11:18:16,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 11:18:16,676 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 3.357142857142857) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-11-20 11:18:16,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:18:16,677 INFO L225 Difference]: With dead ends: 44 [2022-11-20 11:18:16,677 INFO L226 Difference]: Without dead ends: 0 [2022-11-20 11:18:16,677 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 54 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=207, Invalid=495, Unknown=0, NotChecked=0, Total=702 [2022-11-20 11:18:16,678 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 31 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:18:16,678 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 63 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:18:16,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-20 11:18:16,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-20 11:18:16,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:18:16,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-20 11:18:16,679 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 30 [2022-11-20 11:18:16,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:18:16,679 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-20 11:18:16,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 3.357142857142857) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:18:16,680 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-20 11:18:16,680 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-20 11:18:16,682 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 8 remaining) [2022-11-20 11:18:16,686 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 8 remaining) [2022-11-20 11:18:16,687 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 8 remaining) [2022-11-20 11:18:16,687 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 8 remaining) [2022-11-20 11:18:16,687 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 8 remaining) [2022-11-20 11:18:16,687 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 8 remaining) [2022-11-20 11:18:16,688 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 8 remaining) [2022-11-20 11:18:16,688 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 8 remaining) [2022-11-20 11:18:16,698 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b57c6909-be31-4288-98dc-65bee520b017/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-20 11:18:16,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b57c6909-be31-4288-98dc-65bee520b017/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:18:16,892 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-20 11:18:17,425 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 541) no Hoare annotation was computed. [2022-11-20 11:18:17,425 INFO L899 garLoopResultBuilder]: For program point L531-1(lines 531 533) no Hoare annotation was computed. [2022-11-20 11:18:17,425 INFO L902 garLoopResultBuilder]: At program point L523(lines 513 524) the Hoare annotation is: true [2022-11-20 11:18:17,426 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW(line 547) no Hoare annotation was computed. [2022-11-20 11:18:17,426 INFO L899 garLoopResultBuilder]: For program point L519-1(lines 519 521) no Hoare annotation was computed. [2022-11-20 11:18:17,426 INFO L902 garLoopResultBuilder]: At program point L519-3(lines 519 521) the Hoare annotation is: true [2022-11-20 11:18:17,426 INFO L902 garLoopResultBuilder]: At program point L519-4(lines 518 522) the Hoare annotation is: true [2022-11-20 11:18:17,426 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-11-20 11:18:17,426 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 537) no Hoare annotation was computed. [2022-11-20 11:18:17,426 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-20 11:18:17,426 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 546) no Hoare annotation was computed. [2022-11-20 11:18:17,426 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-11-20 11:18:17,426 INFO L899 garLoopResultBuilder]: For program point L528(lines 528 530) no Hoare annotation was computed. [2022-11-20 11:18:17,427 INFO L899 garLoopResultBuilder]: For program point L528-2(lines 525 550) no Hoare annotation was computed. [2022-11-20 11:18:17,427 INFO L899 garLoopResultBuilder]: For program point L520(lines 520 521) no Hoare annotation was computed. [2022-11-20 11:18:17,427 INFO L902 garLoopResultBuilder]: At program point L549(lines 525 550) the Hoare annotation is: true [2022-11-20 11:18:17,427 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 537) no Hoare annotation was computed. [2022-11-20 11:18:17,427 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-20 11:18:17,427 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 546) no Hoare annotation was computed. [2022-11-20 11:18:17,427 INFO L899 garLoopResultBuilder]: For program point L541-2(lines 541 544) no Hoare annotation was computed. [2022-11-20 11:18:17,427 INFO L899 garLoopResultBuilder]: For program point L541-3(line 541) no Hoare annotation was computed. [2022-11-20 11:18:17,427 INFO L899 garLoopResultBuilder]: For program point L541-4(line 541) no Hoare annotation was computed. [2022-11-20 11:18:17,428 INFO L895 garLoopResultBuilder]: At program point L541-5(lines 541 544) the Hoare annotation is: (let ((.cse0 (<= 1 |ULTIMATE.start_main_~i~0#1|)) (.cse1 (<= 1 |ULTIMATE.start_main_~length1~0#1|)) (.cse2 (<= 1 |ULTIMATE.start_main_~length2~0#1|)) (.cse3 (<= |ULTIMATE.start_main_~length1~0#1| 2147483647)) (.cse4 (<= |ULTIMATE.start_main_~length2~0#1| 2147483647))) (or (and .cse0 .cse1 .cse2 .cse3 (<= 1 |ULTIMATE.start_main_~i~1#1|) .cse4) (and .cse0 (= |ULTIMATE.start_main_~i~1#1| 0) .cse1 .cse2 .cse3 .cse4))) [2022-11-20 11:18:17,428 INFO L899 garLoopResultBuilder]: For program point L537-2(lines 537 540) no Hoare annotation was computed. [2022-11-20 11:18:17,428 INFO L899 garLoopResultBuilder]: For program point L541-6(lines 541 544) no Hoare annotation was computed. [2022-11-20 11:18:17,428 INFO L899 garLoopResultBuilder]: For program point L537-3(line 537) no Hoare annotation was computed. [2022-11-20 11:18:17,428 INFO L899 garLoopResultBuilder]: For program point L537-4(line 537) no Hoare annotation was computed. [2022-11-20 11:18:17,428 INFO L895 garLoopResultBuilder]: At program point L537-5(lines 537 540) the Hoare annotation is: (let ((.cse0 (<= 1 |ULTIMATE.start_main_~length1~0#1|)) (.cse1 (<= 1 |ULTIMATE.start_main_~length2~0#1|)) (.cse2 (<= |ULTIMATE.start_main_~length1~0#1| 2147483647)) (.cse3 (<= |ULTIMATE.start_main_~length2~0#1| 2147483647))) (or (and (= |ULTIMATE.start_main_~i~0#1| 0) .cse0 .cse1 .cse2 .cse3) (and (<= 1 |ULTIMATE.start_main_~i~0#1|) .cse0 .cse1 .cse2 .cse3))) [2022-11-20 11:18:17,428 INFO L899 garLoopResultBuilder]: For program point L537-6(lines 537 540) no Hoare annotation was computed. [2022-11-20 11:18:17,429 INFO L899 garLoopResultBuilder]: For program point L546(line 546) no Hoare annotation was computed. [2022-11-20 11:18:17,429 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 541) no Hoare annotation was computed. [2022-11-20 11:18:17,429 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW(line 547) no Hoare annotation was computed. [2022-11-20 11:18:17,429 INFO L899 garLoopResultBuilder]: For program point L518-1(lines 518 522) no Hoare annotation was computed. [2022-11-20 11:18:17,429 INFO L899 garLoopResultBuilder]: For program point L547(line 547) no Hoare annotation was computed. [2022-11-20 11:18:17,429 INFO L899 garLoopResultBuilder]: For program point L518-3(lines 518 522) no Hoare annotation was computed. [2022-11-20 11:18:17,429 INFO L899 garLoopResultBuilder]: For program point L547-1(line 547) no Hoare annotation was computed. [2022-11-20 11:18:17,433 INFO L444 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:18:17,435 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 11:18:17,454 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 11:18:17 BoogieIcfgContainer [2022-11-20 11:18:17,454 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 11:18:17,455 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 11:18:17,455 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 11:18:17,455 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 11:18:17,456 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:18:09" (3/4) ... [2022-11-20 11:18:17,460 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-20 11:18:17,473 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2022-11-20 11:18:17,473 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-20 11:18:17,473 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-20 11:18:17,474 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-20 11:18:17,519 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b57c6909-be31-4288-98dc-65bee520b017/bin/uautomizer-ug76WZFUDN/witness.graphml [2022-11-20 11:18:17,519 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 11:18:17,520 INFO L158 Benchmark]: Toolchain (without parser) took 9680.07ms. Allocated memory was 178.3MB in the beginning and 213.9MB in the end (delta: 35.7MB). Free memory was 148.5MB in the beginning and 99.0MB in the end (delta: 49.4MB). Peak memory consumption was 85.1MB. Max. memory is 16.1GB. [2022-11-20 11:18:17,520 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 130.0MB. Free memory is still 100.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 11:18:17,521 INFO L158 Benchmark]: CACSL2BoogieTranslator took 664.99ms. Allocated memory is still 178.3MB. Free memory was 148.5MB in the beginning and 142.0MB in the end (delta: 6.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-20 11:18:17,521 INFO L158 Benchmark]: Boogie Procedure Inliner took 83.24ms. Allocated memory is still 178.3MB. Free memory was 142.0MB in the beginning and 139.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 11:18:17,522 INFO L158 Benchmark]: Boogie Preprocessor took 30.95ms. Allocated memory is still 178.3MB. Free memory was 139.9MB in the beginning and 138.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 11:18:17,522 INFO L158 Benchmark]: RCFGBuilder took 545.26ms. Allocated memory is still 178.3MB. Free memory was 138.6MB in the beginning and 125.2MB in the end (delta: 13.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-20 11:18:17,523 INFO L158 Benchmark]: TraceAbstraction took 8282.89ms. Allocated memory was 178.3MB in the beginning and 213.9MB in the end (delta: 35.7MB). Free memory was 124.6MB in the beginning and 102.2MB in the end (delta: 22.5MB). Peak memory consumption was 107.7MB. Max. memory is 16.1GB. [2022-11-20 11:18:17,523 INFO L158 Benchmark]: Witness Printer took 64.47ms. Allocated memory is still 213.9MB. Free memory was 102.2MB in the beginning and 99.0MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 11:18:17,525 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 130.0MB. Free memory is still 100.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 664.99ms. Allocated memory is still 178.3MB. Free memory was 148.5MB in the beginning and 142.0MB in the end (delta: 6.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 83.24ms. Allocated memory is still 178.3MB. Free memory was 142.0MB in the beginning and 139.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.95ms. Allocated memory is still 178.3MB. Free memory was 139.9MB in the beginning and 138.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 545.26ms. Allocated memory is still 178.3MB. Free memory was 138.6MB in the beginning and 125.2MB in the end (delta: 13.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 8282.89ms. Allocated memory was 178.3MB in the beginning and 213.9MB in the end (delta: 35.7MB). Free memory was 124.6MB in the beginning and 102.2MB in the end (delta: 22.5MB). Peak memory consumption was 107.7MB. Max. memory is 16.1GB. * Witness Printer took 64.47ms. Allocated memory is still 213.9MB. Free memory was 102.2MB in the beginning and 99.0MB in the end (delta: 3.1MB). 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 - PositiveResult [Line: 537]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 537]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 541]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 541]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 546]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 546]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 547]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 547]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 36 locations, 8 error locations. Started 1 CEGAR loops. OverallTime: 8.1s, OverallIterations: 14, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 482 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 482 mSDsluCounter, 885 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 619 mSDsCounter, 53 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 438 IncrementalHoareTripleChecker+Invalid, 491 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 53 mSolverCounterUnsat, 266 mSDtfsCounter, 438 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 336 GetRequests, 204 SyntacticMatches, 4 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 374 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=78occurred in iteration=10, InterpolantAutomatonStates: 106, 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, 14 MinimizatonAttempts, 228 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 36 NumberOfFragments, 76 HoareAnnotationTreeSize, 6 FomulaSimplifications, 1175 FormulaSimplificationTreeSizeReduction, 0.3s HoareSimplificationTime, 6 FomulaSimplificationsInter, 2267 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.7s InterpolantComputationTime, 372 NumberOfCodeBlocks, 336 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 430 ConstructedInterpolants, 0 QuantifiedInterpolants, 1108 SizeOfPredicates, 20 NumberOfNonLiveVariables, 623 ConjunctsInSsa, 38 ConjunctsInUnsatCore, 26 InterpolantComputations, 10 PerfectInterpolantSequences, 146/278 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold - InvariantResult [Line: 513]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 541]: Loop Invariant Derived loop invariant: (((((1 <= i && 1 <= length1) && 1 <= length2) && length1 <= 2147483647) && 1 <= i) && length2 <= 2147483647) || (((((1 <= i && i == 0) && 1 <= length1) && 1 <= length2) && length1 <= 2147483647) && length2 <= 2147483647) - InvariantResult [Line: 525]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 518]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 519]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 537]: Loop Invariant Derived loop invariant: ((((i == 0 && 1 <= length1) && 1 <= length2) && length1 <= 2147483647) && length2 <= 2147483647) || ((((1 <= i && 1 <= length1) && 1 <= length2) && length1 <= 2147483647) && length2 <= 2147483647) RESULT: Ultimate proved your program to be correct! [2022-11-20 11:18:17,553 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b57c6909-be31-4288-98dc-65bee520b017/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 Result: TRUE