./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-acceleration/diamond_1-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8d575c-5a30-4f9b-9642-f43bb48e5fb0/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8d575c-5a30-4f9b-9642-f43bb48e5fb0/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8d575c-5a30-4f9b-9642-f43bb48e5fb0/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8d575c-5a30-4f9b-9642-f43bb48e5fb0/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-acceleration/diamond_1-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8d575c-5a30-4f9b-9642-f43bb48e5fb0/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8d575c-5a30-4f9b-9642-f43bb48e5fb0/bin/utaipan-Q6hlc19bkW --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 278330930f6296a6ef523f9a21bb3281878247b5e50b78eb9077d2b7690716c4 --- 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-4e7fbc6 [2022-11-23 15:16:43,949 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 15:16:43,951 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 15:16:43,975 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 15:16:43,976 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 15:16:43,977 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 15:16:43,979 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 15:16:43,981 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 15:16:43,983 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 15:16:43,985 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 15:16:43,986 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 15:16:43,988 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 15:16:43,988 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 15:16:43,990 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 15:16:43,991 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 15:16:43,993 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 15:16:43,994 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 15:16:43,995 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 15:16:43,997 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 15:16:44,000 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 15:16:44,002 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 15:16:44,003 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 15:16:44,005 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 15:16:44,006 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 15:16:44,010 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 15:16:44,011 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 15:16:44,011 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 15:16:44,012 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 15:16:44,013 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 15:16:44,014 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 15:16:44,014 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 15:16:44,015 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 15:16:44,017 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 15:16:44,018 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 15:16:44,019 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 15:16:44,019 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 15:16:44,020 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 15:16:44,021 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 15:16:44,021 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 15:16:44,023 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 15:16:44,024 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 15:16:44,025 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8d575c-5a30-4f9b-9642-f43bb48e5fb0/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-23 15:16:44,071 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 15:16:44,079 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 15:16:44,080 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 15:16:44,080 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 15:16:44,081 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 15:16:44,081 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 15:16:44,081 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 15:16:44,082 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 15:16:44,082 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 15:16:44,082 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 15:16:44,083 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 15:16:44,084 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 15:16:44,084 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 15:16:44,084 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 15:16:44,084 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 15:16:44,085 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 15:16:44,085 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 15:16:44,085 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 15:16:44,086 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 15:16:44,086 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 15:16:44,086 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 15:16:44,087 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 15:16:44,087 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 15:16:44,087 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 15:16:44,087 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 15:16:44,088 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 15:16:44,088 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 15:16:44,088 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 15:16:44,088 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 15:16:44,088 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 15:16:44,089 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 15:16:44,089 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 15:16:44,089 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:16:44,090 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 15:16:44,090 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 15:16:44,091 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 15:16:44,091 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 15:16:44,092 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 15:16:44,092 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 15:16:44,092 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 15:16:44,092 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 15:16:44,092 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_6a8d575c-5a30-4f9b-9642-f43bb48e5fb0/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8d575c-5a30-4f9b-9642-f43bb48e5fb0/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 278330930f6296a6ef523f9a21bb3281878247b5e50b78eb9077d2b7690716c4 [2022-11-23 15:16:44,451 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 15:16:44,494 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 15:16:44,497 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 15:16:44,499 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 15:16:44,500 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 15:16:44,502 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8d575c-5a30-4f9b-9642-f43bb48e5fb0/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/loop-acceleration/diamond_1-2.c [2022-11-23 15:16:48,211 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 15:16:48,597 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 15:16:48,598 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8d575c-5a30-4f9b-9642-f43bb48e5fb0/sv-benchmarks/c/loop-acceleration/diamond_1-2.c [2022-11-23 15:16:48,607 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8d575c-5a30-4f9b-9642-f43bb48e5fb0/bin/utaipan-Q6hlc19bkW/data/f57bbfdc0/37b5c77fec4d4b15be7654d19c0d02ad/FLAGa4493ea20 [2022-11-23 15:16:48,637 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8d575c-5a30-4f9b-9642-f43bb48e5fb0/bin/utaipan-Q6hlc19bkW/data/f57bbfdc0/37b5c77fec4d4b15be7654d19c0d02ad [2022-11-23 15:16:48,641 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 15:16:48,643 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 15:16:48,645 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 15:16:48,645 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 15:16:48,659 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 15:16:48,660 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:16:48" (1/1) ... [2022-11-23 15:16:48,662 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74111981 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:16:48, skipping insertion in model container [2022-11-23 15:16:48,662 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:16:48" (1/1) ... [2022-11-23 15:16:48,673 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 15:16:48,691 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 15:16:48,929 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8d575c-5a30-4f9b-9642-f43bb48e5fb0/sv-benchmarks/c/loop-acceleration/diamond_1-2.c[373,386] [2022-11-23 15:16:48,946 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:16:48,959 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 15:16:48,974 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8d575c-5a30-4f9b-9642-f43bb48e5fb0/sv-benchmarks/c/loop-acceleration/diamond_1-2.c[373,386] [2022-11-23 15:16:48,977 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:16:48,993 INFO L208 MainTranslator]: Completed translation [2022-11-23 15:16:48,994 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:16:48 WrapperNode [2022-11-23 15:16:48,994 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 15:16:48,995 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 15:16:48,996 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 15:16:48,996 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 15:16:49,005 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:16:48" (1/1) ... [2022-11-23 15:16:49,012 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:16:48" (1/1) ... [2022-11-23 15:16:49,037 INFO L138 Inliner]: procedures = 13, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 29 [2022-11-23 15:16:49,038 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 15:16:49,039 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 15:16:49,040 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 15:16:49,040 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 15:16:49,052 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:16:48" (1/1) ... [2022-11-23 15:16:49,052 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:16:48" (1/1) ... [2022-11-23 15:16:49,053 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:16:48" (1/1) ... [2022-11-23 15:16:49,065 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:16:48" (1/1) ... [2022-11-23 15:16:49,068 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:16:48" (1/1) ... [2022-11-23 15:16:49,072 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:16:48" (1/1) ... [2022-11-23 15:16:49,075 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:16:48" (1/1) ... [2022-11-23 15:16:49,076 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:16:48" (1/1) ... [2022-11-23 15:16:49,077 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 15:16:49,078 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 15:16:49,078 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 15:16:49,079 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 15:16:49,079 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:16:48" (1/1) ... [2022-11-23 15:16:49,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:16:49,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8d575c-5a30-4f9b-9642-f43bb48e5fb0/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:16:49,117 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8d575c-5a30-4f9b-9642-f43bb48e5fb0/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 15:16:49,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8d575c-5a30-4f9b-9642-f43bb48e5fb0/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 15:16:49,164 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 15:16:49,164 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 15:16:49,164 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 15:16:49,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 15:16:49,254 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 15:16:49,256 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 15:16:49,385 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 15:16:49,428 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 15:16:49,429 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-23 15:16:49,432 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:16:49 BoogieIcfgContainer [2022-11-23 15:16:49,432 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 15:16:49,436 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 15:16:49,436 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 15:16:49,440 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 15:16:49,440 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:16:48" (1/3) ... [2022-11-23 15:16:49,441 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e21889c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:16:49, skipping insertion in model container [2022-11-23 15:16:49,441 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:16:48" (2/3) ... [2022-11-23 15:16:49,442 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e21889c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:16:49, skipping insertion in model container [2022-11-23 15:16:49,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:16:49" (3/3) ... [2022-11-23 15:16:49,444 INFO L112 eAbstractionObserver]: Analyzing ICFG diamond_1-2.c [2022-11-23 15:16:49,469 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 15:16:49,470 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 15:16:49,538 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 15:16:49,547 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=FINITE_AUTOMATA, 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;@6ac7eb9a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 15:16:49,547 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 15:16:49,553 INFO L276 IsEmpty]: Start isEmpty. Operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 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) [2022-11-23 15:16:49,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-23 15:16:49,561 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:16:49,562 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-23 15:16:49,563 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:16:49,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:16:49,570 INFO L85 PathProgramCache]: Analyzing trace with hash 2066920, now seen corresponding path program 1 times [2022-11-23 15:16:49,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:16:49,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853512513] [2022-11-23 15:16:49,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:16:49,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:16:49,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:16:50,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:16:50,009 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:16:50,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853512513] [2022-11-23 15:16:50,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853512513] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:16:50,012 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:16:50,012 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 15:16:50,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247452879] [2022-11-23 15:16:50,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:16:50,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:16:50,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:16:50,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:16:50,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:16:50,082 INFO L87 Difference]: Start difference. First operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 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) Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 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) [2022-11-23 15:16:50,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:16:50,145 INFO L93 Difference]: Finished difference Result 13 states and 15 transitions. [2022-11-23 15:16:50,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:16:50,152 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 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 4 [2022-11-23 15:16:50,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:16:50,162 INFO L225 Difference]: With dead ends: 13 [2022-11-23 15:16:50,162 INFO L226 Difference]: Without dead ends: 6 [2022-11-23 15:16:50,166 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 [2022-11-23 15:16:50,173 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 15:16:50,176 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 15:16:50,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2022-11-23 15:16:50,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2022-11-23 15:16:50,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:16:50,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2022-11-23 15:16:50,218 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 4 [2022-11-23 15:16:50,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:16:50,219 INFO L495 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2022-11-23 15:16:50,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 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) [2022-11-23 15:16:50,219 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2022-11-23 15:16:50,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-23 15:16:50,220 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:16:50,220 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-23 15:16:50,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 15:16:50,221 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:16:50,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:16:50,223 INFO L85 PathProgramCache]: Analyzing trace with hash 64032200, now seen corresponding path program 1 times [2022-11-23 15:16:50,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:16:50,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281991227] [2022-11-23 15:16:50,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:16:50,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:16:50,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:16:50,450 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:16:50,451 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:16:50,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281991227] [2022-11-23 15:16:50,452 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281991227] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:16:50,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1315029874] [2022-11-23 15:16:50,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:16:50,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:16:50,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8d575c-5a30-4f9b-9642-f43bb48e5fb0/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:16:50,458 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8d575c-5a30-4f9b-9642-f43bb48e5fb0/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:16:50,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8d575c-5a30-4f9b-9642-f43bb48e5fb0/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 15:16:50,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:16:50,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 15:16:50,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:16:50,890 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:16:50,890 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:16:51,175 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:16:51,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1315029874] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:16:51,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1128474981] [2022-11-23 15:16:51,219 INFO L159 IcfgInterpreter]: Started Sifa with 5 locations of interest [2022-11-23 15:16:51,219 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:16:51,224 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:16:51,232 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:16:51,234 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:16:51,633 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:16:52,068 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '69#(and (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= (mod (mod |ULTIMATE.start_main_~y~0#1| 2) 4294967296) (mod (mod |ULTIMATE.start_main_~x~0#1| 2) 4294967296)) 1 0)) (<= 0 |ULTIMATE.start_main_~x~0#1|) (not (< (mod |ULTIMATE.start_main_~x~0#1| 4294967296) 99)) (<= |#NULL.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-23 15:16:52,068 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 15:16:52,068 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:16:52,069 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-11-23 15:16:52,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257340369] [2022-11-23 15:16:52,070 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 15:16:52,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 15:16:52,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:16:52,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 15:16:52,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-23 15:16:52,072 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. Second operand has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:16:52,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:16:52,217 INFO L93 Difference]: Finished difference Result 12 states and 14 transitions. [2022-11-23 15:16:52,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 15:16:52,219 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-23 15:16:52,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:16:52,219 INFO L225 Difference]: With dead ends: 12 [2022-11-23 15:16:52,220 INFO L226 Difference]: Without dead ends: 9 [2022-11-23 15:16:52,220 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-11-23 15:16:52,222 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 15:16:52,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 10 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 15:16:52,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2022-11-23 15:16:52,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2022-11-23 15:16:52,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:16:52,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-11-23 15:16:52,228 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2022-11-23 15:16:52,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:16:52,228 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-11-23 15:16:52,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:16:52,229 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-11-23 15:16:52,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-23 15:16:52,229 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:16:52,229 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1] [2022-11-23 15:16:52,236 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8d575c-5a30-4f9b-9642-f43bb48e5fb0/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 15:16:52,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8d575c-5a30-4f9b-9642-f43bb48e5fb0/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:16:52,437 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:16:52,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:16:52,438 INFO L85 PathProgramCache]: Analyzing trace with hash 575767016, now seen corresponding path program 2 times [2022-11-23 15:16:52,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:16:52,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641578259] [2022-11-23 15:16:52,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:16:52,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:16:52,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:16:53,133 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:16:53,135 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:16:53,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641578259] [2022-11-23 15:16:53,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641578259] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:16:53,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [630676771] [2022-11-23 15:16:53,142 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 15:16:53,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:16:53,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8d575c-5a30-4f9b-9642-f43bb48e5fb0/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:16:53,144 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8d575c-5a30-4f9b-9642-f43bb48e5fb0/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:16:53,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8d575c-5a30-4f9b-9642-f43bb48e5fb0/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 15:16:53,221 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-23 15:16:53,222 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 15:16:53,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-23 15:16:53,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:16:53,634 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:16:53,635 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:16:54,241 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:16:54,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [630676771] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:16:54,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [483007778] [2022-11-23 15:16:54,244 INFO L159 IcfgInterpreter]: Started Sifa with 5 locations of interest [2022-11-23 15:16:54,244 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:16:54,244 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:16:54,244 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:16:54,245 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:16:54,380 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:16:54,764 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '160#(and (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= (mod (mod |ULTIMATE.start_main_~y~0#1| 2) 4294967296) (mod (mod |ULTIMATE.start_main_~x~0#1| 2) 4294967296)) 1 0)) (<= 0 |ULTIMATE.start_main_~x~0#1|) (not (< (mod |ULTIMATE.start_main_~x~0#1| 4294967296) 99)) (<= |#NULL.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-23 15:16:54,765 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 15:16:54,765 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:16:54,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-11-23 15:16:54,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896714248] [2022-11-23 15:16:54,766 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 15:16:54,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-23 15:16:54,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:16:54,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-23 15:16:54,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2022-11-23 15:16:54,768 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 13 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 12 states have internal predecessors, (16), 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) [2022-11-23 15:17:00,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:17:00,233 INFO L93 Difference]: Finished difference Result 18 states and 23 transitions. [2022-11-23 15:17:00,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-23 15:17:00,234 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 12 states have internal predecessors, (16), 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 [2022-11-23 15:17:00,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:17:00,235 INFO L225 Difference]: With dead ends: 18 [2022-11-23 15:17:00,235 INFO L226 Difference]: Without dead ends: 15 [2022-11-23 15:17:00,236 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 11 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=119, Invalid=261, Unknown=0, NotChecked=0, Total=380 [2022-11-23 15:17:00,237 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:17:00,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 14 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:17:00,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-11-23 15:17:00,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-11-23 15:17:00,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:17:00,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2022-11-23 15:17:00,245 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 8 [2022-11-23 15:17:00,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:17:00,246 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2022-11-23 15:17:00,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 12 states have internal predecessors, (16), 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) [2022-11-23 15:17:00,246 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2022-11-23 15:17:00,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-23 15:17:00,247 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:17:00,247 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1] [2022-11-23 15:17:00,259 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8d575c-5a30-4f9b-9642-f43bb48e5fb0/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 15:17:00,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8d575c-5a30-4f9b-9642-f43bb48e5fb0/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:17:00,460 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:17:00,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:17:00,461 INFO L85 PathProgramCache]: Analyzing trace with hash -692324888, now seen corresponding path program 3 times [2022-11-23 15:17:00,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:17:00,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947397926] [2022-11-23 15:17:00,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:17:00,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:17:00,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:17:01,695 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:17:01,695 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:17:01,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947397926] [2022-11-23 15:17:01,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947397926] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:17:01,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [606141511] [2022-11-23 15:17:01,696 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-23 15:17:01,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:17:01,696 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8d575c-5a30-4f9b-9642-f43bb48e5fb0/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:17:01,700 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8d575c-5a30-4f9b-9642-f43bb48e5fb0/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:17:01,709 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8d575c-5a30-4f9b-9642-f43bb48e5fb0/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 15:17:01,766 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-23 15:17:01,766 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 15:17:01,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-23 15:17:01,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:17:02,680 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:17:02,681 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:17:04,393 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:17:04,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [606141511] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:17:04,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [535890067] [2022-11-23 15:17:04,396 INFO L159 IcfgInterpreter]: Started Sifa with 5 locations of interest [2022-11-23 15:17:04,396 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:17:04,397 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:17:04,397 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:17:04,397 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:17:04,527 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:17:04,993 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '329#(and (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= (mod (mod |ULTIMATE.start_main_~y~0#1| 2) 4294967296) (mod (mod |ULTIMATE.start_main_~x~0#1| 2) 4294967296)) 1 0)) (<= 0 |ULTIMATE.start_main_~x~0#1|) (not (< (mod |ULTIMATE.start_main_~x~0#1| 4294967296) 99)) (<= |#NULL.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-23 15:17:04,993 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 15:17:04,993 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:17:04,993 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2022-11-23 15:17:04,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178431902] [2022-11-23 15:17:04,994 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 15:17:04,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-23 15:17:04,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:17:04,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-23 15:17:04,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=557, Unknown=0, NotChecked=0, Total=756 [2022-11-23 15:17:04,996 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 25 states, 25 states have (on average 1.12) internal successors, (28), 24 states have internal predecessors, (28), 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) [2022-11-23 15:17:16,181 WARN L233 SmtUtils]: Spent 5.04s on a formula simplification. DAG size of input: 129 DAG size of output: 27 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:17:48,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:17:48,159 INFO L93 Difference]: Finished difference Result 30 states and 41 transitions. [2022-11-23 15:17:48,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-23 15:17:48,161 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.12) internal successors, (28), 24 states have internal predecessors, (28), 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 [2022-11-23 15:17:48,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:17:48,162 INFO L225 Difference]: With dead ends: 30 [2022-11-23 15:17:48,162 INFO L226 Difference]: Without dead ends: 27 [2022-11-23 15:17:48,163 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 17 SyntacticMatches, 9 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 44.9s TimeCoverageRelationStatistics Valid=447, Invalid=957, Unknown=2, NotChecked=0, Total=1406 [2022-11-23 15:17:48,164 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 15:17:48,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 15:17:48,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-11-23 15:17:48,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-11-23 15:17:48,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.0384615384615385) internal successors, (27), 26 states have internal predecessors, (27), 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) [2022-11-23 15:17:48,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2022-11-23 15:17:48,181 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 14 [2022-11-23 15:17:48,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:17:48,181 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2022-11-23 15:17:48,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.12) internal successors, (28), 24 states have internal predecessors, (28), 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) [2022-11-23 15:17:48,182 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2022-11-23 15:17:48,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-23 15:17:48,183 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:17:48,183 INFO L195 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1] [2022-11-23 15:17:48,196 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8d575c-5a30-4f9b-9642-f43bb48e5fb0/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-23 15:17:48,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8d575c-5a30-4f9b-9642-f43bb48e5fb0/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-11-23 15:17:48,390 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:17:48,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:17:48,391 INFO L85 PathProgramCache]: Analyzing trace with hash 719052264, now seen corresponding path program 4 times [2022-11-23 15:17:48,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:17:48,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966785832] [2022-11-23 15:17:48,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:17:48,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:17:48,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:17:52,052 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:17:52,052 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:17:52,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966785832] [2022-11-23 15:17:52,053 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966785832] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:17:52,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1511069053] [2022-11-23 15:17:52,053 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-23 15:17:52,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:17:52,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8d575c-5a30-4f9b-9642-f43bb48e5fb0/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:17:52,055 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8d575c-5a30-4f9b-9642-f43bb48e5fb0/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:17:52,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8d575c-5a30-4f9b-9642-f43bb48e5fb0/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-23 15:17:52,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:17:52,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-23 15:17:52,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:17:54,895 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:17:54,895 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:18:01,538 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:18:01,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1511069053] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:18:01,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [213959632] [2022-11-23 15:18:01,540 INFO L159 IcfgInterpreter]: Started Sifa with 5 locations of interest [2022-11-23 15:18:01,541 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:18:01,541 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:18:01,541 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:18:01,541 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:18:01,651 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:18:02,431 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '654#(and (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= (mod (mod |ULTIMATE.start_main_~y~0#1| 2) 4294967296) (mod (mod |ULTIMATE.start_main_~x~0#1| 2) 4294967296)) 1 0)) (<= 0 |ULTIMATE.start_main_~x~0#1|) (not (< (mod |ULTIMATE.start_main_~x~0#1| 4294967296) 99)) (<= |#NULL.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-23 15:18:02,431 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 15:18:02,431 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:18:02,431 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 48 [2022-11-23 15:18:02,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569720741] [2022-11-23 15:18:02,431 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 15:18:02,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-11-23 15:18:02,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:18:02,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-11-23 15:18:02,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=679, Invalid=1973, Unknown=0, NotChecked=0, Total=2652 [2022-11-23 15:18:02,436 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand has 49 states, 49 states have (on average 1.0612244897959184) internal successors, (52), 48 states have internal predecessors, (52), 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) [2022-11-23 15:18:32,663 WARN L233 SmtUtils]: Spent 26.14s on a formula simplification. DAG size of input: 286 DAG size of output: 13 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:19:09,481 WARN L233 SmtUtils]: Spent 28.18s on a formula simplification. DAG size of input: 279 DAG size of output: 27 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:19:44,774 WARN L233 SmtUtils]: Spent 21.75s on a formula simplification. DAG size of input: 263 DAG size of output: 27 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:20:13,471 WARN L233 SmtUtils]: Spent 16.83s on a formula simplification. DAG size of input: 254 DAG size of output: 27 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:20:33,342 WARN L233 SmtUtils]: Spent 7.66s on a formula simplification. DAG size of input: 238 DAG size of output: 27 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:20:55,503 WARN L233 SmtUtils]: Spent 7.81s on a formula simplification. DAG size of input: 229 DAG size of output: 27 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:21:14,291 WARN L233 SmtUtils]: Spent 5.81s on a formula simplification. DAG size of input: 213 DAG size of output: 27 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:21:39,401 WARN L233 SmtUtils]: Spent 6.03s on a formula simplification. DAG size of input: 204 DAG size of output: 27 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:24:37,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:24:37,945 INFO L93 Difference]: Finished difference Result 54 states and 77 transitions. [2022-11-23 15:24:37,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-23 15:24:37,946 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.0612244897959184) internal successors, (52), 48 states have internal predecessors, (52), 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 26 [2022-11-23 15:24:37,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:24:37,947 INFO L225 Difference]: With dead ends: 54 [2022-11-23 15:24:37,947 INFO L226 Difference]: Without dead ends: 51 [2022-11-23 15:24:37,950 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 29 SyntacticMatches, 21 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 477 ImplicationChecksByTransitivity, 403.2s TimeCoverageRelationStatistics Valid=1717, Invalid=3643, Unknown=42, NotChecked=0, Total=5402 [2022-11-23 15:24:37,950 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 608 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 608 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-23 15:24:37,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 50 Invalid, 633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 608 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-23 15:24:37,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-11-23 15:24:37,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2022-11-23 15:24:37,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.02) internal successors, (51), 50 states have internal predecessors, (51), 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) [2022-11-23 15:24:37,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2022-11-23 15:24:37,972 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 26 [2022-11-23 15:24:37,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:24:37,972 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2022-11-23 15:24:37,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.0612244897959184) internal successors, (52), 48 states have internal predecessors, (52), 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) [2022-11-23 15:24:37,973 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2022-11-23 15:24:37,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-23 15:24:37,974 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:24:37,974 INFO L195 NwaCegarLoop]: trace histogram [46, 1, 1, 1, 1] [2022-11-23 15:24:37,995 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8d575c-5a30-4f9b-9642-f43bb48e5fb0/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-23 15:24:38,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8d575c-5a30-4f9b-9642-f43bb48e5fb0/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:24:38,196 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:24:38,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:24:38,196 INFO L85 PathProgramCache]: Analyzing trace with hash 1934077416, now seen corresponding path program 5 times [2022-11-23 15:24:38,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:24:38,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624199347] [2022-11-23 15:24:38,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:24:38,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:24:38,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:24:46,848 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:24:46,849 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:24:46,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624199347] [2022-11-23 15:24:46,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624199347] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:24:46,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1280642912] [2022-11-23 15:24:46,849 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 15:24:46,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:24:46,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8d575c-5a30-4f9b-9642-f43bb48e5fb0/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:24:46,855 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8d575c-5a30-4f9b-9642-f43bb48e5fb0/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:24:46,857 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8d575c-5a30-4f9b-9642-f43bb48e5fb0/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-23 15:24:49,215 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s) [2022-11-23 15:24:49,215 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 15:24:49,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 55 conjunts are in the unsatisfiable core [2022-11-23 15:24:49,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:24:55,094 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:24:55,094 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:25:19,343 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:25:19,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1280642912] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:25:19,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1505114429] [2022-11-23 15:25:19,345 INFO L159 IcfgInterpreter]: Started Sifa with 5 locations of interest [2022-11-23 15:25:19,346 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:25:19,346 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:25:19,347 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:25:19,347 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:25:19,428 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:25:20,958 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1292#(and (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= (mod (mod |ULTIMATE.start_main_~y~0#1| 2) 4294967296) (mod (mod |ULTIMATE.start_main_~x~0#1| 2) 4294967296)) 1 0)) (<= 0 |ULTIMATE.start_main_~x~0#1|) (not (< (mod |ULTIMATE.start_main_~x~0#1| 4294967296) 99)) (<= |#NULL.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-23 15:25:20,958 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 15:25:20,958 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:25:20,958 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 49] total 97 [2022-11-23 15:25:20,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464336386] [2022-11-23 15:25:20,958 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 15:25:20,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2022-11-23 15:25:20,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:25:20,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2022-11-23 15:25:20,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1516, Invalid=8584, Unknown=0, NotChecked=0, Total=10100 [2022-11-23 15:25:20,963 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand has 98 states, 98 states have (on average 1.030612244897959) internal successors, (101), 97 states have internal predecessors, (101), 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) [2022-11-23 15:25:32,738 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-23 15:25:35,659 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse28 (+ |c_ULTIMATE.start_main_~x~0#1| 1)) (.cse4 (mod (mod |c_ULTIMATE.start_main_~y~0#1| 2) 4294967296)) (.cse5 (- |c_ULTIMATE.start_main_~x~0#1|)) (.cse6 (* (div |c_ULTIMATE.start_main_~x~0#1| 2) 2))) (let ((.cse2 (< (+ 4294967291 (* (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 95)) 4294967296) 4294967296)) |c_ULTIMATE.start_main_~x~0#1|)) (.cse11 (< (+ (* 4294967296 (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 81)) 4294967296)) 4294967277) |c_ULTIMATE.start_main_~x~0#1|)) (.cse7 (< (+ 4294967269 (* (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 73)) 4294967296) 4294967296)) |c_ULTIMATE.start_main_~x~0#1|)) (.cse10 (< (+ 4294967267 (* 4294967296 (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 71)) 4294967296))) |c_ULTIMATE.start_main_~x~0#1|)) (.cse13 (< (+ 4294967285 (* (div (+ (- 89) |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 4294967296)) |c_ULTIMATE.start_main_~x~0#1|)) (.cse18 (< (+ 4294967259 (* (div (+ (- 63) |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 4294967296)) |c_ULTIMATE.start_main_~x~0#1|)) (.cse20 (< (+ (* (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 85)) 4294967296) 4294967296) 4294967281) |c_ULTIMATE.start_main_~x~0#1|)) (.cse3 (< (+ (* (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 97)) 4294967296) 4294967296) 4294967293) |c_ULTIMATE.start_main_~x~0#1|)) (.cse16 (< (+ (* (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 59)) 4294967296) 4294967296) 4294967255) |c_ULTIMATE.start_main_~x~0#1|)) (.cse14 (< (+ (* (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 61)) 4294967296) 4294967296) 4294967257) |c_ULTIMATE.start_main_~x~0#1|)) (.cse23 (< (+ 4294967279 (* (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 83)) 4294967296) 4294967296)) |c_ULTIMATE.start_main_~x~0#1|)) (.cse9 (< (+ 4294967273 (* (div (+ (- 77) |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 4294967296)) |c_ULTIMATE.start_main_~x~0#1|)) (.cse24 (< (+ 4294967263 (* (div (+ (- 67) |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 4294967296)) |c_ULTIMATE.start_main_~x~0#1|)) (.cse19 (< (+ 4294967253 (* (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 57)) 4294967296) 4294967296)) |c_ULTIMATE.start_main_~x~0#1|)) (.cse21 (< (+ 4294967271 (* (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 75)) 4294967296) 4294967296)) |c_ULTIMATE.start_main_~x~0#1|)) (.cse12 (< (+ (* (div (+ (- 69) |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 4294967296) 4294967265) |c_ULTIMATE.start_main_~x~0#1|)) (.cse22 (< (+ 4294967275 (* (div (+ (- 79) |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 4294967296)) |c_ULTIMATE.start_main_~x~0#1|)) (.cse25 (< (+ 4294967251 (* (div (+ (- 55) |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 4294967296)) |c_ULTIMATE.start_main_~x~0#1|)) (.cse17 (< (+ 4294967283 (* (div (+ (- 87) |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 4294967296)) |c_ULTIMATE.start_main_~x~0#1|)) (.cse27 (< (+ 4294967261 (* (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 65)) 4294967296) 4294967296)) |c_ULTIMATE.start_main_~x~0#1|)) (.cse15 (< (+ 4294967289 (* (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 93)) 4294967296) 4294967296)) |c_ULTIMATE.start_main_~x~0#1|)) (.cse8 (< |c_ULTIMATE.start_main_~x~0#1| (+ .cse4 (* 4294967296 (div (+ .cse5 1 .cse6) 4294967296)) 1 .cse6))) (.cse26 (< (+ (* (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 91)) 4294967296) 4294967296) 4294967287) |c_ULTIMATE.start_main_~x~0#1|)) (.cse0 (< |c_ULTIMATE.start_main_~x~0#1| (let ((.cse29 (* 2 (div .cse28 2)))) (+ .cse4 (* (div (+ .cse5 .cse29) 4294967296) 4294967296) .cse29)))) (.cse1 (< (+ .cse4 .cse6) .cse28))) (and (or (< (+ (* (div (+ (- 88) |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 4294967296) 4294967284) |c_ULTIMATE.start_main_~x~0#1|) .cse0) (or (< (+ (* (div (+ (- 13) |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 4294967296) 4294967209) |c_ULTIMATE.start_main_~x~0#1|) .cse1) (or .cse2 .cse1) (or (< (+ 4294967274 (* (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 78)) 4294967296) 4294967296)) |c_ULTIMATE.start_main_~x~0#1|) .cse0) (or (< (+ (* (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 31)) 4294967296) 4294967296) 4294967227) |c_ULTIMATE.start_main_~x~0#1|) .cse1) (or (< (+ 4294967239 (* 4294967296 (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 43)) 4294967296))) |c_ULTIMATE.start_main_~x~0#1|) .cse1) (or .cse3 (< |c_ULTIMATE.start_main_~x~0#1| (+ .cse4 (* (div (+ .cse5 (- 4294967295) .cse6) 4294967296) 4294967296) 4294967297 .cse6))) (or .cse7 .cse1) (or (< (+ 4294967282 (* (div (+ (- 86) |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 4294967296)) |c_ULTIMATE.start_main_~x~0#1|) .cse0) (or .cse8 .cse9) (or (< (+ (* (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 82)) 4294967296) 4294967296) 4294967278) |c_ULTIMATE.start_main_~x~0#1|) .cse0) (or .cse8 .cse10) (or (< (+ 4294967292 (* (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 96)) 4294967296) 4294967296)) |c_ULTIMATE.start_main_~x~0#1|) .cse0) (or (< (+ (* (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 41)) 4294967296) 4294967296) 4294967237) |c_ULTIMATE.start_main_~x~0#1|) .cse1) (or (< (+ (* (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 98)) 4294967296) 4294967296) 4294967294) |c_ULTIMATE.start_main_~x~0#1|) (< |c_ULTIMATE.start_main_~x~0#1| (+ .cse4 (* (div (+ .cse5 (* 2 (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 4294967295)) 2))) 4294967296) 4294967296) (* 2 (div (+ (- 1) |c_ULTIMATE.start_main_~x~0#1|) 2)) 4294967298))) (or (< (+ 4294967217 (* (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 21)) 4294967296) 4294967296)) |c_ULTIMATE.start_main_~x~0#1|) .cse1) (or .cse11 .cse1) (or .cse8 .cse2) (or .cse8 .cse11) (or (< (+ (* (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 49)) 4294967296) 4294967296) 4294967245) |c_ULTIMATE.start_main_~x~0#1|) .cse1) (or .cse8 .cse7) (or (< (+ (* (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 33)) 4294967296) 4294967296) 4294967229) |c_ULTIMATE.start_main_~x~0#1|) .cse1) (or (< (+ (* (div (+ (- 51) |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 4294967296) 4294967247) |c_ULTIMATE.start_main_~x~0#1|) .cse1) (or (< (+ 4294967254 (* (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 58)) 4294967296) 4294967296)) |c_ULTIMATE.start_main_~x~0#1|) .cse0) (or .cse12 .cse1) (or (< (+ 4294967264 (* (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 68)) 4294967296) 4294967296)) |c_ULTIMATE.start_main_~x~0#1|) .cse0) (or .cse8 .cse13) (or .cse8 .cse14) (or (< (+ (* (div (+ (- 11) |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 4294967296) 4294967207) |c_ULTIMATE.start_main_~x~0#1|) .cse1) (or .cse10 .cse1) (or (< (+ (* 4294967296 (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 39)) 4294967296)) 4294967235) |c_ULTIMATE.start_main_~x~0#1|) .cse1) (or (< (+ 4294967250 (* (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 54)) 4294967296) 4294967296)) |c_ULTIMATE.start_main_~x~0#1|) .cse0) (or .cse13 .cse1) (or .cse15 .cse1) (or (< (+ (* (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 60)) 4294967296) 4294967296) 4294967256) |c_ULTIMATE.start_main_~x~0#1|) .cse0) (or .cse8 .cse16) (or (< (+ 4294967260 (* (div (+ (- 64) |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 4294967296)) |c_ULTIMATE.start_main_~x~0#1|) .cse0) (or .cse8 .cse17) (or .cse18 .cse1) (or .cse19 .cse1) (or .cse20 .cse1) (or .cse8 .cse18) (or .cse8 .cse20) (or .cse3 .cse1) (or (< (+ 4294967262 (* 4294967296 (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 66)) 4294967296))) |c_ULTIMATE.start_main_~x~0#1|) .cse0) (or (< (+ (* (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 27)) 4294967296) 4294967296) 4294967223) |c_ULTIMATE.start_main_~x~0#1|) .cse1) (or (< (+ 4294967286 (* (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 90)) 4294967296) 4294967296)) |c_ULTIMATE.start_main_~x~0#1|) .cse0) (or .cse8 .cse21) (or .cse22 .cse1) (or .cse16 .cse1) (or (< (+ (* (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 56)) 4294967296) 4294967296) 4294967252) |c_ULTIMATE.start_main_~x~0#1|) .cse0) (or (< (+ 4294967231 (* (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 35)) 4294967296) 4294967296)) |c_ULTIMATE.start_main_~x~0#1|) .cse1) (or .cse14 .cse1) (or (< (+ 4294967213 (* (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 17)) 4294967296) 4294967296)) |c_ULTIMATE.start_main_~x~0#1|) .cse1) (or .cse23 .cse1) (or .cse8 .cse23) (or (< (+ (* (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 84)) 4294967296) 4294967296) 4294967280) |c_ULTIMATE.start_main_~x~0#1|) .cse0) (or .cse1 (< (+ (* 4294967296 (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 25)) 4294967296)) 4294967221) |c_ULTIMATE.start_main_~x~0#1|)) (or (< (mod |c_ULTIMATE.start_main_~x~0#1| 4294967296) 99) (= .cse4 (mod (mod |c_ULTIMATE.start_main_~x~0#1| 2) 4294967296))) (not (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| 0)) (or .cse9 .cse1) (or .cse8 .cse24) (or .cse1 .cse24) (or .cse8 .cse25) (or (< (+ (* (div (+ (- 53) |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 4294967296) 4294967249) |c_ULTIMATE.start_main_~x~0#1|) .cse1) (or (< (+ 4294967268 (* (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 72)) 4294967296) 4294967296)) |c_ULTIMATE.start_main_~x~0#1|) .cse0) (or (< (+ 4294967243 (* (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 47)) 4294967296) 4294967296)) |c_ULTIMATE.start_main_~x~0#1|) .cse1) (or .cse8 .cse19) (or .cse21 .cse1) (or (< (+ 4294967272 (* (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 76)) 4294967296) 4294967296)) |c_ULTIMATE.start_main_~x~0#1|) .cse0) (or .cse8 .cse12) (or .cse8 .cse22) (or .cse0 (< (+ (* (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 74)) 4294967296) 4294967296) 4294967270) |c_ULTIMATE.start_main_~x~0#1|)) (or .cse26 .cse1) (or (< (+ 4294967288 (* (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 92)) 4294967296) 4294967296)) |c_ULTIMATE.start_main_~x~0#1|) .cse0) (or .cse27 .cse1) (or .cse0 (< (+ 4294967266 (* (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 70)) 4294967296) 4294967296)) |c_ULTIMATE.start_main_~x~0#1|)) (or .cse1 .cse25) (or (< (+ (* (div (+ (- 9) |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 4294967296) 4294967205) |c_ULTIMATE.start_main_~x~0#1|) .cse1) (or (< (+ 4294967276 (* (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 80)) 4294967296) 4294967296)) |c_ULTIMATE.start_main_~x~0#1|) .cse0) (or .cse17 .cse1) (or (< (+ (* (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 37)) 4294967296) 4294967296) 4294967233) |c_ULTIMATE.start_main_~x~0#1|) .cse1) (or .cse0 (< (+ 4294967290 (* 4294967296 (div (+ (- 94) |c_ULTIMATE.start_main_~x~0#1|) 4294967296))) |c_ULTIMATE.start_main_~x~0#1|)) (or .cse8 .cse27) (or .cse8 .cse15) (or .cse8 .cse26) (or (< (+ 4294967225 (* (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 29)) 4294967296) 4294967296)) |c_ULTIMATE.start_main_~x~0#1|) .cse1) (or (< (+ (* (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 23)) 4294967296) 4294967296) 4294967219) |c_ULTIMATE.start_main_~x~0#1|) .cse1) (or (< (+ (* (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 19)) 4294967296) 4294967296) 4294967215) |c_ULTIMATE.start_main_~x~0#1|) .cse1) (or (< (+ (* (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 62)) 4294967296) 4294967296) 4294967258) |c_ULTIMATE.start_main_~x~0#1|) .cse0) (or (< (+ 4294967241 (* (div (+ (- 45) |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 4294967296)) |c_ULTIMATE.start_main_~x~0#1|) .cse1) (or (< (+ (* (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 15)) 4294967296) 4294967296) 4294967211) |c_ULTIMATE.start_main_~x~0#1|) .cse1)))) is different from false [2022-11-23 15:26:54,019 WARN L233 SmtUtils]: Spent 28.81s on a formula simplification. DAG size of input: 313 DAG size of output: 47 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:26:54,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:26:54,181 INFO L93 Difference]: Finished difference Result 60 states and 63 transitions. [2022-11-23 15:26:54,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-11-23 15:26:54,182 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 98 states have (on average 1.030612244897959) internal successors, (101), 97 states have internal predecessors, (101), 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 50 [2022-11-23 15:26:54,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:26:54,183 INFO L225 Difference]: With dead ends: 60 [2022-11-23 15:26:54,183 INFO L226 Difference]: Without dead ends: 55 [2022-11-23 15:26:54,186 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 52 SyntacticMatches, 45 SemanticMatches, 103 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1420 ImplicationChecksByTransitivity, 112.3s TimeCoverageRelationStatistics Valid=1650, Invalid=9057, Unknown=9, NotChecked=204, Total=10920 [2022-11-23 15:26:54,187 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 6 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 2379 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 2580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 2379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2022-11-23 15:26:54,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 101 Invalid, 2580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [201 Valid, 2379 Invalid, 0 Unknown, 0 Unchecked, 10.0s Time] [2022-11-23 15:26:54,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-11-23 15:26:54,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2022-11-23 15:26:54,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 1.0185185185185186) internal successors, (55), 54 states have internal predecessors, (55), 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) [2022-11-23 15:26:54,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 55 transitions. [2022-11-23 15:26:54,215 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 55 transitions. Word has length 50 [2022-11-23 15:26:54,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:26:54,216 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 55 transitions. [2022-11-23 15:26:54,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 98 states have (on average 1.030612244897959) internal successors, (101), 97 states have internal predecessors, (101), 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) [2022-11-23 15:26:54,216 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 55 transitions. [2022-11-23 15:26:54,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-23 15:26:54,218 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:26:54,218 INFO L195 NwaCegarLoop]: trace histogram [50, 1, 1, 1, 1] [2022-11-23 15:26:54,225 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8d575c-5a30-4f9b-9642-f43bb48e5fb0/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-23 15:26:54,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8d575c-5a30-4f9b-9642-f43bb48e5fb0/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:26:54,424 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:26:54,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:26:54,424 INFO L85 PathProgramCache]: Analyzing trace with hash -1127766552, now seen corresponding path program 6 times [2022-11-23 15:26:54,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:26:54,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894793991] [2022-11-23 15:26:54,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:26:54,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:26:54,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 15:26:54,522 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 15:26:54,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 15:26:54,664 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-23 15:26:54,664 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-23 15:26:54,666 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-23 15:26:54,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 15:26:54,673 INFO L444 BasicCegarLoop]: Path program histogram: [6, 1] [2022-11-23 15:26:54,677 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 15:26:54,765 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 03:26:54 BoogieIcfgContainer [2022-11-23 15:26:54,765 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 15:26:54,766 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 15:26:54,767 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 15:26:54,767 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 15:26:54,768 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:16:49" (3/4) ... [2022-11-23 15:26:54,770 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-23 15:26:54,863 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8d575c-5a30-4f9b-9642-f43bb48e5fb0/bin/utaipan-Q6hlc19bkW/witness.graphml [2022-11-23 15:26:54,863 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 15:26:54,864 INFO L158 Benchmark]: Toolchain (without parser) took 606221.38ms. Allocated memory was 157.3MB in the beginning and 297.8MB in the end (delta: 140.5MB). Free memory was 126.0MB in the beginning and 120.5MB in the end (delta: 5.4MB). Peak memory consumption was 148.9MB. Max. memory is 16.1GB. [2022-11-23 15:26:54,864 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 157.3MB. Free memory is still 97.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 15:26:54,865 INFO L158 Benchmark]: CACSL2BoogieTranslator took 349.95ms. Allocated memory is still 157.3MB. Free memory was 126.0MB in the beginning and 116.0MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-23 15:26:54,865 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.10ms. Allocated memory is still 157.3MB. Free memory was 116.0MB in the beginning and 114.7MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 15:26:54,866 INFO L158 Benchmark]: Boogie Preprocessor took 37.94ms. Allocated memory is still 157.3MB. Free memory was 114.7MB in the beginning and 113.7MB in the end (delta: 961.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 15:26:54,866 INFO L158 Benchmark]: RCFGBuilder took 354.08ms. Allocated memory is still 157.3MB. Free memory was 113.3MB in the beginning and 102.7MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-23 15:26:54,866 INFO L158 Benchmark]: TraceAbstraction took 605329.83ms. Allocated memory was 157.3MB in the beginning and 297.8MB in the end (delta: 140.5MB). Free memory was 101.8MB in the beginning and 125.8MB in the end (delta: -24.0MB). Peak memory consumption was 119.5MB. Max. memory is 16.1GB. [2022-11-23 15:26:54,867 INFO L158 Benchmark]: Witness Printer took 97.45ms. Allocated memory is still 297.8MB. Free memory was 125.8MB in the beginning and 120.5MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-23 15:26:54,870 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 157.3MB. Free memory is still 97.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 349.95ms. Allocated memory is still 157.3MB. Free memory was 126.0MB in the beginning and 116.0MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.10ms. Allocated memory is still 157.3MB. Free memory was 116.0MB in the beginning and 114.7MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 37.94ms. Allocated memory is still 157.3MB. Free memory was 114.7MB in the beginning and 113.7MB in the end (delta: 961.8kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 354.08ms. Allocated memory is still 157.3MB. Free memory was 113.3MB in the beginning and 102.7MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 605329.83ms. Allocated memory was 157.3MB in the beginning and 297.8MB in the end (delta: 140.5MB). Free memory was 101.8MB in the beginning and 125.8MB in the end (delta: -24.0MB). Peak memory consumption was 119.5MB. Max. memory is 16.1GB. * Witness Printer took 97.45ms. Allocated memory is still 297.8MB. Free memory was 125.8MB in the beginning and 120.5MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 8]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L14] unsigned int x = 0; [L15] unsigned int y = __VERIFIER_nondet_uint(); [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=2, x++=101, y=1] [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=4, x++=101, y=1] [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=6, x++=101, y=1] [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=8, x++=101, y=1] [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=10, x++=101, y=1] [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=12, x++=101, y=1] [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=14, x++=101, y=1] [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=16, x++=101, y=1] [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=18, x++=101, y=1] [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=20, x++=101, y=1] [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=22, x++=101, y=1] [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=24, x++=101, y=1] [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=26, x++=101, y=1] [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=28, x++=101, y=1] [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=30, x++=101, y=1] [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=32, x++=101, y=1] [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=34, x++=101, y=1] [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=36, x++=101, y=1] [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=38, x++=101, y=1] [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=40, x++=101, y=1] [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=42, x++=101, y=1] [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=44, x++=101, y=1] [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=46, x++=101, y=1] [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=48, x++=101, y=1] [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=50, x++=101, y=1] [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=52, x++=101, y=1] [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=54, x++=101, y=1] [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=56, x++=101, y=1] [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=58, x++=101, y=1] [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=60, x++=101, y=1] [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=62, x++=101, y=1] [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=64, x++=101, y=1] [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=66, x++=101, y=1] [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=68, x++=101, y=1] [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=70, x++=101, y=1] [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=72, x++=101, y=1] [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=74, x++=101, y=1] [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=76, x++=101, y=1] [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=78, x++=101, y=1] [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=80, x++=101, y=1] [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=82, x++=101, y=1] [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=84, x++=101, y=1] [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=86, x++=101, y=1] [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=88, x++=101, y=1] [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=90, x++=101, y=1] [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=92, x++=101, y=1] [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=94, x++=101, y=1] [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=96, x++=101, y=1] [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=98, x++=101, y=1] [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=100, x++=101, y=1] [L17] COND FALSE !(x < 99) [L25] CALL __VERIFIER_assert((x % 2) == (y % 2)) [L7] COND TRUE !(cond) VAL [cond=0, unknown-#in~cond-unknown=0] [L8] reach_error() VAL [cond=0, unknown-#in~cond-unknown=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 605.2s, OverallIterations: 7, TraceHistogramMax: 50, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 537.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 6 SdHoareTripleChecker+Valid, 11.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6 mSDsluCounter, 205 SdHoareTripleChecker+Invalid, 11.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 192 mSDsCounter, 266 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3202 IncrementalHoareTripleChecker+Invalid, 3468 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 266 mSolverCounterUnsat, 13 mSDtfsCounter, 3202 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 435 GetRequests, 118 SyntacticMatches, 78 SemanticMatches, 239 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2131 ImplicationChecksByTransitivity, 567.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=55occurred in iteration=6, InterpolantAutomatonStates: 147, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 2.8s SatisfiabilityAnalysisTime, 58.2s InterpolantComputationTime, 264 NumberOfCodeBlocks, 264 NumberOfCodeBlocksAsserted, 38 NumberOfCheckSat, 297 ConstructedInterpolants, 0 QuantifiedInterpolants, 13245 SizeOfPredicates, 25 NumberOfNonLiveVariables, 341 ConjunctsInSsa, 104 ConjunctsInUnsatCore, 16 InterpolantComputations, 1 PerfectInterpolantSequences, 0/4200 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-11-23 15:26:54,919 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8d575c-5a30-4f9b-9642-f43bb48e5fb0/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE